ECEN 5014, Spring 2013 Special Topics: Active Microwave Circuits and MMICs Zoya Popovic, University of Colorado, Boulder
|
|
- Roberta Patrick
- 6 years ago
- Views:
Transcription
1 ECEN 514, Sprng 13 Specal Topcs: Acte Mcrowae Crcuts and MMICs Zoya Popoc, Unersty of Colorado, Boulder LECTURE 4 BROADBAND AMPLIFIERS L4.1. INTRODUCTION The challenge n desgnng a broadband mcrowae amplfer s the fact that the nput mpedance at lower frequences s practcally an open crcut, and at hgher frequences predomnantly capacte and can be almost a short. Ths makes broadband matchng dffcult. For example, the TrQunt dece we used for the project has an nput mpedance that s practcally an open crcut at.1ghz, s almost purely capacte at 1GHz and ab 35+j6 at 5GHz (the package nductance starts domnatng at the hgher frequences). It s clear that desgnng an mpedance matchng crcut that can coer ths frequency range s a dffcult task. In ths lecture, we cuss possble approaches for small-sgnal amplfers, but the challenge for power amplfers s smlar. An example extreme nput and put mpedance of a LDMOS base-staton power dece s shown n Fg.L4.1, ndcatng sub-ohm alues for both nput and put mpedances. The dece was used to desgn of a Wdeband Code Dson Multple Access (W CDMA) base staton PA, operatng at the ghz range. The expected put power s 7W (CW) wth gan of 1 db. The transstor operates at 8V dran supply, wth maxmal dran oltage of 66V and maxmal dran current of 11 A. The hgh power transstor conssts of two 4 parallel fnger cells, resultng n a ery low nput and put mpedances. Internal pre-matchng s done on the de to ncrease the mpedance to a slghtly hgher leel seen n the fgure. Ths dece cannot be matched oer a broad bandwdth wth sacrfcng put power and gan. Fgure L4.1. Input and put mpedance of a LDMOS power dece at GHz. Measured source (left) and load (rght) mpedance contours of the constant put power (dashed) and gan (sold) for the ACPR=-45 dbc at.11ghz. 5-ohm charts are shown as nsets for easer orentaton. Impedances for the maxmum put power (x) and maxmum gan (+) are also shown. Selected target mpedances (black crcle) are : ZS = (8.5 + j) and ZL = (1.5 j3.5) at.11 GHz. 1
2 There are seeral ways to desgn a broadband nput match to an amplfer, each has ts drawbacks and adantages: (1) broadband non-unform mpedance matchng network desgn; () balanced amplfer; (3) resste feedback amplfer; (4) trbuted and (5) traelng-wae amplfer. The frst type s based on desgnng person-compensaton or pre-person networks and results n ery large mpedance matchng networks whch typcally hae substantal loss. If we hae tme, we wll talk ab these nonunform transmsson lne matchng crcuts. L4.. BALANCED AMPLIFIERS A common approach to the problem of broadband amplfer desgn s a balanced amplfer confguraton shown n Fgure L4.. It conssts of a par of 3-dB couplers. For example, f the couplers are deal 9 hybr (such as a branch lne coupler), the scatterng matrx for the balanced amplfer can be wrtten as: INPUT Matchng network Matchng network dB coupler Acte dece 3-dB coupler OUTPUT Fgure L4.. Balanced amplfer confguraton usng drectonal couplers ( s11 s11)/ j( s1 s1)/ S= ( 1 1. js1 s1 )/ ( s s )/ and f the two amplfers are dentcal, the scatterng matrx becomes: S= js 1 js 1 Ths means that, as long as the amplfer crcuts are dentcal, they can be whateer we wsh, and the amplfer stll has nput and put matchng. The two amplfers can nddually be tuned for gan, nose or flatness of frequency response. Another common balanced amplfer uses Wlknson combner/dders nstead of the branch-lne couplers. In ths case, quarter-wae sectons n the two lnes prode a 18 degree phase dfference
3 between the two waes reflected from the nputs of the amplfers, and the reflectons are cancelled. The bandwdth of the amplfer s obously lmted by the bandwdth of the drectonal coupler or Wlknson spltter, both of whch rely on quarter-wae sectons for proper operaton. Therefore, a hybrd s not the best choce (t has ab 15% bandwdth). Instead, most commonly used s a Lange coupler based on coupled lne sectons, whch can hae a bandwdth of octaes. It s also possble to desgn broadband mult-secton branch lne and Wlknson combners (oer decade bandwdth). We wll talk more ab coupled-lne couplers n the next lecture. Balanced amplfers deally hae the same gan and twce the put power as compared to the sngle amplfer. When the sgnal becomes large, each of the transstors recees only half the power, so balanced amplfers can handle more power wth less sgnal torton. Howeer, twce the nput sgnal s requred, and two tmes more DC power. An addtonal adantage s the sze of the crcut and the fact that a large part of the real-estate s taken by passe crcuts. Ths s ery costly n MMIC mplementatons. An mportant factor n balanced amplfer desgn s the ampltude and phase msmatch between the coupler put ports as a functon of frequency, as well as the senstty of ths msmatch to load mpedance aratons. In a practcal desgn, ths should be erfed n smulaton pror to fabrcaton. L4.3. RESISTIVE FEEDBACK AMPLIFIERS Resste feedback can also be used for desgnng a broadband amplfer. The effect of a feedback resstor between the gate and dran of a MESFET s to lower the nput and put mpedance and to broaden the gan cure. The drawback s resste couplng between the bas crcuts, as well as oerall lower gan than for reactely matched amplfers. By obserng the approxmate crcut model for the MESFET wth normalzed resstance alues (to 5), Fgure L4.4, the equatons for the current and oltage n the nput crcut are found to be: n gmn n rf n r 1 Solng for the nput mpedance by elmnatng, we obtan: Z n n n rf 1 1 gm r 1 3
4 r f n 1(Z ) 1(Z ) r f r n g m n 1 r f + gs - 1 g m n r Fgure L4.4. Smplfed equalent crcuts for nput and put MESFET crcuts n a seres feedback amplfer. For the put crcut, the current and oltage can be expressed as: g 1 r r m gs f (1 r ) f gs where the oltage can be elmnated to ge the expresson for the put mpedance: Z 1 rf 1 gm 1 rf r 1 g m In both cases, the mpedance s reduced and can be controlled by the amount of feedback resstance. R fs R fs Z R fp n Z n gs gmgs R fp n R fp Fgure L4.5. Smplfed crcut for seres-shunt resste feedback amplfer. The aboe smplfed analyss was an example of the more general case of seres-shunt resste feedback shown n Fgure L4.5, where n addton to the seres feedback 4
5 between gate and dran, there s a parallel feedback resstor placed n the source. The admttance matrx for ths network (for a ery smplfed FET model) can be wrtten as 1 1 R n fs R fs n gm gmrfp Rfs Rfs The admttance matrx can now be conerted to s-parameters usng the standard conerson formulas:. 1 g 1 mz Z Rfs (1 gmrfp ) Rfs S 1 gmz Z 1 g 1 mz 1 gmrfp R fs Rfs(1 gmrfp) where gmz Z 1. If the desgn attempts to obtan a match at nput and R R (1 g R ) fs fs m fp put,.e. s 11 s, then the resstor alues are related to the transconductance by gmz Z 1 m fp Rfp Rfs Rfs gm 1 g R or. From the aboe equatons, now s 1 and s 1 can be found to be s Z R Z and s fs 1 1 Z Rfs Z. Notce that the gan of the amplfer depen only on the characterstc mpedance and the alue of the seres feedback resstor, not on the dece parameters. Ths means that flat gan oer a frequency range can be obtaned wth feedback. The physcal meanng of the aboe equatons s that the nput VSWR can be unty wth a poste alue of the parallel feedback resstor, f the transconductance of the acte dece s large. Ths s usually not the case n a MESFET, but s the case n a bpolar transstor. For example, f we desre that the amplfer hae s1 1 db, the mnmal transconductance n a 5-ohm system and the alue of the seres feedback resstor are found by settng R fp (ths s the case that was frst cussed wth just the seres feedback): 5
6 g m,mn 1 s 1 83 ms and Rfs 8. Z Ths s a farly large alue of transconductance. Off course, the standard feedback relaton Rfs Z(1 s1) s ald. When both seres and shunt feedback resstors are used, and the transconductance s large enough, the best nput and put match are obtaned for RfsRfp Z. Ths gnores the phase of s 1, whch can ary rapdly as the frequency ncreases and cause poste feedback through the resstor. Ths can be soled by addng an nductor n the seres feedback branch wth a alue that the amount of feedback decreases after a certan frequency. L4.4. DISTRIBUTED AMPLIFIERS A technque whch achees extremely broadband operaton s the trbuted amplfer, shown n Fgure L4.6. The dea behnd t s that, nstead of tryng to tune the transstor capactances, these capactances are used as part of a lumped-element approxmaton to a transmsson lne. On the nput sde, nductors L g are placed between the gate-to-source capactances C gs of the adjacent transstors, and n that way the famlar lumped-element artfcal transmsson lne wth a characterstc mpedance of Z g Lg / Cgs s formed. Z g s nearly frequency ndependent. The phase elocty of a wae traelng along ths lne s g 1/ LgCgs. Ths transmsson lne can be resstely termnated at the end wth lttle loss of nput sgnal. On the put sde, nductors L d are placed between dran-to-source capactances of the adjacent deces, and a transmsson lne wth a characterstc mpedance Zd Ld / C and phase elocty d 1/ LdC s formed. Ths s an acte transmsson lne and the sgnal bul up along t. The phases of the puts of the nddual transstors wll only be approprate for left-to-rght propagaton, so lttle power wll be lost n the resste termnaton at the left end of the lne. In effect, the two transmsson lnes are coupled lnes wth a couplng coeffcent greater than unty. The nductors L g and L d can be chosen to equalze the phase eloctes of the two coupled lnes. Ths cusson s ald only for a unlateral transstor approxmaton. From ths descrpton of the trbuted amplfers, t appears that an arbtrarly large gan can be acheed by makng a large number of sectons. In the equalent crcut for the transstor, howeer, there are some resstors as well, and ths wll make the transmsson lne lossy. As a result, a lmted number of transstors can be added before the loss oercomes the gan. The frequency cure of the gan as a functon of the number of sectons s shown n Fgure L4.7. It shows that after 5 sectons, there s no apprecable ncrease n gan, whereas the flatness of the gan s reduced. Dstrbuted amplfers hae been reported wth flat gan from 1 to 4GHz, and nto the 1-GHz range. 6
7 Fgure L4.6. A trbuted MESFET amplfer usng a ery smplfed unlateral FET model. Fgure L4.7. Dependance of the gan ersus frequency as a functon of the number of sectons of a trbuted amplfer (from publshed data). Dstrbuted amplfers are monolthcally ntegrated so that the deces are ery small compared to the guded waelength. In practce, t s dffcult to make good nductors n monolthc crcuts (why?) at hgh mcrowae frequences. Therefore, short sectons of transmsson lnes are used nstead between the stages of a trbuted amplfer. Snce n that case, the artfcal transmsson lne model becomes een more of an approxmaton, these amplfers are often ewed as traelng wae deces. The equalent crcut of a traelng wae amplfer s shown n Fgure L4.8. Fgure L4.8. Crcut of a traelng wae trbuted amplfer. 7
Microelectronic Circuits
Mcroelectronc Crcuts Slde 1 Introducton Suggested textbook: 1. Adel S. Sedra and Kenneth C. Smth, Mcroelectronc Crcuts Theory and Applcatons, Sxth edton Internatonal Verson, Oxford Unersty Press, 2013.
More informationIntroduction to Amplifiers
Introducton to Amplfers Dad W. Graham West Vrgna Unersty Lane Department of Computer Scence and Electrcal Engneerng Dad W. Graham, 07 Small Wggles To Bg Wggles Amplfcaton s extremely mportant n electroncs
More informationLECTURE 6 BROAD-BAND AMPLIFIERS
ECEN 54, Spring 18 Active Microwave Circuits Zoya Popovic, University of Colorado, Boulder LECTURE 6 BROAD-BAND AMPLIFIERS The challenge in designing a broadband microwave amplifier is the fact that the
More informationPassive Filters. References: Barbow (pp ), Hayes & Horowitz (pp 32-60), Rizzoni (Chap. 6)
Passve Flters eferences: Barbow (pp 6575), Hayes & Horowtz (pp 360), zzon (Chap. 6) Frequencyselectve or flter crcuts pass to the output only those nput sgnals that are n a desred range of frequences (called
More informationTECHNICAL NOTE TERMINATION FOR POINT- TO-POINT SYSTEMS TN TERMINATON FOR POINT-TO-POINT SYSTEMS. Zo = L C. ω - angular frequency = 2πf
TECHNICAL NOTE TERMINATION FOR POINT- TO-POINT SYSTEMS INTRODUCTION Because dgtal sgnal rates n computng systems are ncreasng at an astonshng rate, sgnal ntegrty ssues have become far more mportant to
More informationECE315 / ECE515 Lecture 5 Date:
Lecture 5 Date: 18.08.2016 Common Source Amplfer MOSFET Amplfer Dstorton Example 1 One Realstc CS Amplfer Crcut: C c1 : Couplng Capactor serves as perfect short crcut at all sgnal frequences whle blockng
More informationantenna antenna (4.139)
.6.6 The Lmts of Usable Input Levels for LNAs The sgnal voltage level delvered to the nput of an LNA from the antenna may vary n a very wde nterval, from very weak sgnals comparable to the nose level,
More informationLecture 30: Audio Amplifiers
Whtes, EE 322 Lecture 30 Page 1 of 9 Lecture 30: Audo Amplfers Once the audo sgnal leaes the Product Detector, there are two more stages t passes through before beng output to the speaker (ref. Fg. 1.13):
More informationAnalysis, Design, and Simulation of a Novel Current Sensing Circuit
Analyss, Desgn, and Smulaton of a Noel Current Sensng Crcut Louza Sellam Electrcal and Computer Engneerng Department US Naal Academy Annapols, Maryland, USA sellam@usna.edu obert W. Newcomb Electrcal and
More informationPOLYTECHNIC UNIVERSITY Electrical Engineering Department. EE SOPHOMORE LABORATORY Experiment 1 Laboratory Energy Sources
POLYTECHNIC UNIERSITY Electrcal Engneerng Department EE SOPHOMORE LABORATORY Experment 1 Laboratory Energy Sources Modfed for Physcs 18, Brooklyn College I. Oerew of the Experment Ths experment has three
More informationBiomedical Instrumentation
Bomedcal Instrumentaton Amplers & Wnter 1393 Bonab Unersty Applcatons o Operatonal Ampler (In Bologcal s and Systems) The three major operatons done on bologcal sgnals usng OpAmp: 1) Amplcatons and Attenuatons
More informationTransistor Characterization and Modeling and the Use of Embedding Device Models for the Design of Microwave Power Amplifiers
Transstor Characterzaton and Modelng and the Use of Embeddng Dece Models for the Desgn of Mcrowae Power Amplfers Patrck Robln, Francsco J. Martnez-Rodrguez,, Hsu Chen Chang, Chenggang Xe and Jose I. Martnez-opez
More informationChapter 13. Filters Introduction Ideal Filter
Chapter 3 Flters 3.0 Introducton Flter s the crcut that capable o passng sgnal rom nput to output that has requency wthn a speced band and attenuatng all others outsde the band. Ths s the property o selectvty.
More informationDIMENSIONAL SYNTHESIS FOR WIDE-BAND BAND- PASS FILTERS WITH QUARTER-WAVELENGTH RES- ONATORS
Progress In Electromagnetcs Research B, Vol. 17, 213 231, 29 DIMENSIONAL SYNTHESIS FOR WIDE-BAND BAND- PASS FILTERS WITH QUARTER-WAVELENGTH RES- ONATORS Q. Zhang and Y. Lu School of Electrcal and Electroncs
More informationHigh Speed ADC Sampling Transients
Hgh Speed ADC Samplng Transents Doug Stuetzle Hgh speed analog to dgtal converters (ADCs) are, at the analog sgnal nterface, track and hold devces. As such, they nclude samplng capactors and samplng swtches.
More informationCHAPTER 4 INSTANTANEOUS SYMMETRICAL COMPONENT THEORY
74 CHAPTER 4 INSTANTANEOUS SYMMETRICAL COMPONENT THEORY 4. INTRODUCTION Ths chapter deals wth nstantaneous symmetrcal components theory for current and oltage compenton. The technque was ntroduced by Forteue.
More informationSmart Grid Technologies for Reactive Power Compensation in Motor Start Applications
1 Smart Grd Technologes for Reacte Power Compensaton n Motor Start Applcatons Maryclare Peterson, Member, IEEE and Brj N. Sngh, Member, IEEE Abstract Seeral major power outages hae been attrbuted to nsuffcent
More informationTHE ARCHITECTURE OF THE BROADBAND AMPLIFIERS WITHOUT CLASSICAL STAGES WITH A COMMON BASE AND A COMMON EMITTER
VOL. 0, NO. 8, OCTOBE 205 ISSN 89-6608 2006-205 Asan esearch Publshng Network (APN. All rghts reserved. THE ACHITECTUE OF THE BOADBAND AMPLIFIES WITHOUT CLASSICAL STAGES WITH A COMMON BASE AND A COMMON
More informationNATIONAL RADIO ASTRONOMY OBSERVATORY Green Bank, West Virginia SPECTRAL PROCESSOR MEMO NO. 25. MEMORANDUM February 13, 1985
NATONAL RADO ASTRONOMY OBSERVATORY Green Bank, West Vrgna SPECTRAL PROCESSOR MEMO NO. 25 MEMORANDUM February 13, 1985 To: Spectral Processor Group From: R. Fsher Subj: Some Experments wth an nteger FFT
More informationECE 2133 Electronic Circuits. Dept. of Electrical and Computer Engineering International Islamic University Malaysia
ECE 2133 Electronc Crcuts Dept. of Electrcal and Computer Engneerng Internatonal Islamc Unversty Malaysa Chapter 12 Feedback and Stablty Introducton to Feedback Introducton to Feedback 1-4 Harold Black,
More informationCMOS Implementation of Lossy Integrator using Current Mirrors Rishu Jain 1, Manveen Singh Chadha 2 1, 2
Proceedngs of Natonal Conference on Recent Advances n Electroncs and Communcaton Engneerng CMOS Implementaton of Lossy Integrator usng Current Mrrors Rshu Jan, Manveen Sngh Chadha 2, 2 Department of Electroncs
More informationDesign of RF and Microwave Filters
Desn of RF and Mcrowave Flters 차례. Introducton ; types of Flters --------------------------------------. Characterzaton of Flters ------------------------------------------ 3. Approxmate Desn Methods --------------------------------------
More informationIEE Electronics Letters, vol 34, no 17, August 1998, pp ESTIMATING STARTING POINT OF CONDUCTION OF CMOS GATES
IEE Electroncs Letters, vol 34, no 17, August 1998, pp. 1622-1624. ESTIMATING STARTING POINT OF CONDUCTION OF CMOS GATES A. Chatzgeorgou, S. Nkolads 1 and I. Tsoukalas Computer Scence Department, 1 Department
More information29. Network Functions for Circuits Containing Op Amps
9. Network Functons for Crcuts Contanng Op Amps Introducton Each of the crcuts n ths problem set contans at least one op amp. Also each crcut s represented by a gven network functon. These problems can
More informationTHE GENERATION OF 400 MW RF PULSES AT X-BAND USING RESONANT DELAY LINES *
SLAC PUB 874 3/1999 THE GENERATION OF 4 MW RF PULSES AT X-BAND USING RESONANT DELAY LINES * Sam G. Tantaw, Arnold E. Vleks, and Rod J. Loewen Stanford Lnear Accelerator Center, Stanford Unversty P.O. Box
More informationEE133 - Lab 6 RF Amplification: The Power Amplifier and LNA (revisited)
Lab 6 - The Power Amplfer and LNA - EE133 - Prof. Dutton - Wnter 2004 1 EE133 - Lab 6 RF Amplfcaton: The Power Amplfer and LNA (revsted) 1 Introducton There wll be no formal Prelab 6 handout. Ths does
More informationACTIVE RESISTANCE EMULATION IN THREE-PHASE RECTIFIER WITH SUBOPTIMAL CURRENT INJECTION
6 th INTNTIONL SYMPOSIUM on POW ELECTRONICS - Ee NOVI SD, REPULIC O SI, October 6 th - 8 th, CTIVE RESISTNCE EMULTION IN THREE-PHSE RECTII WITH SUOPTIML CURRENT INJECTION Mlan Darjeć, Predrag Pejoć, Yasuyuk
More informationFigure.1. Basic model of an impedance source converter JCHPS Special Issue 12: August Page 13
A Hgh Gan DC - DC Converter wth Soft Swtchng and Power actor Correcton for Renewable Energy Applcaton T. Selvakumaran* and. Svachdambaranathan Department of EEE, Sathyabama Unversty, Chenna, Inda. *Correspondng
More informationCharacteristics of New Single Phase Voltage Doubler Rectifier Circuit using the Partial Switching Strategy
IEEE PEDS 217, Honolulu, USA 12 15 December 217 Characterstcs of New gle Phase Voltage Doubler Rectfer Crcut usng the Partal Swtchng Strategy Kenj Ame Akto Kumaga Takahsa Ohj Kyohe Kyota Masaak Saku Unersty
More informationHarmonic Balance of Nonlinear RF Circuits
MICROWAE AND RF DESIGN Harmonc Balance of Nonlnear RF Crcuts Presented by Mchael Steer Readng: Chapter 19, Secton 19. Index: HB Based on materal n Mcrowave and RF Desgn: A Systems Approach, nd Edton, by
More informationDevelopment of a High Bandwidth, High Power Linear Amplifier for a Precision Fast Tool Servo System
Development of a Hgh Bandwdth, Hgh Power near Amplfer for a Precson Fast Tool Servo System S. Rakuff 1, J. Cuttno 1, D. Schnstock 2 1 Dept. of Mechancal Engneerng, The Unversty of North Carolna at Charlotte,
More informationOn-Line Capacitance Estimation of DC-Link Electrolytic Capacitor by Input Current Injection for ac/dc PWM Converters. I.
On-Lne Capactance Estmaton of DC-Lnk Capactor by Input Current Injecton for PWM Conerters On-Lne Capactance Estmaton of DC-Lnk Electrolytc Capactor by Input Current Injecton for ac/ PWM Conerters Dong-Choon
More informationEE 508 Lecture 6. Degrees of Freedom The Approximation Problem
EE 508 Lecture 6 Degrees of Freedom The Approxmaton Problem Revew from Last Tme Desgn Strategy Theorem: A crcut wth transfer functon T(s) can be obtaned from a crcut wth normalzed transfer functon T n
More information... -J to send radio signals through the air, how modulation , IJ."~ UNITED STATES~~ FREQUENCY ALLOCATIONS
..., J."..J What would lfe be lke wthout rado and televson? Only a hundred years ago the fastest way to send a message between Amerca and Europe or Asa was a fast shp. Now we get lve televson coverage
More informationModeling and Design Considerations of Coupled Inductor Converters
Modelng and Desgn onsderatons of oupled Inductor onerters Guangyong Zhu Auscom Engneerng, Inc. A subsdary of ompal Electroncs, Inc. One Dell Way, Round Roc, TX 7868 Abstract-In ths part of the sequel on
More informationLecture 3: Multi-layer perceptron
x Fundamental Theores and Applcatons of Neural Netors Lecture 3: Mult-laer perceptron Contents of ths lecture Ree of sngle laer neural ors. Formulaton of the delta learnng rule of sngle laer neural ors.
More informationCalculation of the received voltage due to the radiation from multiple co-frequency sources
Rec. ITU-R SM.1271-0 1 RECOMMENDATION ITU-R SM.1271-0 * EFFICIENT SPECTRUM UTILIZATION USING PROBABILISTIC METHODS Rec. ITU-R SM.1271 (1997) The ITU Radocommuncaton Assembly, consderng a) that communcatons
More informationAtlanta RF Services, Software & Designs
June-2017 www.atlantarf.com 1 Parallel Coupled Bandpass Flters (Strplne and Mcrostrp) www.atlantarf.com Presentaton Content Parallel Coupled Bandpass Flters 1. Techncal Artcles on Parallel Coupled Bandpass
More informationRC Filters TEP Related Topics Principle Equipment
RC Flters TEP Related Topcs Hgh-pass, low-pass, Wen-Robnson brdge, parallel-t flters, dfferentatng network, ntegratng network, step response, square wave, transfer functon. Prncple Resstor-Capactor (RC)
More informationSection 5. Signal Conditioning and Data Analysis
Secton 5 Sgnal Condtonng and Data Analyss 6/27/2017 Engneerng Measurements 5 1 Common Input Sgnals 6/27/2017 Engneerng Measurements 5 2 1 Analog vs. Dgtal Sgnals 6/27/2017 Engneerng Measurements 5 3 Current
More informationEnergy Comparison of MPPT Techniques Using Cuk Converter
Internatonal Journal of Innoate Research n Adanced Engneerng (IJIRAE) ISSN: 23492163 Volume 1 Issue 6 (July 214) Energy Comparson of MPPT Technques Usng Cuk Conerter R.B.Wankhede 1 PROF.U.B.Vadya 2 1 Student
More informationGraph Method for Solving Switched Capacitors Circuits
Recent Advances n rcuts, ystems, gnal and Telecommuncatons Graph Method for olvng wtched apactors rcuts BHUMIL BRTNÍ Department of lectroncs and Informatcs ollege of Polytechncs Jhlava Tolstého 6, 586
More informationRejection of PSK Interference in DS-SS/PSK System Using Adaptive Transversal Filter with Conditional Response Recalculation
SERBIAN JOURNAL OF ELECTRICAL ENGINEERING Vol., No., November 23, 3-9 Rejecton of PSK Interference n DS-SS/PSK System Usng Adaptve Transversal Flter wth Condtonal Response Recalculaton Zorca Nkolć, Bojan
More informationDigital Transmission
Dgtal Transmsson Most modern communcaton systems are dgtal, meanng that the transmtted normaton sgnal carres bts and symbols rather than an analog sgnal. The eect o C/N rato ncrease or decrease on dgtal
More informationTo: Professor Avitabile Date: February 4, 2003 From: Mechanical Student Subject: Experiment #1 Numerical Methods Using Excel
To: Professor Avtable Date: February 4, 3 From: Mechancal Student Subject:.3 Experment # Numercal Methods Usng Excel Introducton Mcrosoft Excel s a spreadsheet program that can be used for data analyss,
More informationLatency Insertion Method (LIM) for IR Drop Analysis in Power Grid
Abstract Latency Inserton Method (LIM) for IR Drop Analyss n Power Grd Dmtr Klokotov, and José Schutt-Ané Wth the steadly growng number of transstors on a chp, and constantly tghtenng voltage budgets,
More informationChapter 4: Switch realization
Chapter 4. Swtch Realzat 4.. Swtch applcats Sngle-, two-, and four-quadrant swtches. Synchrous rectfers 4.2. A bref surey of power semcductor deces Power dodes, MOSFETs, BJTs, IGBTs, and thyrstors 4.3.
More informationCorrelation Analysis of Multiple-Input Multiple-Output Channels with Cross-Polarized Antennas
Correlaton Analyss of Multple-Input Multple-Output Channels wth Cross-Polarzed Antennas Le Jang, Volker Jungnckel, Stephan Jaeckel, Lars Thele and Armn Brylka Fraunhofer Insttute for Telecommuncatons,
More informationEE 201 Lab Lab 9. AC analysis. This week we look at some (relatively) simple AC circuits.
A analyss Ths week we look at some (relatvely) smple A crcuts. In lab Buld each of the crcuts shown below. In each case, the source s a snusod. Varous ampltudes and frequences wll be used, as descrbed
More informationSIS MIXER ANALYSIS WITH NON-ZERO INTERMEDIATE FREQUENCIES. S.-K. Pan and A. R. Kerr National Radio Astronomy Observatory* Charlottesville, VA 22903
3- SIS MIXER ANALYSIS WITH NON-ZERO INTERMEDIATE FREQUENCIES S.-K. Pan and A. R. Kerr Natonal Rado Astronomy Observatory* Charlottesvlle VA 2293 ABSTRACT Most desgn and analyss of Superconductor-Insulator-Superconductor
More informationA High-Sensitivity Oversampling Digital Signal Detection Technique for CMOS Image Sensors Using Non-destructive Intermediate High-Speed Readout Mode
A Hgh-Senstvty Oversamplng Dgtal Sgnal Detecton Technque for CMOS Image Sensors Usng Non-destructve Intermedate Hgh-Speed Readout Mode Shoj Kawahto*, Nobuhro Kawa** and Yoshak Tadokoro** *Research Insttute
More informationSensors for Motion and Position Measurement
Sensors for Moton and Poston Measurement Introducton An ntegrated manufacturng envronment conssts of 5 elements:- - Machne tools - Inspecton devces - Materal handlng devces - Packagng machnes - Area where
More informationBoise State University Department of Electrical and Computer Engineering ECE 212L Circuit Analysis and Design Lab
Bose State Unersty Department of Electrcal and Computer Engneerng ECE Crcut Analyss and Desgn ab Experment #6: Transformers, Mutual Inductance, and Coupled Cols Objectes The objectes of ths laboratory
More informationMicro-grid Inverter Parallel Droop Control Method for Improving Dynamic Properties and the Effect of Power Sharing
2015 AASRI Internatonal Conference on Industral Electroncs and Applcatons (IEA 2015) Mcro-grd Inverter Parallel Droop Control Method for Improvng Dynamc Propertes and the Effect of Power Sharng aohong
More informationParameter Free Iterative Decoding Metrics for Non-Coherent Orthogonal Modulation
1 Parameter Free Iteratve Decodng Metrcs for Non-Coherent Orthogonal Modulaton Albert Gullén Fàbregas and Alex Grant Abstract We study decoder metrcs suted for teratve decodng of non-coherently detected
More informationImprovement of the Shunt Active Power Filter Dynamic Performance
Improvement of the Shunt Actve Power Flter Dynamc Performance Krzysztof Potr Sozansk Unversty of Zelona Góra, Faculty of Electrcal Engneerng omputer Scence and Telecommuncatons Zelona Góra, Poland Abstract
More informationAC-DC CONVERTER FIRING ERROR DETECTION
BNL- 63319 UC-414 AGS/AD/96-3 INFORMAL AC-DC CONVERTER FIRING ERROR DETECTION O.L. Gould July 15, 1996 OF THIS DOCUMENT IS ALTERNATING GRADIENT SYNCHROTRON DEPARTMENT BROOKHAVEN NATIONAL LABORATORY ASSOCIATED
More informationIntegrated Dual Output Buck Boost Converter for Industrial Application.
Integrated Dual Output Buck Boost Conerter for Industral Applcaton. Dya enugopalan Electrcal and Electroncs Department Jyoth Engneerng College. Cheruthuruthy. Thrssur, Inda eshma aj C Electrcal and Electroncs
More informationScilab/Scicos Modeling, Simulation and PC Based Implementation of Closed Loop Speed Control of VSI Fed Induction Motor Drive
16th NATIONAL POWER SYSTEMS CONFERENCE, 15th-17th DECEMBER, 2010 453 Sclab/Sccos Modelng, Smulaton and PC Based Implementaton of Closed Loop Speed Control of VSI Fed Inducton Motor Dre Vjay Babu Korebona,
More informationWalsh Function Based Synthesis Method of PWM Pattern for Full-Bridge Inverter
Walsh Functon Based Synthess Method of PWM Pattern for Full-Brdge Inverter Sej Kondo and Krt Choesa Nagaoka Unversty of Technology 63-, Kamtomoka-cho, Nagaoka 9-, JAPAN Fax: +8-58-7-95, Phone: +8-58-7-957
More informationNetwork Theory. EC / EE / IN. for
Network Theory for / / IN By www.thegateacademy.com Syllabus Syllabus for Networks Network Graphs: Matrces Assocated Wth Graphs: Incdence, Fundamental ut Set and Fundamental rcut Matrces. Soluton Methods:
More informationN- and P-Channel 2.5-V (G-S) MOSFET
S456DY N- and P-Channel.5-V (G-S) MOSFET PRODUCT SUMMARY V DS (V) R DS(on) (Ω) (A).5 at 7. N-Channel.35 at V GS =.5 V 6. FEATURES Halogen-free Accordng to IEC 649-- Defnton TrenchFET Power MOSFET:.5 Rated
More informationSwitched-Capacitor Filter Optimization with Respect to Switch On-State Resistance and Features of Real Operational Amplifiers
34 L. DOLÍVKA, J. HOSPODKA, SWITCHED-CAPACITOR FILTER OPTIMIZATION Swtched-Capactor Flter Optmzaton wth Respect to Swtch On-State Resstance and Features of Real Operatonal Amplfers Lukáš DOLÍVKA, Jří HOSPODKA
More informationComparison of Reference Compensating Current Estimation Techniques for Shunt Active Filter
Comparson of Reference Compensatng Current Estmaton Technques for Shunt Acte Flter R.SHANMUGHA SUNDARAM K.J.POORNASEVAN N.DEVARAJAN Department of Electrcal & Electroncs Engneerng Goernment College of Technology
More informationVoltage Quality Enhancement and Fault Current Limiting with Z-Source based Series Active Filter
Research Journal of Appled Scences, Engneerng and echnology 3(): 246-252, 20 ISSN: 2040-7467 Maxwell Scentfc Organzaton, 20 Submtted: July 26, 20 Accepted: September 09, 20 Publshed: November 25, 20 oltage
More informationElectronic Circuits Modeling Using Artificial Neural Networks
JOUNAL OF AUTOMATIC CONTOL, UNIVEITY OF BELGAE, VOL. 3():3-37, 3 Electronc Crcuts Modelng Usng Artfcal Neural Networks Mona Andrejeć and Vančo Ltosk Abstract - In ths paper artfcal neural networks () are
More informationDevelopment Board EPC9126HC Quick Start Guide
Development Board EPC96HC Quck Start Gude EPCC V Hgh Current Pulsed Laser Dode Drver Revson. DESCRIPTION The EPC96HC development board s prmarly ntended to drve laser dodes wth hgh current pulses wth total
More informationDevelopment Board EPC9126 Quick Start Guide
Development Board EPC96 Quck Start Gude EPC6C V Hgh Current Pulsed Laser Dode Drver Revson. DESCRIPTION The EPC96 development board s prmarly ntended to drve laser dodes wth hgh current pulses wth total
More informationSimulation of Distributed Power-Flow Controller (Dpfc)
RESEARCH INVENTY: Internatonal Journal of Engneerng and Scence ISBN: 2319-6483, ISSN: 2278-4721, Vol. 2, Issue 1 (January 2013), PP 25-32 www.researchnventy.com Smulaton of Dstrbuted Power-Flow Controller
More informationA Novel Soft-Switching Two-Switch Flyback Converter with a Wide Operating Range and Regenerative Clamping
77 Journal of ower Electroncs, ol 9, No 5, September 009 JE 9-5- A Novel Soft-Swtchng Two-Swtch Flybac Converter wth a Wde Operatng Range and Regeneratve Clampng Marn-Go Km and Young-Seo Jung * Dvson of
More informationA study of turbo codes for multilevel modulations in Gaussian and mobile channels
A study of turbo codes for multlevel modulatons n Gaussan and moble channels Lamne Sylla and Paul Forter (sylla, forter)@gel.ulaval.ca Department of Electrcal and Computer Engneerng Laval Unversty, Ste-Foy,
More informationSimulation Methodology for Analysis of Substrate Noise Impact on Analog / RF Circuits Including Interconnect Resistance
Smulaton Methodology for Analyss of Substrate Nose Impact on Analog / RF Crcuts Includng Interconnect Resstance C. Soens (1,2), G. Van der Plas (1), P. Wambacq (1,3), S. Donnay (1) (1) IMEC (2) also Ph.D.
More information4.3- Modeling the Diode Forward Characteristic
2/8/2012 3_3 Modelng the ode Forward Characterstcs 1/3 4.3- Modelng the ode Forward Characterstc Readng Assgnment: pp. 179-188 How do we analyze crcuts wth juncton dodes? 2 ways: Exact Solutons ffcult!
More informationOptimization of Microstrip Ring UWB filter using ANN- PSO
Internatonal Journal of Scentfc and Research Publcatons, Volume 3, Issue 8, August 2013 1 Optmzaton of Mcrostrp Rng UWB flter usng ANN- PSO Mandpa Nath AIACTR, elh mandpa.deoghar@gmal.com Abstract- Ultra-Wde
More informationHigh Gain Soft-switching Bidirectional DC-DC Converters for Eco-friendly Vehicles
Hgh Gan Soft-swtchng Bdrectonal DC-DC Converters for Eco-frendly ehcles Mnho Kwon, Junsung Park and Sewan Cho, EEE Senor Member Department of Electrcal and nformaton Engneerng Seoul Natonal Unversty of
More informationControl of Chaos in Positive Output Luo Converter by means of Time Delay Feedback
Control of Chaos n Postve Output Luo Converter by means of Tme Delay Feedback Nagulapat nkran.ped@gmal.com Abstract Faster development n Dc to Dc converter technques are undergong very drastc changes due
More informationKeywords LTE, Uplink, Power Control, Fractional Power Control.
Volume 3, Issue 6, June 2013 ISSN: 2277 128X Internatonal Journal of Advanced Research n Computer Scence and Software Engneerng Research Paper Avalable onlne at: www.jarcsse.com Uplnk Power Control Schemes
More informationOptimization Frequency Design of Eddy Current Testing
Optmzaton Frequency Desgn of Eddy Current Testng NAONG MUNGKUNG 1, KOMKIT CHOMSUWAN 1, NAONG PIMPU 2 AND TOSHIFUMI YUJI 3 1 Department of Electrcal Technology Educaton Kng Mongkut s Unversty of Technology
More informationTuned PI Controller using Zeigler-Nichols Method for Power Quality Enhancement for linear and non linear loads
Tuned PI Controller usng Zegler-Nchols Method for Power Qualty Enhancement for lnear and non lnear s Rtu Sharma Department of Electrcal Engneerng, Gurgaon Insttute of Technology & Management, Gurgaon Emal:
More information1 GSW Multipath Channel Models
In the general case, the moble rado channel s pretty unpleasant: there are a lot of echoes dstortng the receved sgnal, and the mpulse response keeps changng. Fortunately, there are some smplfyng assumptons
More informationLecture 10: Bipolar Junction Transistor Construction. NPN Physical Operation.
Whtes, EE 320 Lecture 10 Page 1 of 9 Lecture 10: Bpolar Juncton Transstor Constructon. NPN Physcal Operaton. For the remander of ths semester we wll be studyng transstors and transstor crcuts. The transstor
More informationCOMPARISON ANALYSIS OF SHUNT ACTIVE FILTER AND TRANSFORMERLESS PARALLEL HYBRID ACTIVE FILTER
COMPARISON ANALYSIS OF SHUNT ACTIVE FILTER AND TRANSFORMERLESS PARALLEL HYBRID ACTIVE FILTER Saksh Banga 1, P.R.Sharma 2 and Maneesha Garg 3 1,2 Department of Electrcal Engneerng, YMCA Unersty Of Scence
More informationReflections on Rotators, Or, How to Turn the FEL Upgrade 3F Skew Quad Rotator Into a Skew Quad Rotator
JLAB-TN-4-23 4 August 24 Reflectons on Rotators, Or, How to Turn the FEL Upgrade 3F Skew Quad Rotator nto a Skew Quad Rotator D. Douglas ntroducton A prevous note [] descrbes a smple skew quad system that
More informationLearning Ensembles of Convolutional Neural Networks
Learnng Ensembles of Convolutonal Neural Networks Lran Chen The Unversty of Chcago Faculty Mentor: Greg Shakhnarovch Toyota Technologcal Insttute at Chcago 1 Introducton Convolutonal Neural Networks (CNN)
More informationUnit 1. Current and Voltage U 1 VOLTAGE AND CURRENT. Circuit Basics KVL, KCL, Ohm's Law LED Outputs Buttons/Switch Inputs. Current / Voltage Analogy
..2 nt Crcut Bascs KVL, KCL, Ohm's Law LED Outputs Buttons/Swtch Inputs VOLTAGE AND CRRENT..4 Current and Voltage Current / Voltage Analogy Charge s measured n unts of Coulombs Current Amount of charge
More informationPerformance Analysis of Multi User MIMO System with Block-Diagonalization Precoding Scheme
Performance Analyss of Mult User MIMO System wth Block-Dagonalzaton Precodng Scheme Yoon Hyun m and Jn Young m, wanwoon Unversty, Department of Electroncs Convergence Engneerng, Wolgye-Dong, Nowon-Gu,
More informationAbout theoretical and practical aspects of current mode RC oscillators design
INTERNATIONAL JOURNAL OF CIRCUITS, SYSTEMS AND SINAL PROCESSIN About theoretcal and practcal aspects of current mode RC oscllators desgn Luza rgorescu, Ioana Daconescu, heorghe Oproescu Abstract Ths paper
More informationHigh Speed, Low Power And Area Efficient Carry-Select Adder
Internatonal Journal of Scence, Engneerng and Technology Research (IJSETR), Volume 5, Issue 3, March 2016 Hgh Speed, Low Power And Area Effcent Carry-Select Adder Nelant Harsh M.tech.VLSI Desgn Electroncs
More informationReactive power compensation for nonlinear loads using Fuzzy controller
NT J CU SC 07, 0(4: E 0-9 ESEACH ATCE SSN 50-770 eacte power compensaton or nonlnear loads usng Fuzzy controller Sreedhar K, SS Deeksht and D. Nagendra* Department o EEE, ATS ajampet, Kadapa, A.P. nda
More informationComparative Analysis of Reuse 1 and 3 in Cellular Network Based On SIR Distribution and Rate
Comparatve Analyss of Reuse and 3 n ular Network Based On IR Dstrbuton and Rate Chandra Thapa M.Tech. II, DEC V College of Engneerng & Technology R.V.. Nagar, Chttoor-5727, A.P. Inda Emal: chandra2thapa@gmal.com
More informationA Current Differential Line Protection Using a Synchronous Reference Frame Approach
A Current Dfferental Lne rotecton Usng a Synchronous Reference Frame Approach L. Sousa Martns *, Carlos Fortunato *, and V.Fernão res * * Escola Sup. Tecnologa Setúbal / Inst. oltécnco Setúbal, Setúbal,
More informationResearch on Controller of Micro-hydro Power System Nan XIE 1,a, Dezhi QI 2,b,Weimin CHEN 2,c, Wei WANG 2,d
Advanced Materals Research Submtted: 2014-05-13 ISSN: 1662-8985, Vols. 986-987, pp 1121-1124 Accepted: 2014-05-19 do:10.4028/www.scentfc.net/amr.986-987.1121 Onlne: 2014-07-18 2014 Trans Tech Publcatons,
More informationImpact of Interference Model on Capacity in CDMA Cellular Networks. Robert Akl, D.Sc. Asad Parvez University of North Texas
Impact of Interference Model on Capacty n CDMA Cellular Networks Robert Akl, D.Sc. Asad Parvez Unversty of North Texas Outlne Introducton to CDMA networks Average nterference model Actual nterference model
More informationMesh Equations. Introduction
Mesh Equatons Introducton The crcuts n ths problem set consst of resstors and ndependent sources. We wll analyze these crcuts by wrtng and solvng a set of mesh equatons. To wrte mesh equatons, we. Express
More information64-QAM Communication System using Three-beam Spatial Power Combining Technology
9th AIAA Internatonal Communcatons Satellte Systems Conference (ICSSC-) 8 November - December, Nara, Japan AIAA -86 64-QAM Communcaton System usng Three-beam Spatal ower Combnng Technology Masayosh Tanaka
More informationModeling, Analysis and Control of Hexagram Inverter for Three- Phase Induction Motor Drive
Control Theory and Informatcs ISSN 2224-5774 (prnt) ISSN 2225-0492 (onlne) Modelng, Analyss and Control of Hexagram Inerter for Three- Phase Inducton Motor Dre K.Rajambal Department of Electrcal and Electroncs
More informationTriferential Subtraction in Strain Gage Signal Conditioning. Introduction
Trferental Subtracton n Stran Gage Sgnal Condtonng Karl F. Anderson Vald Measurements 3751 W. Ave. J-14 Lancaster, CA 93536 (661) 722-8255 http://www.vm-usa.com Introducton The general form of NASA's Anderson
More informationNetworks. Backpropagation. Backpropagation. Introduction to. Backpropagation Network training. Backpropagation Learning Details 1.04.
Networs Introducton to - In 1986 a method for learnng n mult-layer wor,, was nvented by Rumelhart Paper Why are what and where processed by separate cortcal vsual systems? - The algorthm s a sensble approach
More informationAnalysis and Design of Charge Pumps for Telecommunication Applications
Analyss and Desgn of Charge Pumps for Telecommuncaton Applcatons Vassls Kalenterds, Konstantnos Papathanasou, and Stylanos Sskos Electroncs Laboratory, Physcs Department, Arstotle Unversty of Thessalonk
More information