IONOSPHERIC ABSORPTION OF HF RADIO WAVE IN VERTICAL PROPAGATION *

Size: px
Start display at page:

Download "IONOSPHERIC ABSORPTION OF HF RADIO WAVE IN VERTICAL PROPAGATION *"

Transcription

1 Iranian Journal of Scinc & Tchnology, Transaction A, Vol. 3, No. A4 Printd in Th Islamic Rpublic of Iran, 7 Shira Univrsity IONOSPHERIC ABSORPTION OF HF RADIO WAVE IN VERTICAL PROPAGATION * I. UNAL **, O. OZCAN AND. CANYILAZ Dpartmnt of Scinc Taching, Faculty of Education, Inonu Univ., 448 alatya, Turky Dpartmnt of Physics, Faculty of Scinc and Arts, Firat Univ., 369 Elaig, Turky s: iunal@inonu.du.tr, oocan@firat.du.tr, mcanyilma@firat.du.tr Abstract In this study, absorption of high frquncy radio wavs in th ionosphric plasma hav bn invstigatd. Th wav quation was obtaind in trms of ionosphric paramtrs. Th numrical valus of th absorption hav bn calculatd for 4 H, 4.5 H and 5 H wavs. Th ncssary paramtrs for calculation hav bn obtaind using an Intrnational Rfrnc Ionosphr (IRI) odl. Th altitudinal, diurnal, sasonal and th variations of absorption with frquncy hav bn xamind. Th calculations show that th highst absorption occurs in th D-rgion. Th absorption is highr in summr than in othr sasons and is maximum at daylight. In addition, absorption dcrass with th incras of frquncy. Kywords Ionosphr, HF wav, absorption. INTRODUCTION Ionosphr is vry important for radio communication. 3-3 H frquncis ar calld high frquncis (HF) and ths frquncis ar th biggst frquncis that ar rflctd from th ionosphr. Th most usful way to prform systmatic masurmnts in th ionosphr is to us HF wavs. Th thory of HF radio wavs in th ionosphric plasma startd with th formulations of th Applton-Lassn disprsion rlation in th lat 9s and bcam mor important in th scond half of th th cntury []. Th us of HF radio spctrum continus to grow for both civil and military purposs, dspit th widsprad introduction of satllit-basd communication systms. In particular, th HF band is vry important whn th communication systm is dstroyd by an unusual vnt, such as a major arthquak. For this rason, it is important to invstigat and undrstand th HF propagation charactristic in th ionosphr. Radio wavs show diffrnt bhaviors dpnding on thir frquncis, oscillation frquncy of th lctron and th rfractiv indx of th ionosphric plasma. Du to ths bhaviors th wav rflcts, rfracts or is absorbd by th ionosphr. Radio wavs in th ionosphr ar subjct to som attnuation bcaus th motions of th lctrons and ions ar dampd through collisions with othr particls [-7]. Th purpos of this study is to invstigat th absorption of th HF lctromagntic wav, which propagats vrtical in th ionosphr as a function of hight and ionosphric paramtrs. Th rfractiv indx of th ionosphr will b obtaind by solving th conductivity quation and disprsion rlation. Th variations in th absorption will b invstigatd from th imaginary part of th rfractiv indx.. ABSORPTION OF THE RADIO WAVES IN THE IONOSPHERIC PLASA A radio wav is givn by, Rcivd by th ditor Sptmbr 6, 5 and in final rvisd form ay, 8 Corrsponding author

2 44 I. Unal / t al. E = E i( k r t ) () whr is th angular frquncy and k wav vctor and can b writtn as follows: k = n () c Whr n is th rfractiv indx and c is th spd of light in th fr spac. Th rfractiv indx of th ionosphric plasma is givn by [], n = μ + iχ (3) μ is th ral part of th rfractiv indx and affcts th phas vlocity. χ is th complx part and dtrmins th attnuation of th wav [8]. Using Eq. () and Eq. (3), Eq. () is obtaind as, i μr t χr c E = E c (4) Th χ trm is calld th κ absorption cofficint and this xprssion shows that th radio wav is c χr attnuatd by th trm of c and movs by th vlocity of c μ. For th calculation of th absorption, th rfractiv indx of th ionosphric plasma must b known... Rfractiv indx for ionosphric plasma At high frquncy, th ffct of ions can b nglctd [9]. If w tak th ambint magntic fild B in th vrtical dirction, th conductivity tnsor can b obtaind as follows [], σ σ = σ σ σ σ (5) in which longitudinal ( σ ), Pdrsn ( σ ) and Hall ( ) p ( ν i) ( ν i) σ conductivitis ar, σ ε p =, ( ν i) ε εpc σ = and σ = rspctivly. ε [ c + ] [ c + ( ν i) ] is th dilctric cofficint of th fr B spac, = N c is lctron gyro-frquncy, and p = is th plasma oscillation frquncy m mε whr is lctron charg, m is lctron mass and N is lctron dnsity. 3 ν = νi n in which T / νi = N log x T and ν n = 5.4 NnT ar N th lctron-ion and th lctron-nutral collision frquncis, rspctivly []. If w solv th axwll curl Equations B E = (6) t Iranian Journal of Scinc & Tchnology, Trans. A, Volum 3, Numbr A4 Autumn 7

3 Ionosphric absorption of HF radio wav in vrtical propagation 45 by using th currnt dnsity [ J] [ σ] [ E] E B = μj + με (7) t =, th following Equation can b obtaind. E - n( n E) iσ n = I + E (8) ε in which I is unit matrix and σ is givn in Eq. (5). From Eq. (8) w can obtain, xx yx x xy yy y x E x y E y = E (9) Whr xx x = = yy y = n = iσ, ε x = y = xy = yx iσ =, ε iσ =, ε () Dt()= is th basic disprsion rlation. Th rfractiv indx n can b obtaind in trms of plasma paramtrs. From this dtrminant, th following Equation can b obtaind. Eq. () givs th following two roots of n. Whr Autumn 7 iσ iσ σ iσ σ n n + = () ε ε ε ε ε ( )( ) ( ) c c ν c + 4 ν ( )( ) ( ) + c c ν c + 4 ν n = A + ib () n = C + id (3) p A = + p, ν + ν + ν B = c c c + 4 ν ( ) ( ) ( ) p C = + p, ν + + ν + ν D = c c c + 4 ν ( ) ( ) ( ) On of thm is th lft-hand polarid wav (Eq. ()) and th othr is th right-hand polarid wav (Eq. (3))... Wav absorbing xprssion Th Eq. () and Eq. (3) show that th rfractiv indx n = ( μ + iχ) = lctron collisions ar allowd. Thn, th imaginary part (χ) of n is, Iranian Journal of Scinc & Tchnology, Trans. A, Volum 3, Numbr A4 A+iB bcoms complx if

4 46 I. Unal / t al. χ, ( A + B ) ± A = (4) If w us this xprssion of χ in Eq. (4), th wav Equation for th vrtical propagation is obtaind as follows, E = E i μ t c ± c ( A B ) + A (5) 3. NUERICAL ANALYSIS AND DISCUSSION According to th Eq. (5) total absorption for th vrtical propagation can b dfind as: Total rfl. ( A B ) + A ± ( A + B ) Absorption = d + d (6) ± c rfl. c A in which (8 km) is takn for th bginning of th ionosphr, and rfl. (n=) is th rflction hight (Fig. ). Fig.. Schmatic illustration of th vrtical HF radio wavs propagating through ionosphric plasma Th calculations of this Equation hav bn don for + sign at gographic coordinats of (38 O 4' E v 39 O 4' N). In addition, th calculations hav bn don for quit-solar activity days (th sunspot numbr is about ). Th amplitud of th wav is takn as V/m at. Calculations hav bn don for vry km from to rfl. W assumd that th wav rflctd at hight whr c p. Th usd ionosphric plasma paramtrs hav bn calculatd by using Intrnational Rfrnc Ionosphr (IRI) with th Intrnational Radio Consultativ Committ (CCIR) odl. Th calculations hav bn don for Jun, 3 Sptmbr and Dcmbr. Iranian Journal of Scinc & Tchnology, Trans. A, Volum 3, Numbr A4 Autumn 7

5 Ionosphric absorption of HF radio wav in vrtical propagation 47 Th variations of th amplitud with hight for 5 H is shown in Fig.. As is sn from th Figur, th maximum absorption occurs in th ionosphric D and E-rgion. In th F v F rgion wav absorption is smallr than th D and E-rgion. This is an accptd rsult, as th nutral dnsity is biggr than th lctron dnsity at low altituds during daytim (Tabl ). So, th total absorption bcoms maximum as lctron collision frquncy incrass [-4]. Amplitud (V/m) Amplitud (V/m) Altitud (km) Altitud (km) (a) (b) Fig.. Th variation of th amplitud attnuation with hight for 5 H. ( Dcmbr at. LT, a: Up to rflction point, b: Thn th rflction) h (km) Tabl. Th variations of th nutral and lctron dnsitis, lctron collision frquncy and absorption cofficint with hight ( Dcmbr at. LT) N n (par./m 3 ) N (l./m 3 ) ν (s - ) κ (m - ) 8 5.8E+ 3.8E+8 5.9E E E+ 7.66E+8.77E E E+9 8.3E+9 7.6E+5.E E E+.88E+5 3.6E-5.6E E+.9E+5 3.5E E E+ 4.85E+4.83E-5.E E+.9E E-6 5.E+8 9.8E+.9E+4 4.E E E+ 6.E+3.3E E E+ 4.5E+3.56E-6 3.3E+7.E+.86E+3.6E E+7.3E+.3E E E+6.6E+.66E+3 7.6E E+6.9E+.34E E E+6.3E+.E+3 5.5E E+6.7E+ 9.34E+ 4.56E E+6.3E+ 8.5E+ 4.6E E+6.3E+ 7.7E+ 3.95E E+6.57E+ 6.54E+ 4.65E E+6.99E+ 6.8E+ 6.3E E+6.44E+ 6.9E+ 8.57E E+6.87E+ 5.9E+.8E-6 9.8E+6 3.7E+ 5.73E+.7E-6 95.E+6 3.6E+ 5.53E+.96E E+5 3.9E+ 5.3E+ --- Th diurnal and sasonal variations of th amplitud for thr diffrnt frquncis (4 H, 4.5 H, 5 H) ar givn in Fig. 3. Somtims ths frquncis pass through th ionosphr. As sn in th Figurs, th 5 H wav dos not rflct at night bcaus th critical frquncy at h m F (f F) is Autumn 7 Iranian Journal of Scinc & Tchnology, Trans. A, Volum 3, Numbr A4

6 48 I. Unal / t al. approximatly 5 H. Th total absorption has bn dcrasing with th frquncy incras, much gratr in summr than wintr. Similar rsults hav bn obtaind by Singr t al. [5]. Th diurnal variation of total absorption is rlatd to th variation of th lctron dnsity which is givn in Fig. 4. As is sn, for Dcmbr, lctron dnsity is lss than Jun and 3 Sptmbr. Howvr, th wav amplitud at Dcmbr is highr than th othr sasons. So, whn th lctron dnsity is at maximum, th total absorption has bn incrasing. Incrmnts in th absorption during th daytim is also rlatd to th incras of th lctron tmpratur [6]. Howvr, according to th IRI odl, th sasonal lctron tmpratur variations ar vry small, so th sasonal variations of absorption mainly dpnd on th lctron dnsity variations. Ths rsults ar abl to guid usrs for xprimntal studis, spcially ionosphr propping tchnology such as ionosonda HF frquncy..8 (a) Amplitud (V/m) H 4.5 H 5 H Local Tim (hour) Amplitud (V/m) H 4.5 H 5 H (b) Local Tim (hour).5 Amplitud (V/m) H 4.5 H 5 H (c) Local Tim (hour) Fig. 3. Th diurnal variations of th total absorption during th wav path (a: Jun, b: 3 Sptmbr, c: Dcmbr) Iranian Journal of Scinc & Tchnology, Trans. A, Volum 3, Numbr A4 Autumn 7

7 Ionosphric absorption of HF radio wav in vrtical propagation 49 Elctron Dnsity (l/m 3 ) 5.E+ 4.5E+ 4.E+ 3.5E+ 3.E+.5E+.E+.5E+.E+ 5.E+ Jun 3 Sptmbr Dcmbr Local Tim (hour) Fig. 4. Th diurnal and sasonal variations of th lctron dnsity at h m F REFERENCES. Suchy, K. (). Thory of high-frquncy (HF) radio wavs in th scond half of th th cntury. J. of Atmos. and Solar-Trr. Phys. 6, Ratcliff, J. A. (959). Th magnto-ionic thory and its applications to th ionosphr. Cambridg Univrsity Prss. 3. Buddn, K. G. (985). Th propagation of radio wavs. Cambridg Univrsity Prss. 4. Oyinloy, J. O. (988). Equatorial HF radio wav absorption masurmnts and th IRI. J. of Atmos. and Trr. Phys. 5, Lastovicka, J., Boska, J. & Bursova, D. (993). Digital masurmnts of LF radio wav absorption in th lowr ionosphr and infrrd gravity wav activity. Annals Gophysica., Blova, E. G., Pashin, A. B. & Lyatsky, W. B. (995). Passag of a powrful HF radio wav through th lowr ionosphr as a function of initial lctron dnsity profils. J. of Atmos. and Trr. Phys. 37, ishin, E. V. & Atamaniuk, B. (995). Radio wav turbulnt absorption du to lctron bam injction in th ionosphr. J. of Atmos. and Trr. Phys. 57, organ, A. D. (969). agnto-ionic ffcts in polarisation and absorption. AGARD Confrnc Procdings (3-5). England: Tchnivision Srvics Slough. 9. İnan, U. S. & İnan, A. S. (). Elctromagntic wavs. USA: Prntic Hall Inc.. Aydoğdu,. & Öcan, O. (996). Effct of magntic dclination on rfractiv indx and wav polariation cofficints of lctromagntic wavs in mid-latitud ionosphr. Indian J. of Radio & Spac Phys. 5, Rishbth, H. & Garriott, O. K. (969). Introduction to ionosphric physics. Acadmic Prss.. Fjr, J. A. (955). Th intraction of pulsd radio wavs in th ionosphr. J. of Atmos. and Trr. Phys. 7, Kopka, H. & öllr, H. G. (969). Calculation of th fild strngth of a radio transmission for givn lctron dnsity and collision frquncy profils. AGARD Confrnc Procdings (9-8). England: Tchnivision Srvics Slough. 4. Frguson, B. G. & cnamara, L. F. (986). Calculation of HF absorption using th Intrnational Rfrnc Ionosphr. J. of Atmos. and Trr. Phys. 48(), Singr, W., Taubnhim, J. & Brmr, J. (98). A tst of IRI lowr ionosphr modls by comparison with radio propagation data. J. of Atmos. and Trr. Phys. 4, Nishino,., Yamagishi, H., Stauning, P., Rosnbrg, T. J. & Holtt, J. A. (997). Location, spatial scal and motion of radio wav absorption in th cusp-latitud ionosphr obsrvd by imaging riomtrs. J. of Atmos. and Solar-Trr. Phys. 59(8), Autumn 7 Iranian Journal of Scinc & Tchnology, Trans. A, Volum 3, Numbr A4

Low Cross-Polarization Slab Waveguide Filter for Narrow-Wall Slotted Waveguide Array Antenna with High Gain Horn

Low Cross-Polarization Slab Waveguide Filter for Narrow-Wall Slotted Waveguide Array Antenna with High Gain Horn Intrnational Confrnc on Mchatronics Enginring and Information Tchnology (ICMEIT 2016) Low Cross-Polarization Slab Wavguid Filtr for Narrow-Wall Slottd Wavguid Array Antnna with High Gain Horn Guoan Xionga,

More information

Theory and Proposed Method for Determining Large Signal Return Loss or Hot S22 for Power Amplifiers Using Phase Information

Theory and Proposed Method for Determining Large Signal Return Loss or Hot S22 for Power Amplifiers Using Phase Information Thory and Proposd Mthod for Dtrmining arg Signal Rturn oss or Hot S for Powr Amplifirs Using Phas Information Patrick Narain and Chandra Mohan (Skyworks Solutions, Inc.) Introduction: Powr amplifirs (s)

More information

Introduction to Medical Imaging. Signal Processing Basics. Strange Effects. Ever tried to reduce the size of an image and you got this?

Introduction to Medical Imaging. Signal Processing Basics. Strange Effects. Ever tried to reduce the size of an image and you got this? Strang Effcts Introduction to Mdical Imaging Evr trid to rduc th siz of an imag and you got this? Signal Procssing Basics Klaus Mullr Computr Scinc Dpartmnt Stony Brook Univrsity W call this ffct aliasing

More information

RECOMMENDATION ITU-R M.1828

RECOMMENDATION ITU-R M.1828 Rc. ITU-R M.188 1 RECOMMENDATION ITU-R M.188 Tchnical and oprational rquirmnts for aircraft stations of aronautical mobil srvic limitd to transmissions of tlmtry for flight tsting in th bands around 5

More information

CH 7. Synchronization Techniques for OFDM Systems

CH 7. Synchronization Techniques for OFDM Systems CH 7. Synchronization Tchnius for OFDM Systms 1 Contnts [1] Introduction Snsitivity to Phas Nois Snsitivity to Fruncy Offst Snsitivity to Timing Error Synchronization Using th Cyclic Extnsion l Tim synchronization

More information

4.5 COLLEGE ALGEBRA 11/5/2015. Property of Logarithms. Solution. If x > 0, y > 0, a > 0, and a 1, then. x = y if and only if log a x = log a y.

4.5 COLLEGE ALGEBRA 11/5/2015. Property of Logarithms. Solution. If x > 0, y > 0, a > 0, and a 1, then. x = y if and only if log a x = log a y. /5/05 0 TH EDITION COLLEGE ALGEBRA 4.5 Eponntial and Logarithmic Equations Eponntial Equations Logarithmic Equations Applications and Modling LIAL HORNSBY SCHNEIDER 4.5-4.5 - Proprty of Logarithms If >

More information

90 and 180 Phase Shifter Using an Arbitrary Phase-Difference Coupled-line Structure

90 and 180 Phase Shifter Using an Arbitrary Phase-Difference Coupled-line Structure This articl has bn accptd and publishd on J-STAGE in advanc of copyditing. Contnt is final as prsntd. IEICE Elctronics Exprss, Vol.* No.*,*-* 90 and 80 Phas Shiftr Using an Arbitrary Phas-Diffrnc Coupld-lin

More information

Lab 12. Speed Control of a D.C. motor. Controller Design

Lab 12. Speed Control of a D.C. motor. Controller Design Lab. Spd Control of a D.C. motor Controllr Dsign Motor Spd Control Projct. Gnrat PWM wavform. Amplify th wavform to driv th motor 3. Masur motor spd 4. Masur motor paramtrs 5. Control spd with a PD controllr

More information

3G Evolution. OFDM Transmission. Outline. Chapter: Subcarriers in Time Domain. Outline

3G Evolution. OFDM Transmission. Outline. Chapter: Subcarriers in Time Domain. Outline Chaptr: 3G Evolution 4 OFDM Transmission Dpartmnt of Elctrical and Information Tchnology Johan Löfgrn 2009-03-19 3G Evolution - HSPA and LTE for Mobil Broadband 1 2009-03-19 3G Evolution - HSPA and LTE

More information

Conducted EMI of Switching Frequency Modulated Boost Converter

Conducted EMI of Switching Frequency Modulated Boost Converter doi: 1.7/cc-13-9 13 / 3 Conductd of Switching Frquncy Modulatd Boost Convrtr Dniss Stpins (Rsarchr, Riga Tchnical Univrsity) Abstract In this papr conductd lctromagntic intrfrnc () of boost convrtr with

More information

η = ; (3) QUANTITATIVE INTERPRETATION OF PRECIPITATION RADAR 7R.3 MEASUREMENTS AT VHF BAND Edwin F. Campos 1*, Frédéric Fabry 1, and Wayne Hocking 2

η = ; (3) QUANTITATIVE INTERPRETATION OF PRECIPITATION RADAR 7R.3 MEASUREMENTS AT VHF BAND Edwin F. Campos 1*, Frédéric Fabry 1, and Wayne Hocking 2 7R.3 QUANTITATIVE INTERPRETATION OF PRECIPITATION RADAR MEASUREMENTS AT VHF BAND Edwin F. Campos 1*, Frédéric Fabry 1, and Wayn Hocking 1 Dpartmnt of Atmosphric and Ocanic Scincs, McGill Univrsity, Montral,

More information

ANALYSIS ON THE COVERAGE CHARACTERISTICS OF GLONASS CONSTELLATION

ANALYSIS ON THE COVERAGE CHARACTERISTICS OF GLONASS CONSTELLATION ANALYSIS ON THE COVERAGE CHARACTERISTICS OF GLONASS CONSTELLATION Itm Typ txt; rocdings Authors Hui, Liu; Qishan, Zhang ublishr Intrnational Foundation for Tlmtring Journal Intrnational Tlmtring Confrnc

More information

DETERMINATION OF ELECTRONIC DISTANCE MEASUREMENT ZERO ERROR USING KALMAN FILTER

DETERMINATION OF ELECTRONIC DISTANCE MEASUREMENT ZERO ERROR USING KALMAN FILTER Europan Scintific Journal Sptmbr 24 dition vol., No.27 ISSN: 87 788 (rint) - ISSN 87-743 DETERMINATION OF ELECTRONIC DISTANCE MEASUREMENT ZERO ERROR USING KALMAN FILTER Onuwa Owuashi, hd Dpartmnt of Goinformatics

More information

1.1 Transmission line basic concepts: Introduction to narrow-band matching networks

1.1 Transmission line basic concepts: Introduction to narrow-band matching networks . Transmission lin basic concpts: ntroduction to narrow-band matching ntworks March Francsc Torrs, luís Pradll, Jorg Miranda oltag and currnt in th transmission lin For any losslss transmission lin: whr

More information

REFLECTION AND TRANSMISSION IN THE IONOSPHERE CONSIDERING COLLISIONS IN A FIRST APPROXIMATION

REFLECTION AND TRANSMISSION IN THE IONOSPHERE CONSIDERING COLLISIONS IN A FIRST APPROXIMATION Progress In Electromagnetics Research Letters, Vol. 1, 93 99, 2008 REFLECTION AND TRANSMISSION IN THE IONOSPHERE CONSIDERING COLLISIONS IN A FIRST APPROXIMATION A. Yesil and M. Aydoğdu Department of Physics

More information

Efficiency Optimized Brushless DC Motor Drive based on Input Current Harmonic Elimination

Efficiency Optimized Brushless DC Motor Drive based on Input Current Harmonic Elimination Intrnational Journal of Powr Elctronics and Driv Systm (IJPEDS) Vol. 6, No. 4, Dcmbr 2015, pp. 869~875 ISSN: 2088-8694 869 Efficincy Optimizd Brushlss DC Motor Driv basd on Input Currnt Harmonic Elimination

More information

Narrow-wall slotted waveguide array antenna with low cross-polarization filter

Narrow-wall slotted waveguide array antenna with low cross-polarization filter 6th Intrnational Confrnc on Machinr, Matrials, Environmnt, Biotchnolog and Computr (MMEBC 06) Narrow-wall slottd wavguid arra antnna with low cross-polarization filtr Guoan Xiong, a, Jin Pan, b and Bouan

More information

Engineering 1620: High Frequency Effects in BJT Circuits an Introduction Especially for the Friday before Spring Break

Engineering 1620: High Frequency Effects in BJT Circuits an Introduction Especially for the Friday before Spring Break Enginring 162: High Frquncy Efcts in BJT ircuits an Introduction Espcially for th Friday bfor Spring Brak I hav prpard ths nots bcaus on th day bfor a major vacation brak som popl find it ncssary to lav

More information

On parameters determination of multi-port equivalent scheme for multi-winding traction transformers

On parameters determination of multi-port equivalent scheme for multi-winding traction transformers ARCHIVES OF EECRICA ENGINEERING VO. 6(), pp. 7-7 (5) DOI.55/a-5- On paramtrs dtrmination of multi-port quivalnt schm for multi-winding traction transformrs ADEUSZ J. SOBCZYK, JOSEPH E HAYEK Cracow Univrsity

More information

Investigation of Power Factor Behavior in AC Railway System Based on Special Traction Transformers

Investigation of Power Factor Behavior in AC Railway System Based on Special Traction Transformers J. Elctromagntic Analysis & Applications, 00,, ** doi:0.436/jmaa.00.08 Publishd Onlin Novmbr 00 (http://www.scirp.org/journal/jmaa) Invstigation of Powr Factor Bhavior in AC Railway Systm Basd on Spcial

More information

Impact Analysis of Damping Resistors in Damped Type Double Tuned Filter on Network Harmonic Impedance

Impact Analysis of Damping Resistors in Damped Type Double Tuned Filter on Network Harmonic Impedance pact Analysis of Damping Rsistors in Dampd Typ Doubl Tund Filtr on Ntwork Harmonic pd R.Madhusudhana Rao Assistant Profssor, Elctrical and Elctronics Dpartmnt V R Siddhartha Enginring Collg, Vijayawada,

More information

Linearization of Two-way Doherty Amplifier by Using Second and Fourth Order Nonlinear Signals

Linearization of Two-way Doherty Amplifier by Using Second and Fourth Order Nonlinear Signals 3 Linarization of Two-way Dohrty Amplifir by Using Scond and Fourth Ordr Nonlinar Signals Alksandar Atanasković and Nataša Malš-Ilić Abstract In this papr, a two-way Dohrty amplifir with th additional

More information

1/24/2017. Electrical resistance

1/24/2017. Electrical resistance 1/24/2017 Photocopirs and th National Grid Photoconductors so far.. On xampl of a smiconducting matrial Elctrical insulator in th dark, conductor in th light mportant componnt in a photocopir butt Slctiv

More information

cos The points in an Argand diagram which represent the numbers (iii) Write down a polynomial equation of degree 5 which is satisfied by w.

cos The points in an Argand diagram which represent the numbers (iii) Write down a polynomial equation of degree 5 which is satisfied by w. FP3 Complx Numbrs. Jun qu.3 In this qustion, w dnots th complx numbr cos + i sin. 5 5 Exprss w, w 3 and w* in polar form, with argumnts in th intrval θ

More information

Signals and Systems Fourier Series Representation of Periodic Signals

Signals and Systems Fourier Series Representation of Periodic Signals Signals and Systms Fourir Sris Rprsntation of Priodic Signals Chang-Su Kim Introduction Why do W Nd Fourir Analysis? Th ssnc of Fourir analysis is to rprsnt a signal in trms of complx xponntials x t a

More information

Introduction to Digital Signal Processing

Introduction to Digital Signal Processing Chaptr Introduction to. Introduction.. Signal and Signal Procssing A signal is dfind as any physical quantity which varis with on or mor indpndnt variabls lik tim, spac. Mathmatically it can b rprsntd

More information

Recent Progress on VLF Wave and Its Interactions with Energetic Particles in the Magnetosphere

Recent Progress on VLF Wave and Its Interactions with Energetic Particles in the Magnetosphere IOSR Journal of Applid Physics (IOSR-JAP) -ISSN: 78-4861.Volum 9, Issu 3 Vr. III (May - Jun 017), PP 76-81 www.iosrjournals.org Rcnt Progrss on VLF Wav and Its Intractions with Enrgtic Particls in th Magntosphr

More information

Lecture 19: Common Emitter Amplifier with Emitter Degeneration.

Lecture 19: Common Emitter Amplifier with Emitter Degeneration. Whits, EE 320 Lctur 19 Pag 1 of 10 Lctur 19: Common Emittr Amplifir with Emittr Dgnration. W ll continu our discussion of th basic typs of BJT smallnal amplifirs by studying a variant of th CE amplifir

More information

Characteristics of BJT-2

Characteristics of BJT-2 PLEASE S HP://ENGNEERS.N/ ENGNEERS- ONSULANS LEURE NOES SERES ELERONS ENGNEERNG 1 YEAR UPU haractristics of J-2 Output haractristics for ommon Emittr configuration: h output charactristic for transistor

More information

Square VLF Loop Antenna, 1.2 m Diagonal ~ Mechanical and Electrical Characteristics and Construction Details ~ Whitham D. Reeve

Square VLF Loop Antenna, 1.2 m Diagonal ~ Mechanical and Electrical Characteristics and Construction Details ~ Whitham D. Reeve Squar VLF Loop Antnna, 1. m Diagonal ~ Mchanical and Elctrical Charactristics and Construction Dtails ~ Whitham D. Rv 1. Dimnsions Th loop antnna dscribd hr has a squar shap with a diagonal lngth of 1.07

More information

Common Collector & Common Base Amplifier Circuits

Common Collector & Common Base Amplifier Circuits xprimnt (6): ommon ollctor & as Amplification ircuit xprimnt No. (6) ommon ollctor & ommon as Amplifir ircuits Study Objctiv: (1) To comput and masur th basic charactristics of & amplification. (2) To

More information

A SIMULATION MODEL FOR LIGHT RAIL TRANSPORTATION SYSTEM

A SIMULATION MODEL FOR LIGHT RAIL TRANSPORTATION SYSTEM A SIMULATION MODEL FOR LIGHT RAIL TRANSPORTATION SYSTEM Filiz Dumbk (a), Dilay Clbi (b) (a)(b) Dpartmnt of Managmnt Enginring, Istanbul Tchnical Univrsity, Macka 7, Istanbul, Turky (a) dumbk@itu.du.tr,

More information

Performance Analysis of BLDC Motor for Sinusoidal and Trapezoidal Back-Emf using MATLAB/SIMULINK Environment

Performance Analysis of BLDC Motor for Sinusoidal and Trapezoidal Back-Emf using MATLAB/SIMULINK Environment Prformanc Analysis of BLDC Motor for Sinusoidal and Trapzoidal Back-Emf using MATLAB/SIMULINK Environmnt Pramod Pal Dpartmnt of Elctrical Enginring Maulana AzadNational Institut of Tchnology Bhopal, India

More information

The Trouton Rankine Experiment and the End of the FitzGerald Contraction

The Trouton Rankine Experiment and the End of the FitzGerald Contraction Th Trouton Rankin Exprimnt and th End of th FitzGrald Contraction Dr. Adrian Sfarti 1. Abstract Assuming that FitzGrald was right in his contraction hypothsis, Trouton sought for mor positiv vidnc of its

More information

NMR Part IV, Apodization and Zero Filling

NMR Part IV, Apodization and Zero Filling NMR Part IV, Apodization and Zro Filling This worksht is an introduction to how apodization and zro filling nhanc S/N and rsolution It is intractiv, so you can chang th variabls and s how thy ffct th signal

More information

Dynamic Walking of Biped Robots with Obstacles Using Predictive Controller

Dynamic Walking of Biped Robots with Obstacles Using Predictive Controller ICCKE011, Intrnational Confrnc on Computr and Knowldg Enginring Oct 13-14, 011, Frdowsi Univrsity of Mashhad, Mashhad, Iran Dynamic Walking of Bipd Robots with Obstacls Using Prdictiv Controllr Nasrin

More information

EECE 301 Signals & Systems Prof. Mark Fowler

EECE 301 Signals & Systems Prof. Mark Fowler EECE 301 Signals & Systms Prof. Mark Fowlr ot St #25 D-T Signals: Rlation btwn DFT, DTFT, & CTFT Rading Assignmnt: Sctions 4.2.4 & 4.3 of Kamn and Hck 1/22 Cours Flow Diagram Th arrows hr show concptual

More information

Determination of Antenna Q from the Reflection-Coefficient Data

Determination of Antenna Q from the Reflection-Coefficient Data Antnna Dsignr s Notbook Foundd by Hal Shrank Tom Milligan 84 W Polk Pl Littlton CO 8 USA Tl: + () 97-949 E-mail: tmilligan@i.org http//www.antnnadsignr.org Dtrmination of Antnna Q from th Rflction-Cofficint

More information

ESX10-10x-DC24V-16A-E electronic circuit protector

ESX10-10x-DC24V-16A-E electronic circuit protector Dscription Th plug-in typ ESX10 lctronic circuit protctor slctivly disconncts DC 2 V load circuits by rsponding fastr than th switch mod powr supply to ovrload conditions. Th manual ON/ OFF switch on th

More information

SPX mA Low Drop Out Voltage Regulator with Shutdown FEATURES Output 3.3V, 5.0V, at 400mA Output Very Low Quiescent Current Low Dropout Voltage

SPX mA Low Drop Out Voltage Regulator with Shutdown FEATURES Output 3.3V, 5.0V, at 400mA Output Very Low Quiescent Current Low Dropout Voltage 400mA Low Drop Out Voltag Rgulator with Shutdown FEATURES Output 3.3V, 5.0V, at 400mA Output Vry Low Quiscnt Currnt Low Dropout Voltag Extrmly Tight Load and Lin Rgulation Vry Low Tmpratur Cofficint Currnt

More information

16 th Coherent Laser Radar Conference (June 20, 2011, Long Beach CA, USA)

16 th Coherent Laser Radar Conference (June 20, 2011, Long Beach CA, USA) Novmbr 3, 11 16 th Cohrnt Lasr adar Confrnc 1/18 16 th Cohrnt Lasr adar Confrnc (Jun, 11, Long Bach CA, USA) Dvlopmnt of Cohrnt -μm Diffrntial Absorption and Wind Lidar with lasr frquncy offst locking

More information

TALLINN UNIVERSITY OF TECHNOLOGY. IRO0140 Advanced Space Time-Frequency Signal Processing. Individual Work

TALLINN UNIVERSITY OF TECHNOLOGY. IRO0140 Advanced Space Time-Frequency Signal Processing. Individual Work TALLINN UNIVERSITY OF TECHNOLOGY IRO14 Advancd Spac Tim-Frquncy Signal Procssing Individual Work Toomas Ruubn Tallinn 1 Thory about sprad spctrum scanning signals: W will start our practical work with

More information

Rotor Speed Control of Micro Hydro Synchronous Generator Using Fuzzy PID Controller

Rotor Speed Control of Micro Hydro Synchronous Generator Using Fuzzy PID Controller Procdings of th 2nd Sminar on Enginring and Information Tchnology Rotor Spd Control of Micro Hydro Synchronous Gnrator Using Fuzzy PID Controllr C. S. Chin K. T. K. To P. Nlakantan Elctrical and Elctronics

More information

Theoretical and Experimental Estimation of the Stored Energy of Plain Knitted Fabrics Using Yarn Pullout Test

Theoretical and Experimental Estimation of the Stored Energy of Plain Knitted Fabrics Using Yarn Pullout Test Thortical and Exprimntal Estimation of th Stord Enrgy of Plain Knittd abrics Using Yarn Pullout Tst Azita Asaysh Ph.D., Elahh Niazkhani, Ali Asghar Asgharian Jddi, Amirkabir Univrsity of Tchnology, Thran,

More information

Online Publication Date: 15 th Jun, 2012 Publisher: Asian Economic and Social Society. Computer Simulation to Generate Gaussian Pulses for UWB Systems

Online Publication Date: 15 th Jun, 2012 Publisher: Asian Economic and Social Society. Computer Simulation to Generate Gaussian Pulses for UWB Systems Onlin Publication Dat: 15 th Jun, 01 Publishr: Asian Economic and Social Socity Computr Simulation to Gnrat Gaussian Pulss for UWB Systms Ibrahim A. Murdas (Elctrical Dpartmnt, Univrsity of Babylon, Hilla,Iraq)

More information

CATTLE FINISHING RETURN

CATTLE FINISHING RETURN CATTLE FINISHING RETURN S E R I E S Novmbr 2011 CATTLE FINISHING NET RETURNS This articl discusss rcnt trnds in fding cost of gain and cattl finishing profitability. Svral sourcs of data wr usd to comput

More information

CALCULATION OF A TORQUE RIPPLE A THREE-PHASE ASYNCHRONOUS MOTOR SUPPLIED BY A PWM CONTROLLED INVERTER

CALCULATION OF A TORQUE RIPPLE A THREE-PHASE ASYNCHRONOUS MOTOR SUPPLIED BY A PWM CONTROLLED INVERTER Zszyty Problow Maszyny Eltryczn Nr 2/24 (2) Pavl Zásalicý Tchnical nivrsity of Košic, Slovaia CALCLATION OF A TORQE RIPPLE A THREE-PHASE ASYNCHRONOS MOTOR SPPLIED BY A PWM CONTROLLED INVERTER METODA OBLICZEŃ

More information

Time of Arrival Estimation for WLAN Indoor Positioning Systems using Matrix Pencil Super Resolution Algorithm

Time of Arrival Estimation for WLAN Indoor Positioning Systems using Matrix Pencil Super Resolution Algorithm Tim of Arrival Estimation for WLAN Indoor Positioning Systms using Matrix Pncil Supr Rsolution Algorithm Ali AASSIE ALI 1, and A. S. OMAR 2 FEIT- IESK,Chair of Microwav and Communication Enginring Postfach

More information

Performance Comparison between 6-Port and 5-Port homodyne circuits for DOA Estimation

Performance Comparison between 6-Port and 5-Port homodyne circuits for DOA Estimation Procdings of th 4th WSEAS Int. Confrnc on Elctromagntics, Wirlss and Optical Communications, Vnic, Italy, Novmbr 20-22, 2006 85 Prformanc Comparison btwn 6-Port and 5-Port homodyn circuits for DOA Estimation

More information

Robust Sensorless Control of BLDC Motor using Second Derivative Function of the Sum of Terminal Voltages

Robust Sensorless Control of BLDC Motor using Second Derivative Function of the Sum of Terminal Voltages SERBIAN JOURNAL OF ELECTRICAL ENGINEERING Vol. 1, No., Jun 13, 75-91 UDK: 61.314.1:681.515 DOI: 1.98/SJEE131144B Robust Snsorlss Control of BLDC Motor using Scond Drivativ Function of th Sum of Trminal

More information

On reduction of longest accessibility gap in LEO sun-synchronous satellite missions

On reduction of longest accessibility gap in LEO sun-synchronous satellite missions doi: 1.58/jatm.11.111 Hossin Bonyan Khamsh Shahid Bhshti Univrsity, GC Thran Iran h.bonyan@gmail.com M. Navabi * Shahid Bhshti Univrsity, GC Thran Iran navabi.du @gmail.com *author for corrspondnc On rduction

More information

Enhancing the Performance of Ultra-Tight Integration of GPS/PL/INS: A Federated Filter Approach

Enhancing the Performance of Ultra-Tight Integration of GPS/PL/INS: A Federated Filter Approach Journal of Global Positioning Systms (2006) Vol. 5, No. 1-2:96-104 Enhancing th Prformanc of Ultra-ight Intgration of GPS/PL/INS: A Fdratd Filtr Approach D. Li, J. Wang, S. Babu School of Survying and

More information

GV60 VALORSTAT PLUS OPERATING INSTRUCTIONS. VALORSTAT PLUS GV60 Electronic Ignition Remote Control

GV60 VALORSTAT PLUS OPERATING INSTRUCTIONS. VALORSTAT PLUS GV60 Electronic Ignition Remote Control GV60 VALORSTAT PLUS OPERATING INSTRUCTIONS VALORSTAT PLUS GV60 Elctronic Ignition Rmot Control Valor modls using th ValorStat PLUS Rmot Control Portrait 530I Vogu 1300 Horizon 534I Linar L1 1500 Horizon

More information

Test Results of a Digital Beamforming GPS Receiver in a Jamming Environment Alison Brown and Neil Gerein, NAVSYS Corporation

Test Results of a Digital Beamforming GPS Receiver in a Jamming Environment Alison Brown and Neil Gerein, NAVSYS Corporation Tst Rsults of a Digital Bamforming GPS Rcivr in a Jamming Environmnt Alison Brown and Nil Grin, NAVSYS Corporation BIOGRAPHY Alison Brown is th Prsidnt and CEO of NAVSYS Corporation. Sh has a PhD in Mchanics,

More information

Coexistence between WiMAX and Existing FWA Systems in the Band 3500 MHz

Coexistence between WiMAX and Existing FWA Systems in the Band 3500 MHz Procdings of th Intrnational MultiConfrnc of Enginrs and Computr Scintists 28 Vol II IMECS 28, 19-21 March, 28, Hong Kong Coxistnc btwn WiMAX and Existing FWA Systms in th Band 35 MHz Zaid A. Shamsan,

More information

A Pilot Aided Averaging Channel Estimator for DVB-T2

A Pilot Aided Averaging Channel Estimator for DVB-T2 > mm 13-48 IEEE BMSB 2013 < 1 A Pilot Aidd Avraging Channl Estimator for DVB-T2 Spiridon Zttas, Pavlos I. Lazaridis, Zaharias D. Zaharis, Stylianos Kasampalis, and John Cosmas, Snior Mmbr, IEEE Abstract

More information

Integrated INS/GPS Navigation System

Integrated INS/GPS Navigation System Intrnational Journal on Elctrical Enginring and Informatics - Volum 10, Numbr 3, Sptmbr 2018 Intgratd INS/GPS Navigation Systm Targ Mahmoud and Bambang Riyanto Trilaksono School of Elctrical Enginring

More information

Data Sheet. HSMS-2700, 2702, 270B, 270C High Performance Schottky Diode for Transient Suppression. Features. Description.

Data Sheet. HSMS-2700, 2702, 270B, 270C High Performance Schottky Diode for Transient Suppression. Features. Description. HSMS-2700, 2702, 270B, 270 High Prformanc Schottky iod for Transint Supprssion ata Sht scription Th HSMS-2700 sris of Schottky diods, commonly rfrrd to as clipping /clamping diods, ar optimal for circuit

More information

RClamp2451ZA. Ultra Small RailClamp 1-Line, 24V ESD Protection

RClamp2451ZA. Ultra Small RailClamp 1-Line, 24V ESD Protection - RailClamp Dscription RailClamp TVS diods ar ultra low capacitanc dvics dsignd to protct snsitiv lctronics from damag or latch-up du to ESD, EFT, and EOS. Thy ar dsignd for us on high spd ports in applications

More information

Study of Distribution of Transient Voltages in the Winding of a Transformer Subjected to VFTO and Lightning Surges

Study of Distribution of Transient Voltages in the Winding of a Transformer Subjected to VFTO and Lightning Surges Intrnational Journal of Elctronics Enginring Rsarch. ISSN 0975-6450 Volum 9, Numbr 6 (2017) pp. 867-882 Rsarch India Publications http://www.ripublication.com Study of Distribution of Transint Voltags

More information

Inverter fault Analysis in Permanent Magnet Synchronous Motor using Matlab & Simulink

Inverter fault Analysis in Permanent Magnet Synchronous Motor using Matlab & Simulink Invrtr fault Analysis in Prmannt Magnt Synchronous Motor using Matlab & Simulink 1 Shashank Gupta, 2 Ashish Srivastava, 3 Dr. Anurag Tripathi 1 Sr. Lcturr, MPEC, Kanpur, 2 Sr. Lcturr, MPEC, Kanpur, 3 Associat

More information

PERFORMANCE ANALYSIS OF DIGITAL BEAMFORMING ALGORITHMS

PERFORMANCE ANALYSIS OF DIGITAL BEAMFORMING ALGORITHMS IJRET: Intrnational Journal of Rsarch in Enginring and Tchnology ISSN: 39-63 pissn: 3-738 PERFORMANCE ANALYSIS OF DIGITAL BEAMFORMING ALGORITMS Sushma K M, Manjula Dvi T Digital Communication and Ntworking

More information

Analysis the Performance of Coded WSK-DWDM Transmission System

Analysis the Performance of Coded WSK-DWDM Transmission System Intrnational Journal of Enginring and Tchnology Volum No., Dcmbr, Analysis th rformanc of Codd WSK-DWDM Transmission Systm Bobby Barua Assistant rofssor, Dpartmnt of EEE, Ahsanullah Univrsity of Scinc

More information

Precise Ionosphere Modeling Using Regional GPS Network Data

Precise Ionosphere Modeling Using Regional GPS Network Data Journal of Global Positioning Systs () Vol., No. : 8-4 Prcis Ionosphr odling Using Rgional GPS Ntwor Data Y. Gao and Z.Z. Liu Dpartnt of Goatics Enginring Th Univrsity of Calgary Calgary, Albrta, Canada

More information

EMA5 / UMA5N / FMA5A. V CC -50V -100mA 2.2kW 47kW I C(MAX.) R 1 R 2. Datasheet

EMA5 / UMA5N / FMA5A. V CC -50V -100mA 2.2kW 47kW I C(MAX.) R 1 R 2. Datasheet M5 / UM5N / FM5 PNP -100m -50V Complx Digital Transistors (Bias Rsistor Built-in Transistors) Datasht Faturs Paramtr V CC -50V -100m 2.2kW 47kW I C(MX.) R 1 R 2 1) Built-In Biasing Rsistors. 2) Two DT123J

More information

Logic Design 2013/9/26. Outline. Implementation Technology. Transistor as a Switch. Transistor as a Switch. Transistor as a Switch

Logic Design 2013/9/26. Outline. Implementation Technology. Transistor as a Switch. Transistor as a Switch. Transistor as a Switch 3/9/6 Logic Dsign Implmntation Tchnology Outlin Implmntation o logic gats using transistors Programmabl logic dvics Compl Programmabl Logic Dvics (CPLD) Fild Programmabl Gat Arrays () Dynamic opration

More information

Study on the Problem of VLF Underwater Emission

Study on the Problem of VLF Underwater Emission Intrnationa Cor Journa of Engrg Vo.4 No.4 8 ISSN: 44-895 Study on th Probm of VLF Undrwatr Emission Xichuang n a, Bg Liu b and Ji Cui c Nava Univrsity of Engrg, Bijg 84, Cha. arxcxxx@6.com Abstract Considr

More information

DTA123E series V CC I C(MAX.) R 1 R 2. 50V 100mA 2.2k 2.2k. Datasheet. PNP -100mA -50V Digital Transistors (Bias Resistor Built-in Transistors)

DTA123E series V CC I C(MAX.) R 1 R 2. 50V 100mA 2.2k 2.2k. Datasheet. PNP -100mA -50V Digital Transistors (Bias Resistor Built-in Transistors) DT123 sris PNP -100m -50V Digital Transistors (Bias Rsistor Built-in Transistors) Datasht Paramtr V CC I C(MX.) R 1 R 2 Valu 50V 100m 2.2k 2.2k Faturs 1) Built-In Biasing Rsistors, R 1 = R 2 = 2.2k. Outlin

More information

PAPR REDUCTION TECHNIQUES IN OFDM SYSTEMS USING DCT AND IDCT

PAPR REDUCTION TECHNIQUES IN OFDM SYSTEMS USING DCT AND IDCT PAPR REDUCTIO TECHIQUES I OFDM SYSTEMS USIG DCT AD IDCT 1 S. SUJATHA P. DAAJAYA 1 Rsarch Scholar, Dpartmnt ECE, Pondichrry Enginring Collg, Pondichrry, India Profssor, Dpartmnt of ECE, Pondichrry Enginring

More information

Grid Impedance Estimation for Islanding Detection and Adaptive Control of Converters

Grid Impedance Estimation for Islanding Detection and Adaptive Control of Converters Grid Impdanc Estimation for Islanding Dtction and Adaptiv Control of Convrtrs Abdlhady Ghanm, Mohamd Rashd, Mark Sumnr, M. A. El-says and I. I. I. Mansy Dpartmnt of Elctrical and Elctronics Enginring,

More information

Migração de Empresas. Offices Market Study

Migração de Empresas. Offices Market Study Migração d Emprsas Offics Markt Study LisboN 2017 Migração d Emprsas Lisbon 2017 Aguirr Nwman has conductd th 7th study about companis mobility on th Lisbon offic markt, this tim for th yars and in ordr

More information

Comparison of Conventional Subspace-Based DOA Estimation Algorithms With Those Employing Property-Restoral Techniques: Simulation and Measurements

Comparison of Conventional Subspace-Based DOA Estimation Algorithms With Those Employing Property-Restoral Techniques: Simulation and Measurements 'EEE CUPC' 96, Cambridg, MA, Sptmbr 29 - Octobr 2, 1996 Comparison of Convntional Subspac-Basd DOA Estimation Algorithms With Thos Employing Proprty-Rstoral Tchniqus: Simulation and Masurmnts Rias Muhamd

More information

Frequency Estimation of Unbalanced Three-Phase Power Systems Using the Modified Adaptive Filtering

Frequency Estimation of Unbalanced Three-Phase Power Systems Using the Modified Adaptive Filtering Amrican Journal of Signal Procssing 05, 5(A): 6-5 DOI: 0.593/s.ajsp.0.03 Frquncy Estimation of Unbalancd Thr-Phas Powr Systms Using th Modifid Adaptiv Filtring Amir Rastgarnia,*, Azam Khalili, Vahid Vahidpour,

More information

Available online at ScienceDirect. International Conference On DESIGN AND MANUFACTURING, IConDM 2013

Available online at  ScienceDirect. International Conference On DESIGN AND MANUFACTURING, IConDM 2013 Availabl onlin at www.scincdirct.com ScincDirct Procdia Enginring 64 ( 03 ) 46 55 Intrnational Confrnc On DESIGN AND MANUFACTURING, IConDM 03 Rsourc utilization of multi-hop CDMA wirlss snsor ntworks with

More information

A simple automatic classifier of PSK and FSK signals using characteristic cyclic spectrum

A simple automatic classifier of PSK and FSK signals using characteristic cyclic spectrum Mathmatical Mthods and chniqus in Enginring and Environmntal Scinc A simpl automatic classifir of PSK and FSK signals using charactristic cyclic spctrum ANONIN MAZALEK, ZUZANA VANOVA, VOJECH ONDYHAL, VACLAV

More information

J. Electrical Systems 9-3 (2013): Regular paper

J. Electrical Systems 9-3 (2013): Regular paper Z.M.S. El- Barbary J. Elctrical Systms 9-3 (13): 31-38 JES Corrsponding author: Dpartmnt of Elctrical Enginring, Kafrlshikh Univrsity, Tanta, Egypt, Egypt Dpartmnt of Elctrical Enginring, King Khalid Univrsity,

More information

RADAR SIGNAL FEATURE EXTRACTION SYSTEM BASED ON A SAW DISPERSIVE DELAY LINES

RADAR SIGNAL FEATURE EXTRACTION SYSTEM BASED ON A SAW DISPERSIVE DELAY LINES Molcular and Quantum Acoustics vol. 6, (005) 175 RADAR SIGNAL FEATURE EXTRACTION SYSTEM BASED ON A SAW DISPERSIVE DELAY LINES Adam KAWALEC 1, Andrzj PIENIĘŻNY 1, Th Institut of Radar Tchnology, Faculty

More information

HSMS-2823 RF mixer/detector diode

HSMS-2823 RF mixer/detector diode Products > RF Is/iscrts > Schottky iods > Surfac Mount > HSMS-282 HSMS-282 RF mixr/dtctor diod scription ifcycl status: ctiv Faturs Th HSMS-282x family of schottky diods ar th bst all-round choic for most

More information

In this project you ll learn how to create a game in which you have to save the Earth from space monsters.

In this project you ll learn how to create a game in which you have to save the Earth from space monsters. Clon Wars Introduction In this projct you ll larn how to crat a gam in which you hav to sav th Earth from spac monstrs. Stp 1: Making a Spacship Lt s mak a spacship that will dfnd th Earth! Activity Chcklist

More information

Development of Wide Range High Efficiency for Electric Propulsion System

Development of Wide Range High Efficiency for Electric Propulsion System EVS27 Barclona, Sain, Novmbr 17-2, 213 Dvlomnt of Wi Rang High Efficincy for Elctric Proulsion Systm un-lun Chuang, Yong-ai Lin, Shin-Hung Chang an Bo-Tsng Sung Mchanical an Systms Rsarch Laboratoris,

More information

This is an electronic reprint of the original article. This reprint may differ from the original in pagination and typographic detail.

This is an electronic reprint of the original article. This reprint may differ from the original in pagination and typographic detail. Powrd by TCPDF (www.tcpdf.org) This is an lctronic rprint of th original articl. This rprint may diffr from th original in pagination and typographic dtail. Upadhaya, Brijsh; Martin, Floran; Rasilo, Paavo;

More information

IEEE Broadband Wireless Access Working Group <

IEEE Broadband Wireless Access Working Group < IEEE C802.16j-07/409 Projct Titl IEEE 802.16 Broadband Wirlss Accss Working Group A Proposal for Transmission of FCH, MAP, R-FCH, R-MAP in Non-transparnt Rlay Systm with Cntralizd

More information

Chalmers Publication Library

Chalmers Publication Library Chalmrs Publication Library Ovrviw of dvlopmnts of th lvn Fds This documnt has bn downloadd from Chalmrs Publication Library (CPL). It is th author s vrsion of a work that was accptd for publication in:

More information

Neuro-fuzzy Control of Integrating Processes

Neuro-fuzzy Control of Integrating Processes Nuro-fuzzy Control of Intgrating Procsss Anna Vasičkaninová, Monika Bakošová 1 Fuzzy tchnology is adaptiv and asily applicabl in diffrnt aras.fuzzy logic provids powrful tools to captur th prcption of

More information

Phase-Variable Control of Parallel Synchronized Triple Bias-Flips Interface Circuit towards Broadband Piezoelectric Energy Harvesting

Phase-Variable Control of Parallel Synchronized Triple Bias-Flips Interface Circuit towards Broadband Piezoelectric Energy Harvesting Phas-Variabl Control of Paralll Synchronizd Tril Bias-Flis Intrfac Circuit towards Broadband Pizolctric Enrgy Harvsting Bao Zhao, Junrui Liang, and Kang Zhao School of Information Scinc and Tchnology ShanghaiTch

More information

SIMPLE AND NOVEL HYBRID RANDOM PWM ALGORITHM FOR DTC-INDUCTION MOTOR DRIVE FOR REDUCED ACOUSTICAL NOISE

SIMPLE AND NOVEL HYBRID RANDOM PWM ALGORITHM FOR DTC-INDUCTION MOTOR DRIVE FOR REDUCED ACOUSTICAL NOISE Acta Elctrotchnica t Informatica, ol. 1, No. 4, 01, 69 75, DOI: 10.478/v10198-01-0047-x 69 SIMPLE AND NOEL HYBRID RANDOM PWM ALGORIHM FOR DC-INDUCION MOOR DRIE FOR REDUCED ACOUSICAL NOISE P. NAGASEKHARA

More information

Real Time Speed Control of a DC Motor Based on its Integer and Non-Integer Models Using PWM Signal

Real Time Speed Control of a DC Motor Based on its Integer and Non-Integer Models Using PWM Signal Enginring, Tchnology & Applid Scinc Rsarch Vol. 7, No. 5, 217, 1976-1981 1976 Ral Tim Spd Control of a DC Motor Basd on its Intgr and Non-Intgr Modls Using PWM Signal Abdul Wahid Nasir Elctrical & Elctronics

More information

Performance Analysis and Architecture Design of Vector-Based Ultra- Tightly Coupled GPS/INS Integration on satellite Faults

Performance Analysis and Architecture Design of Vector-Based Ultra- Tightly Coupled GPS/INS Integration on satellite Faults Prformanc Analysis and Architctur Dsign of Vctor-Basd Ultra- ightly Coupld GPS/INS Intgration on satllit Faults XING-LI SUN 1 WAN-ONG CHEN YAN HAN 1 1 School of Information and Communication Enginring,

More information

P-Channel 200-V (D-S) MOSFET

P-Channel 200-V (D-S) MOSFET Si79DN P-Channl -V (D-S) MOSFET PRODUCT SUMMARY V DS (V) R DS(on) (Ω) I D (A) Q g (Typ.) -.5 at V GS = - V -.8.6 nc. at V GS = - 6.V -.6 PowrPAK -8 FEATURES Halogn-fr According to IEC 69-- Availabl TrnchFET

More information

FAN A, 1.2V Low Dropout Linear Regulator for VRM8.5. Features. Description. Applications. Typical Application.

FAN A, 1.2V Low Dropout Linear Regulator for VRM8.5. Features. Description. Applications. Typical Application. www.fairchildsmi.com 2.7A, 1.2V Low Dropout Linar Rgulator for VRM8.5 Faturs Fast transint rspons Low dropout voltag at up to 2.7A Load rgulation: 0.05% typical Trimmd currnt limit On-chip thrmal limiting

More information

Chapter 2 Fundamentals of OFDM

Chapter 2 Fundamentals of OFDM Chaptr 2 Fundamntal of OFDM 2. OFDM Baic [9] Th baic principl of OFDM i to divid th high-rat data tram into many low rat tram that ach i tranmittd imultanouly ovr it own ubcarrir orthogonal to all th othr.

More information

Pitch Rate Damping of an Aircraft by Fuzzy and Classical PD Controller

Pitch Rate Damping of an Aircraft by Fuzzy and Classical PD Controller Pitch Rat Damping of an Aircraft by Fuzzy and Classical PD Controllr YASEMIN ISIK Avionics Dpartmnt Anadolu Univrsity Civil Aviation School, 647, Eskishir TURKEY yaisik@anadolu.du.tr Abstract: - Aircraft

More information

Using SigLab for Production Line Audio Test

Using SigLab for Production Line Audio Test APPLICATION NOTE Using SigLab for Production Lin Audio Tst SigLab is idal for charactrizing audio componnts. Both its input and output subsystms hav low nois, low distortion and low cross talk. SigLab's

More information

Matched filter based algorithm for blind recognition of OFDM systems

Matched filter based algorithm for blind recognition of OFDM systems Matchd filtr basd algorithm for blind rcognition of OFDM systms Abdlaziz Bouzgzi, Philipp Ciblat, and Pirr Jallon CEA-LETI, MIATEC - Grnobl, Franc (Email: abdlaziz.bouzgzi@ca.fr, pirr.jallon@ca.fr) EST,

More information

Uncertainty Estimation of Spectral Mismatch Correction Factor for Incandescent Lamps

Uncertainty Estimation of Spectral Mismatch Correction Factor for Incandescent Lamps ISSN: 347-315 Volum 3 Numbr 7 (July-015) pp. 6-73 www.ijcrar.com Uncrtainty Estimation of Spctral Mismatch Corrction Factor for Incandscnt Lamps Manal A. Haridy* hotomtry and Radiomtry Division, National

More information

Performance of Extended Super-Orthogonal Space -Time Trellis Coded OFDM system

Performance of Extended Super-Orthogonal Space -Time Trellis Coded OFDM system Prformanc of Etndd Supr-Orthogonal Spac -im rllis Codd OFDM systm Ilsanmi B. Oluwafmi, Studnt Mmbr,IEEE, and Stanly H. Mnny, Mmbr IEEE School of Elctrical, Elctronic and Computr Enginring Univrsity of

More information

A Quadrature Signals Tutorial: Complex, But Not Complicated. by Richard Lyons

A Quadrature Signals Tutorial: Complex, But Not Complicated. by Richard Lyons A Quadratur Signals Tutorial: Complx, But Not Complicatd by Richard Lyons Introduction Quadratur signals ar basd on th notion of complx numbrs and prhaps no othr topic causs mor hartach for nwcomrs to

More information

Design of a micro-ring resonator electro-optical modulator embedded in a reverse biased PN junction

Design of a micro-ring resonator electro-optical modulator embedded in a reverse biased PN junction Eindovn, T Ntrlands, Jun 11-13, 2008 TD4 Dsign of a micro-ring rsonator lctro-optical modulator mbddd in a rvrs biasd PN junction A. Brimont 1 F.Y. Gards 2, P. Sancis 1, D. Marris-Morini 3, P. Dumon 4,

More information

A DSP-based Discrete Space Vector Modulation Direct Torque Control of Sensorless Induction Machines

A DSP-based Discrete Space Vector Modulation Direct Torque Control of Sensorless Induction Machines 25 A DSP-basd Discrt Spac ctor Modulation Dirct orqu Control of Snsorlss Induction Machins F. Khoucha, K. Marouani, A. Khloui, K. Aliouan UER Elctrotchniqu, EMP(Ex-ENIA) BP 7 Bordj-El-Bahri, Algirs, Algria

More information

Bi-Directional N-Channel 20-V (D-S) MOSFET

Bi-Directional N-Channel 20-V (D-S) MOSFET Bi-Dirctional N-Channl -V (D-S) MOSFET Si9EDB PRODUCT SUMMARY V SS (V) R SS(on) (Ω) I SS (A). at V GS =.5 V 7.6 at V GS = 3.7 V 6..3 at V GS =.5 V 5.. at V GS =. V 5.5 FEATURES TrnchFET Powr MOSFET Ultra-Low

More information