Chebyshev Microwave Filter Design by Using Dielectric. Combline Resonators ABSTRACT
|
|
- Stuart Gray
- 5 years ago
- Views:
Transcription
1 Chebyshev Microwave Filter Design by Using Dielectric Combline Resonators ABSTRACT Microwave filters are important in the design of modern communications systems, military applications and the satellite communication systems. In this decade the rapid growth of mobile communication has catalyzed an increasing demand for a high performance microwave filters []. Cellular communication base-stations demanded low loss high power-handling filters with small physical size, capable of being manufactured in tens of thousands at a reasonable cost. These demands led to advances in coaxial resonators and dielectric loaded resonators. Dielectric combline resonators combine the merits of conventional combline and dielectric loaded resonator. They are based on quarter-wave length long coaxial structures. By replacing the metallic inner with a high permittivity dielectric inner rod of a conventional combline resonator, it can achieve higher unloaded Q without increasing the volume of the resonator. This resonator will fill the gap between waveguide and stripline technologies [], []. This work will investigate and model the tuning characteristics of individual dielectric combline resonators, a way of achieving very low external Q and also the nature of the coupling between adjacent and non-adjacent resonators. Finally 3 rd Chebyshev and Elliptic function microwave filter by using dielectric combline resonators for GSM 8 mobile communication base stations will be designed.
2 I. INTRODUCTION Microwave Cavity Filter A microwave cavity filter can be treated as a two-port network. Such a network is used to control a frequency response by allowing transmission at frequencies within the passband and attenuation in the stopband of the filter. It is normally realized by cascading a series of resonators which all have the same resonance frequency. Combline Resonators A conventional combline resonator (see Fig.) has an inner metal rod and a rectangular or cylindrical enclosure. Such resonators are low cost, have a wide tuning range and an excellent spurious free performance [], [], [3]; however, the draw back of the conventional combline resonators is their relatively high loss, due to the low unloaded Q (e.g. 5) of the resonator compared to dielectric combline resonators. Metal / Dielectric Inner Post λ 4 r L Figure- Schematic of a Quarter-Wave Resonator A dielectric combline resonator (see Fig-) is formed by replacing the metallic inner with a high permittivity dielectric inner rod, it can achieve high unloaded Q of up to, because the magnetic filed is continuous at the boundary of the dielectric and no current is introduced in the dielectric rod []. Quarter-Wave Length Resonator
3 Basic Principle of Dielectric Combline Resonator The precondition of replacing the inner metal by a dielectric is that the dielectric must behave like a metal in terms of the electric field pattern within the cavity. It means that there must be no (or very little) static electric field within the dielectric. The electric flux density D within the dielectric of permittivity r is defined as: D = r = E () E The electric flux density D of free space is defined as: D = () E The boundary condition (see Fig-) states that the perpendicular component of electric flux density D is the same on either side of the boundary if the boundary carries no free charge. D = D (3) Figure- Interface between Two Materials E D D E = (4) = = r r Hence E inside the dielectric is reduced by the factor of r, it means that E (5) r The dielectric will behave like a perfect conducing metal ifr approaches to infinity. The dielectric combline resonator is based on this principle. r 3
4 Quality Factors Quality factor is used to measure the loss of a resonator circuit. Low loss implies a higher Q. It can be defined as: Q = ω average energy stored average energy loss/second Q factor can be also defined in terms of resonance frequency f and bandwidth f of the resonator circuit, which is stated below f Q = (6) f A high Q factor results in a steep roll-off and narrow bandwidth of the resonator (see Fig-3) Transmitted Power in db 3 db f f Frequency Figure-3 Graph of Quality Factor General Theory of Coupling A general technique for designing coupled resonator filters is based on coupling coefficients of inter-coupled resonators and the external Q factors of the input and output resonators [] The external Q is characterized the external coupling between a microwave resonator and the external circuit, which is shown as Q ea and Qeb in Fig-4. 4
5 Figure-4 Block Diagram of Microwave Filter The coupling coefficient kij of coupled microwave resonators can be defined on the basis of the ratio of coupled energy to stored energy. It can be defined mathematically, k = E E E dv dv E + dv µ H µ H dv H dv µ H dv Electric Coupling Magnetic Coupling The interaction of the coupled resonator is mathematically described by the dot operation of their space vector fields, which allows the coupling to have either positive or negative sign. A positive sign would imply that the coupling enhances the stored energy of uncoupled resonators, whereas a negative sign would indicate a reduction. Therefore, the electric and magnetic coupling could either have same effect if they have the same sign, or have the opposite effect if their signs are opposite. [] All fields are determined at resonance 5
6 General Theory of Two Coupled Resonators The magnitude of the coupling coefficient defines the separation d of the two resonance peaks (see Fig-5). Normally the stronger coupling, the wider separation d of the two resonance peaks and deeper the trough in the middle. [] Figure-5 Resonant Response of Coupled Resonator Structure The coupling coefficient can be defined in terms of f and f, see Eq.7 k f f = (7) f + f f is the lower resonance frequency and f is the higher resonance frequency. Loss Tangent and Skin Depth Loss Tangent The loss tangent, tan δ, is used to determine whether conduction current or displacement current is more significant (see Fig-6). According to Ampere s Law, Conduction current density D H = J = σ E + jωe (8) t J c = σe and displacement current density = jωe. J d 6
7 Figure-6 Characteristics of Loss Tangent Loss tangent is defined as: Skin Depth tan δ = J j c d The amplitude of the electric field, E, in a metal, diminishes by a factor of /e, after travelling a distance of one skin depth (see Fig.4). The skin depth of a conductor is defined as: = σ ω (9) δ s = = = () α ωµσ π fµσ where α = ω = πf µ = µ µ r attenuation constant As seen in Eq (), when σ, δ that means most current in a good conductor occurs in an extremely thin region near the surface. s Figure-7 Characteristics of Material Skin Depth 7
8 In copper, aluminium and silver, the skin depth at various frequencies is shown in Table-. Frequency δ s in Copper δ s in Silver δ s in Aluminium 3 GHz.48 µ m.4 µ m.83 µ m Table- Skin Depth of Copper and Aluminium VS frequency Dielectric Materials Dielectric materials are continuing to play a very crucial role in microwave communication systems. These materials are key in the realisation of low-loss, temperature-stable resonators and filters for satellite and mobile equipment. At microwave frequencies, according to the classical dispersion theory 4, the dielectric constant r is unchanged, and the dielectric loss increases with frequency f. Therefore the product Q f can be used to describe these basic properties of each dielectric material. Some common used materials are shown in Table-. Materials r Q f (GHz) τ f ppm / ο C Descriptions MgTiO3 CaTiO 3 55, + ~ - Class I ceramic [3] capacitor material Ba ( Sn, Mg, Ta) O 5, +5 ~ -5 Extremely high Q [4] 3 Application at frequencies higher than GHz Ba ( Zn, Ta) O 3 68, +5 ~ -5 Extremely high Q [5] 3 Application at frequencies higher than GHz Ba ( Zr, Sn, Ta) O 3, +5 ~ -5 High Q [6] 3 Good temperature stability ( Zr, Sn) TiO 38 5, +5 ~ -5 High Q [7] 4 Ref Copper Silver 7 σ = σ = 6.3 σ = Aluminium (99.99%) 4 Reference [9] 7 8
9 Good temperature stability Ba Ti9O 4 3, + ~ + High K and high Q resonator material BaO PbO Nd O3 TiO 9 5, + ~ - Widely used at lower frequencies around GHz [8] [7] Table- Current Dielectric Materials II. METHODS The CST Modelling Package can be used to model an extremely wide range of electromagnetic components. Two solvers of this modelling package are mainly used in this work, these are Eigen Mode Solver and Frequency Domain Solver. Eigen mode solve were used to find the appropriate external Q factor and Frequency Domain Solver were used to find the appropriate coupling coefficient. III. CHEBYSHEV FILTER DESIGN Introduction Cellular radio has provided a significant driver for filter technology. This has resulted in various innovations in filter technology for base-stations. The global systems for mobile communications GSM-9 and GSM-8 are used in most part of the world: Europe, Middle East, Africa and Asia. More detailed descriptions of these two solver can be found in Appendix 9
10 Chebyshev Filter Specification Parameters Specifications Number of Filter Orders n = 3 Centre Frequency f c = 87 MHz Bandwidth Cut-off frequency f b =5MHz (4%) f c = 5MHz Passband Ripple α =. Stopband Attenuation α s db Table-3 Chebyshev Filter Specifications Required Parameter Values for the Specification A small Matlab program is utilised to find the appropriate external Q and coupling coefficient. These values were found (see Table-4). Pass Band Ripple S (db) N=3 Q ext kc kc.db Table-4 Required Parameter Value for the Set of Specification Full Chebyshev Filter Design Procedure can be found in Appendix
11 IV. CST SIMULATION ANALYSIS Activity : Find an appropriate external Q factor Figure-8 (a).87 GHz Dielectric Combline Resonator Configurations Figure-5 (b) Schematic of the Resonator Parameter Description Dimension(mm) L Length of the cavity 45 H Height of the cavity 65 W Width of the cavity 45 R Radius of the dielectric rod 5. C Length of the extended wire 35 d Length of the tuning probe 4 h Height of the dielectric rod 57.7 Table-8 Dimension Table of.87ghz DCR
12 For this set of Chebyshev filter specification, it is required a low external Q for the input (see Table-4), a.87ghz dielectric combline resonator has been designed with a piece of wire is attached at the end of the input coaxial cable(see Fig-8 b) to achieve lower external Q and stronger coupling at input. The dimensions of the resonator can be found in Table-8. At the required external Q value 54.49, the frequency response of the resonator is shown in Figure-9. Figure-9 Frequency Response of Single Resonator As seen in Fig-6, the resonance frequency is shifted around 7MHz (.4%) compared to the designed resonance frequency.87ghz. It is mainly due to the input coaxial cable and the piece of extension wire, which may cause extra capacitance in the two port system. Simulation Result is obtained from JDM Solver of CST(see Appendix )
13 V. REFERENCES [] High-Q dielectric combline resonator with wide spurious free performance Shen, G.; Budimir, D.; Microwave and Optoelectronics Conference, 3. IMOC 3. Proceedings of the 3 SBMO/IEEE MTT-S International Volume, -3 Sept. 3 Page(s):49-4 vol. [] Dielectric combline resonators and filters Chi Wang; Zaki, K.A.; Atia, A.E.; Dolan, T.G.; Microwave Theory and Techniques, IEEE Transactions on Volume 46, Issue, Part, Dec. 998 Page(s):5 56 [3] Microwave Dielectric Materials K.Wakino, M. Katsube, H. Tamura, T. Nishikawa, and Y. Ishikawa, IEE Four Joint Conv. Rec., 977, Paper 35 [4] High-Q dielectric resonator material for millimetre-wave frequency H. Tamura, D. A. Sagala, and K.Wakino, Proc. 3rd U.S.-Japan Seminar Dielectric Piezoelectric Ceram., 986, pp.69-7 [5] Ba(Zn,Ta)O3 ceramic with low dielectric loss S. Kawashima, M.Nishida, I. Ueda, and H.Ouchi J.Amer.Ceram. Soc., vol.66,pp.4-43, 983. [6] Improved high-q dielectric resonator with complex perovskite strcture H. Tamura, T.Konoike, and K.Wakino J.Amer.Ceram. Soc., vol.67,pp.c-59-6, 984. [7] Microwave characteristics of (Zr,Sn)TiO4 and BaO-PbO-NdO3-TiO K.Wakino, K.Minai, and H. Tamura J.Amer.Ceram. Soc., vol.67,pp.78-8, 984. [8] A new BaO-TiO compound with temperature-stable high permittivity and low microwave loss H.M. O Bryan, Jr., J. Thomoson, Jr., and J. K. Plourde, J.Amer.Ceram. Soc., vol.57, pp , 974 [9] Far infrared dielectric dispersion in BaTiO3, SrTiO3, and TiO W.G.Spitzer, R. C. Miller, D. A. Kleinman, and L.E. Howarth, Phys. Rev., vol.6, pp. 7-7, 96. [] Filter technologies for wireless base stations Mansour, R.R.; Microwave Magazine, IEEE Volume 5, Issue, Mar 4 Page(s):68-74 Digital Object Identifier.9/MMW [] Microwave Engineering David M Pozar [] Microstrip Filters For RF/Microwave Applications Jia-sheng Hong/M.J.Lancaster 3
Ceramic Waveguide Filters with Wide Spurious-Free Stopband Response
Progress In Electromagnetics Research M, Vol. 79, 23 31, 2019 Ceramic Waveguide Filters with Wide Spurious-Free Stopband Response Sharjeel Afridi 1, *, Ian Hunter 2, and Yameen Sandhu 1 Abstract This work
More informationA SIMPLE FOUR-ORDER CROSS-COUPLED FILTER WITH THREE TRANSMISSION ZEROS
Progress In Electromagnetics Research C, Vol. 8, 57 68, 29 A SIMPLE FOUR-ORDER CROSS-COUPLED FILTER WITH THREE TRANSMISSION ZEROS J.-S. Zhan and J.-L. Wang Xidian University China Abstract Generalized
More informationDIELECTRIC RESONATORS
Operating frequencies in wireless communications have shifted towards high frequency band, and thus frequencies higher than 1 GHz are now commonly utilized. In addition, the microwave frequency spectrum
More informationEP A1 (19) (11) EP A1 (12) EUROPEAN PATENT APPLICATION. (43) Date of publication: Bulletin 2006/40
(19) Europäisches Patentamt European Patent Office Office européen des brevets (12) EUROPEAN PATENT APPLICATION (11) EP 1 708 303 A1 (43) Date of publication: 04.10.2006 Bulletin 2006/40 (51) Int Cl.:
More informationQUASI-ELLIPTIC MICROSTRIP BANDSTOP FILTER USING TAP COUPLED OPEN-LOOP RESONATORS
Progress In Electromagnetics Research C, Vol. 35, 1 11, 2013 QUASI-ELLIPTIC MICROSTRIP BANDSTOP FILTER USING TAP COUPLED OPEN-LOOP RESONATORS Kenneth S. K. Yeo * and Punna Vijaykumar School of Architecture,
More informationFiltered Power Splitter Using Square Open Loop Resonators
Progress In Electromagnetics Research C, Vol. 64, 133 140, 2016 Filtered Power Splitter Using Square Open Loop Resonators Amadu Dainkeh *, Augustine O. Nwajana, and Kenneth S. K. Yeo Abstract A microstrip
More informationMicrostrip Filter Design
Practical Aspects of Microwave Filter Design and Realization IMS 5 Workshop-WMB Microstrip Filter Design Jia-Sheng Hong Heriot-Watt University Edinburgh, UK Outline Introduction Design considerations Design
More informationDesign of Duplexers for Microwave Communication Systems Using Open-loop Square Microstrip Resonators
International Journal of Electromagnetics and Applications 2016, 6(1): 7-12 DOI: 10.5923/j.ijea.20160601.02 Design of Duplexers for Microwave Communication Charles U. Ndujiuba 1,*, Samuel N. John 1, Taofeek
More informationDual Band Dielectric Resonator Filter (DBDRF) with Defected Ground Structure (DGS)
World Applied Sciences Journal 32 (4): 582-586, 2014 ISSN 1818-4952 IDOSI Publications, 2014 DOI: 10.5829/idosi.wasj.2014.32.04.114 Dual Band Dielectric Resonator Filter (DBDRF) with Defected Ground Structure
More informationTHE GENERALIZED CHEBYSHEV SUBSTRATE INTEGRATED WAVEGUIDE DIPLEXER
Progress In Electromagnetics Research, PIER 73, 29 38, 2007 THE GENERALIZED CHEBYSHEV SUBSTRATE INTEGRATED WAVEGUIDE DIPLEXER Han S. H., Wang X. L., Fan Y., Yang Z. Q., and He Z. N. Institute of Electronic
More informationDesign of four-pole chebyshev and quasi-elliptic Ka band dielectric resonator filter using higher order mode TE01(δ+1)
Design of four-pole chebyshev and quasi-elliptic Ka band dielectric resonator filter using higher order mode TE01(δ+1) Sujesh Dutta 1 and Dalveer Kaur 2 1 Department of Electronics and Communication Engg.,
More informationVERTICAL TRANSITION IN MULTILAYER MILLIMETER WAVE MODULE USING CIRCULAR CAVITY
Progress In Electromagnetics Research M, Vol. 5, 91 100, 2008 VERTICAL TRANSITION IN MULTILAYER MILLIMETER WAVE MODULE USING CIRCULAR CAVITY D. Wu, Y. Fan, M. Zhao, and Y. Zhang School of Electronic Engineering
More informationAS THE frequency spectrum becomes more crowded, specifications
IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, VOL. 57, NO. 3, MARCH 2009 667 An Inline Coaxial Quasi-Elliptic Filter With Controllable Mixed Electric and Magnetic Coupling Huan Wang, Student Member,
More informationLENGTH REDUCTION OF EVANESCENT-MODE RIDGE WAVEGUIDE BANDPASS FILTERS
Progress In Electromagnetics Research, PIER 40, 71 90, 2003 LENGTH REDUCTION OF EVANESCENT-MODE RIDGE WAVEGUIDE BANDPASS FILTERS T. Shen Advanced Development Group Hughes Network Systems Germantown, MD
More informationBandpass Filters Using Capacitively Coupled Series Resonators
8.8 Filters Using Coupled Resonators 441 B 1 B B 3 B N + 1 1 3 N (a) jb 1 1 jb jb 3 jb N jb N + 1 N (b) 1 jb 1 1 jb N + 1 jb N + 1 N + 1 (c) J 1 J J Z N + 1 0 Z +90 0 Z +90 0 Z +90 0 (d) FIGURE 8.50 Development
More informationNarrowband Combline Filter Design with ANSYS HFSS
Narrowband Combline Filter Design with ANSYS HFSS Daniel G. Swanson, Jr. DGS Associates, LLC Boulder, CO dan@dgsboulder.com www.dgsboulder.com Introduction N = 6 Inline, Cover Loaded, Combline Filter Single
More informationChapter-2 LOW PASS FILTER DESIGN 2.1 INTRODUCTION
Chapter-2 LOW PASS FILTER DESIGN 2.1 INTRODUCTION Low pass filters (LPF) are indispensable components in modern wireless communication systems especially in the microwave and satellite communication systems.
More informationThis is an author produced version of Miniaturized dielectric waveguide filters.
This is an author produced version of Miniaturized dielectric waveguide filters. White Rose Research Online URL for this paper: http://eprints.whiterose.ac.uk/88315/ Article: Sandhu, MY orcid.org/-3-381-8834
More informationΓ L = Γ S =
TOPIC: Microwave Circuits Q.1 Determine the S parameters of two port network consisting of a series resistance R terminated at its input and output ports by the characteristic impedance Zo. Q.2 Input matching
More informationDesign and Synthesis of Quasi Dual-mode, Elliptic Coaxial Filter
RADIOENGINEERING, VOL. 4, NO. 3, SEPTEMBER 15 795 Design and Synthesis of Quasi Dual-mode, Elliptic Coaxial Filter Sovuthy CHEAB, Peng Wen WONG Dept. of Electrical and Electronic Engineering, University
More informationMicrowave and optical systems Introduction p. 1 Characteristics of waves p. 1 The electromagnetic spectrum p. 3 History and uses of microwaves and
Microwave and optical systems Introduction p. 1 Characteristics of waves p. 1 The electromagnetic spectrum p. 3 History and uses of microwaves and optics p. 4 Communication systems p. 6 Radar systems p.
More informationDesign of Microstrip Coupled Line Bandpass Filter Using Synthesis Technique
Design of Microstrip Coupled Line Bandpass Filter Using Synthesis Technique 1 P.Priyanka, 2 Dr.S.Maheswari, 1 PG Student, 2 Professor, Department of Electronics and Communication Engineering Panimalar
More informationMODERN microwave communication systems require
IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, VOL. 54, NO. 2, FEBRUARY 2006 755 Novel Compact Net-Type Resonators and Their Applications to Microstrip Bandpass Filters Chi-Feng Chen, Ting-Yi Huang,
More informationSubminiature Multi-stage Band-Pass Filter Based on LTCC Technology Research
International Journal of Information and Electronics Engineering, Vol. 6, No. 2, March 2016 Subminiature Multi-stage Band-Pass Filter Based on LTCC Technology Research Bowen Li and Yongsheng Dai Abstract
More informationThis is a repository copy of A Novel Dielectric-Loaded Dual-Mode Cavity for Cellular Base Station Applications.
This is a repository copy of A Novel Dielectric-Loaded Dual-Mode Cavity for Cellular Base Station Applications. White Rose Research Online URL for this paper: http://eprints.whiterose.ac.uk/11661/ Version:
More informationDesign of a Compact and High Selectivity Tri-Band Bandpass Filter Using Asymmetric Stepped-impedance Resonators (SIRs)
Progress In Electromagnetics Research Letters, Vol. 44, 81 86, 2014 Design of a Compact and High Selectivity Tri-Band Bandpass Filter Using Asymmetric Stepped-impedance Resonators (SIRs) Jun Li *, Shan
More informationNarrowband Microstrip Filter Design With NI AWR Microwave Office
Narrowband Microstrip Filter Design With NI AWR Microwave Office Daniel G. Swanson, Jr. DGS Associates, LLC Boulder, CO dan@dgsboulder.com www.dgsboulder.com Narrowband Microstrip Filters There are many
More informationQUADRI-FOLDED SUBSTRATE INTEGRATED WAVEG- UIDE CAVITY AND ITS MINIATURIZED BANDPASS FILTER APPLICATIONS
Progress In Electromagnetics Research C, Vol. 23, 1 14, 2011 QUADRI-FOLDED SUBSTRATE INTEGRATED WAVEG- UIDE CAVITY AND ITS MINIATURIZED BANDPASS FILTER APPLICATIONS C. A. Zhang, Y. J. Cheng *, and Y. Fan
More informationA Compact Miniaturized Frequency Selective Surface with Stable Resonant Frequency
Progress In Electromagnetics Research Letters, Vol. 62, 17 22, 2016 A Compact Miniaturized Frequency Selective Surface with Stable Resonant Frequency Ning Liu 1, *, Xian-Jun Sheng 2, and Jing-Jing Fan
More informationElectrical Design of Narrow Band Filters. Giuseppe Macchiarella Polytechnic of Milan, Italy Electronic and Information Department
Electrical Design of Narrow Band Filters Giuseppe Macchiarella Polytechnic of Milan, Italy Electronic and Information Department Introduction The design of a narrow band microwave filter starts with the
More informationA NEW FREQUENCY SELECTIVE WINDOW FOR CONSTRUCTING WAVEGUIDE BANDPASS FILTERS WITH MULTIPLE ATTENUATION POLES
Progress In Electromagnetics Research C, Vol. 20, 139 153, 2011 A NEW FREQUENCY SELECTIVE WINDOW FOR CONSTRUCTING WAVEGUIDE BANDPASS FILTERS WITH MULTIPLE ATTENUATION POLES M. Tsuji and H. Deguchi Department
More informationCOMPACT MICROSTRIP BANDPASS FILTERS USING TRIPLE-MODE RESONATOR
Progress In Electromagnetics Research Letters, Vol. 35, 89 98, 2012 COMPACT MICROSTRIP BANDPASS FILTERS USING TRIPLE-MODE RESONATOR K. C. Lee *, H. T. Su, and M. K. Haldar School of Engineering, Computing
More informationTitle. Author(s)Futatsumori, Shunichi; Hikage, Takashi; Nojima, Tosh. CitationElectronics letters, 42(7): Issue Date
Title Microwave superconducting reaction-type transmitting Author(s)Futatsumori, Shunichi; Hikage, Takashi; Nojima, Tosh CitationElectronics letters, 42(7): 428-430 Issue Date 2006-03-30 Doc URL http://hdl.handle.net/2115/11333
More informationRectangular Patch Antenna to Operate in Flame Retardant 4 Using Coaxial Feeding Technique
International Journal of Electronics Engineering Research. ISSN 0975-6450 Volume 9, Number 3 (2017) pp. 399-407 Research India Publications http://www.ripublication.com Rectangular Patch Antenna to Operate
More informationA NOVEL DUAL-BAND PATCH ANTENNA FOR WLAN COMMUNICATION. E. Wang Information Engineering College of NCUT China
Progress In Electromagnetics Research C, Vol. 6, 93 102, 2009 A NOVEL DUAL-BAND PATCH ANTENNA FOR WLAN COMMUNICATION E. Wang Information Engineering College of NCUT China J. Zheng Beijing Electro-mechanical
More informationCOMPACT DESIGN AND SIMULATION OF LOW PASS MICROWAVE FILTER ON MICROSTRIP TRANSMISSION LINE AT 2.4 GHz
International Journal of Management, IT & Engineering Vol. 7 Issue 7, July 2017, ISSN: 2249-0558 Impact Factor: 7.119 Journal Homepage: Double-Blind Peer Reviewed Refereed Open Access International Journal
More informationH. Arab 1, C. Akyel 2
angle VIRTUAL TRANSMISSION LINE OF CONICAL TYPE COAXIALOPEN-ENDED PROBE FOR DIELECTRIC MEASUREMENT H. Arab 1, C. Akyel 2 ABSTRACT 1,2 Ecole Polytechnique of Montreal, Canada An improved virtually conical
More informationMicrostrip Filtering Structure with Optimized Group-Delay Response for Wireless Communications
Microstrip Filtering Structure with Optimized Group-Delay Response for Wireless Communications NICOLAE MILITARU, GEORGE LOJEWSKI Department of Telecommunications University POLITEHNICA of Bucharest 313
More informationCHAPTER 2 MICROSTRIP REFLECTARRAY ANTENNA AND PERFORMANCE EVALUATION
43 CHAPTER 2 MICROSTRIP REFLECTARRAY ANTENNA AND PERFORMANCE EVALUATION 2.1 INTRODUCTION This work begins with design of reflectarrays with conventional patches as unit cells for operation at Ku Band in
More informationProgress In Electromagnetics Research, Vol. 107, , 2010
Progress In Electromagnetics Research, Vol. 107, 101 114, 2010 DESIGN OF A HIGH BAND ISOLATION DIPLEXER FOR GPS AND WLAN SYSTEM USING MODIFIED STEPPED-IMPEDANCE RESONATORS R.-Y. Yang Department of Materials
More informationCircular Patch Antenna with CPW fed and circular slots in ground plane.
Circular Patch Antenna with CPW fed and circular slots in ground plane. Kangan Saxena, USICT, Guru Gobind Singh Indraprastha University, Delhi-75 ---------------------------------------------------------------------***---------------------------------------------------------------------
More informationBANDWIDTH ENHANCEMENT OF CIRCULAR MICROSTRIP ANTENNAS
BANDWIDTH ENHANCEMENT OF CIRCULAR MICROSTRIP ANTENNAS Ali Hussain Ali Yawer 1 and Abdulkareem Abd Ali Mohammed 2 1 Electronic and Communications Department, College of Engineering, Al- Nahrain University,
More informationFigure 1 The switched beam forming network.
THE DESIGN AND ANALYSIS OF FERRITE COMPONENTS FOR BEAM FORMING NETWORKS Imtiaz Khairuddin, ComDev Europe Ltd. ABSTRACT In the rapidly evolving global telecommunications industry, switching and routing
More informationA MODIFIED FRACTAL RECTANGULAR CURVE DIELECTRIC RESONATOR ANTENNA FOR WIMAX APPLICATION
Progress In Electromagnetics Research C, Vol. 12, 37 51, 2010 A MODIFIED FRACTAL RECTANGULAR CURVE DIELECTRIC RESONATOR ANTENNA FOR WIMAX APPLICATION R. K. Gangwar and S. P. Singh Department of Electronics
More information8 th Order Dielectric Resonator Filter with Three Asymmetric
Application Article CST AG 215 8 th Order Dielectric Resonator Filter with Three Asymmetric Transmission Zeroes The dielectric resonator filter (Figure 1) is a high-performance filter design which is well-suited
More informationTransformation of Generalized Chebyshev Lowpass Filter Prototype to Suspended Stripline Structure Highpass Filter for Wideband Communication Systems
Transformation of Generalized Chebyshev Lowpass Filter Prototype to Suspended Stripline Structure Highpass Filter for Wideband Communication Systems Z. Zakaria 1, M. A. Mutalib 2, M. S. Mohamad Isa 3,
More informationCritical Study of Open-ended Coaxial Sensor by Finite Element Method (FEM)
International Journal of Applied Science and Engineering 3., 4: 343-36 Critical Study of Open-ended Coaxial Sensor by Finite Element Method (FEM) M. A. Jusoha*, Z. Abbasb, M. A. A. Rahmanb, C. E. Mengc,
More informationUltra-Wideband Microstrip Antenna with Coupled Notch Circuit
Proceedings of the 5th European Conference on Antennas and Propagation (EUCAP) Ultra-Wideband Microstrip Antenna with Coupled Notch Circuit Marjan Mokhtaari and Jens Bornemann Department of Electrical
More informationPractical Measurements of Dielectric Constant and Loss for PCB Materials at High Frequency
8 th Annual Symposium on Signal Integrity PENN STATE, Harrisburg Center for Signal Integrity Practical Measurements of Dielectric Constant and Loss for PCB Materials at High Frequency Practical Measurements
More information[Makrariya* et al., 5(8): August, 2016] ISSN: IC Value: 3.00 Impact Factor: 4.116
IJESRT INTERNATIONAL JOURNAL OF ENGINEERING SCIENCES & RESEARCH TECHNOLOGY FIVE POLE OPTIMUM DISTRIBUTED HIGH PASS MICROWAVE FILTER: DESIGN ANALYSIS AND SIMULATION ON MICROSTRIP AT 2.4 GHZ Atul Makrariya*,
More informationMICROSTRIP AND WAVEGUIDE PASSIVE POWER LIMITERS WITH SIMPLIFIED CONSTRUCTION
Journal of Microwaves and Optoelectronics, Vol. 1, No. 5, December 1999. 14 MICROSTRIP AND WAVEGUIDE PASSIVE POWER IMITERS WITH SIMPIFIED CONSTRUCTION Nikolai V. Drozdovski & ioudmila M. Drozdovskaia ECE
More informationAnalysis of Microstrip Circuits Using a Finite-Difference Time-Domain Method
Analysis of Microstrip Circuits Using a Finite-Difference Time-Domain Method M.G. BANCIU and R. RAMER School of Electrical Engineering and Telecommunications University of New South Wales Sydney 5 NSW
More informationPRACTICAL BROADBAND MICROSTRIP FILTER DESIGN AND IMPLEMENTATION METHOD
IJRRAS 9 (3) December 20 www.arpapress.com/volumes/vol9issue3/ijrras_9_3_0.pdf PRACTICAL BROADBAND MICROSTRIP FILTER DESIGN AND IMPLEMENTATION METHOD Abdullah Eroglu, Tracy Cline & Bill Westrick Indiana
More informationInternational Journal of Advance Engineering and Research Development DESIGN OF DUPLEXER USING MICROSTRIP FILTERS FOR LOW POWER GSM APPLICATIONS
Scientific Journal of Impact Factor(SJIF): 3.134 International Journal of Advance Engineering and Research Development Volume 2,Issue 4, April -2015 e-issn(o): 2348-4470 p-issn(p): 2348-6406 DESIGN OF
More informationExercise problems of topic 1: Transmission line theory and typical waveguides
Exercise problems of topic 1: Transmission line theory and typical waveguides Return your answers in the contact sessions on a paper; either handwritten or typescripted. You can return them one by one.
More informationPerformance Analysis of Different Ultra Wideband Planar Monopole Antennas as EMI sensors
International Journal of Electronics and Communication Engineering. ISSN 09742166 Volume 5, Number 4 (2012), pp. 435445 International Research Publication House http://www.irphouse.com Performance Analysis
More informationCompact Microstrip Narrow Bandpass Filter with Good Selectivity and Wide Stopband Rejection for Ku-Band Applications
Progress In Electromagnetics Research Letters, Vol. 57, 55 59, 2015 Compact Microstrip Narrow Bandpass Filter with Good Selectivity and Wide Stopband Rejection for Ku-Band Applications Haibo Jiang 1, 2,
More informationDESIGN OF COMPACT MICROSTRIP LOW-PASS FIL- TER WITH ULTRA-WIDE STOPBAND USING SIRS
Progress In Electromagnetics Research Letters, Vol. 18, 179 186, 21 DESIGN OF COMPACT MICROSTRIP LOW-PASS FIL- TER WITH ULTRA-WIDE STOPBAND USING SIRS L. Wang, H. C. Yang, and Y. Li School of Physical
More informationH.-W. Wu Department of Computer and Communication Kun Shan University No. 949, Dawan Road, Yongkang City, Tainan County 710, Taiwan
Progress In Electromagnetics Research, Vol. 107, 21 30, 2010 COMPACT MICROSTRIP BANDPASS FILTER WITH MULTISPURIOUS SUPPRESSION H.-W. Wu Department of Computer and Communication Kun Shan University No.
More informationEC6503 Transmission Lines and WaveguidesV Semester Question Bank
UNIT I TRANSMISSION LINE THEORY A line of cascaded T sections & Transmission lines General Solution, Physicasignificance of the equations 1. Derive the two useful forms of equations for voltage and current
More informationHigh Permittivity Design of Rectangular and Cylindrical Dielectric Resonator Antenna for C-Band Applications
, pp.34-41 http://dx.doi.org/10.14257/astl.2017.147.05 High Permittivity Design of Rectangular and Cylindrical Dielectric Resonator Antenna for C-Band Applications Dr.K.Srinivasa Naik 1, Darimisetti Sai
More informationII. Microstrip Resonator Design Fig. 1 shows the cross sectional view of the coupled microstrip line resonator.
Volume 3, Issue 6, June 2013 ISSN: 2277 128X International Journal of Advanced Research in Computer Science and Software Engineering Research Paper Available online at: www.ijarcsse.com Finite Element
More informationThis is a repository copy of A TE11 Dual-Mode Monoblock Dielectric Resonator Filter.
This is a repository copy of A TE11 Dual-Mode Monoblock Dielectric Resonator Filter. White Rose Research Online URL for this paper: http://eprints.whiterose.ac.uk/108600/ Version: Accepted Version Proceedings
More informationDesign and simulation of compact Hairpin Bandpass filter
Design and simulation of compact Hairpin Bandpass filter 1 Mrs. Sudha Surwase, Department of Electronics & Telecommunication SKNSCOE, Sinhgad college of engg. Korti, Pandharpur Solapur India, 2 Miss.Suchita
More informationExperiment 3 - Printed Filters.
Experiment 3 - Printed Filters. S. Levy, Z. Ibragimov, D. Ackerman and H. Matzner. May 3, 2009 Contents 1 Background Theory 2 1.1 EllipticFilterDesign... 2 1.1.1 ImpedanceandFrequencyScaling... 3 1.1.2
More informationA Folded SIR Cross Coupled WLAN Dual-Band Filter
Progress In Electromagnetics Research Letters, Vol. 45, 115 119, 2014 A Folded SIR Cross Coupled WLAN Dual-Band Filter Zi Jian Su *, Xi Chen, Long Li, Bian Wu, and Chang-Hong Liang Abstract A compact cross-coupled
More informationFull wave analysis of non-radiative dielectric waveguide modulator for the determination of electrical equivalent circuit
PRAMANA c Indian Academy of Sciences Vol. 71, No. 1 journal of July 2008 physics pp. 65 75 Full wave analysis of non-radiative dielectric waveguide modulator for the determination of electrical equivalent
More informationThe Design of Microstrip Six-Pole Quasi-Elliptic Filter with Linear Phase Response Using Extracted-Pole Technique
IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, VOL. 49, NO. 2, FEBRUARY 2001 321 The Design of Microstrip Six-Pole Quasi-Elliptic Filter with Linear Phase Response Using Extracted-Pole Technique
More informationTHE DESIGN of microwave filters is based on
IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, VOL. 46, NO. 4, APRIL 1998 343 A Unified Approach to the Design, Measurement, and Tuning of Coupled-Resonator Filters John B. Ness Abstract The concept
More informationMERITS OF PARALLEL COUPLED BANDPASS FILTER OVER END COUPLED BANDPASS FILTER IN X BAND
International Journal of Electrical, Electronics and Data Counication, ISSN: 232-284 MERITS OF PARALLEL COUPLED BANDPASS FILTER OVER END COUPLED BANDPASS FILTER IN X BAND 1 INDER PAL SINGH, 2 PRAVEEN BHATT,
More informationUsing Pcb-Techniques And Dielectric Design Band Pass Filter Resonators For Ku - Band Applications
INTERNATIONAL JOURNAL OF TECHNOLOGY ENHANCEMENTS AND EMERGING ENGINEERING RESEARCH, VOL 2, ISSUE 5 149 Using Pcb-Techniques And Dielectric Design Band Pass Filter Resonators For Ku - Band Applications
More informationA Rectangular Ring Shaped Ultra-Wide Band Pass Filter Design
A Rectangular Ring Shaped Ultra-Wide Band Pass Filter Design Pankaj Jain Shabahat Hasan Deepak Raghuvanshi Deptt. of Microwave & Milimeter Deptt. of Microwave & Milimeter Deptt. of Digital Communication
More informationAnalysis of Substrate Integrated Waveguide (SIW) Resonator and Design of Miniaturized SIW Bandpass Filter
3 INTL JOURNAL OF ELECTRONICS AND TELECOMMUNICATIONS, 017, VOL. 63, NO. 3, PP. 55-60 Manuscript received June 4, 016; revised June, 017. DOI: 10.1515/eletel-017-0034 Analysis o Substrate Integrated Waveguide
More informationDUAL-MODE SPLIT MICROSTRIP RESONATOR FOR COMPACT NARROWBAND BANDPASS FILTERS. Federal University, Krasnoyarsk , Russia
Progress In Electromagnetics Research C, Vol. 23, 151 160, 2011 DUAL-MODE SPLIT MICROSTRIP RESONATOR FOR COMPACT NARROWBAND BANDPASS FILTERS V. V. Tyurnev 1, * and A. M. Serzhantov 2 1 Kirensky Institute
More informationMulti-pole Microstrip Directional Filters for Multiplexing Applications
Multi-pole Microstrip Directional Filters for Multiplexing Applications Humberto Lobato-Morales, Alonso Corona-Chávez, J. Luis Olvera-Cervantes, D.V.B. Murthy Instituto Nacional de Astrofísica, Óptica
More informationCompact Microwave Dual-band Bandpass Filter Design
Compact Microwave Dual-band Bandpass Filter Design Yahui Wu, BEng, MSc Doctor of Philosophy University of York Electronic Engineering September 2017 Abstract The modern wireless communication systems require
More informationComparison and Analysis of Microstrip Low Pass Filter using DGS technique for WLAN Applications
Comparison and Analysis of Microstrip Low Pass Filter using DGS technique for WLAN Applications Aanshi Jain 1, Anjana Goen 2 1 M.Tech Scholar, Dept. of ECE, Rustam Ji Institute of Technology, Tekanpur,
More informationDepartment of Electrical Engineering University of North Texas
Name: Shabuktagin Photon Khan UNT ID: 10900555 Instructor s Name: Professor Hualiang Zhang Course Name: Antenna Theory and Design Course ID: EENG 5420 Email: khan.photon@gmail.com Department of Electrical
More informationMicrowave Engineering
Microwave Circuits 1 Microwave Engineering 1. Microwave: 300MHz ~ 300 GHz, 1 m ~ 1mm. a. Not only apply in this frequency range. The real issue is wavelength. Historically, as early as WWII, this is the
More information264 MHz HTS Lumped Element Bandpass Filter
IEICE SAITO TRANS. et al: 264 ELECTRON., MHz HTS LUMPED VOL. E83-C, ELEMENT NO. 1 JANUARY BANDPASS 2 FILTER 15 PAPER Special Issue on Superconductive Devices and Systems 264 MHz HTS Lumped Element Bandpass
More informationHigh Power, Magnet-free, Waveguide Based Circulator Using Angular-Momentum Biasing of a Resonant Ring
SLAC-R-1080 High Power, Magnet-free, Waveguide Based Circulator Using Angular-Momentum Biasing of a Resonant Ring Jeffrey Neilson and Emilio Nanni August 18, 2017 Prepared for Calabazas Creek Research,
More informationBandpass-Response Power Divider with High Isolation
Progress In Electromagnetics Research Letters, Vol. 46, 43 48, 2014 Bandpass-Response Power Divider with High Isolation Long Xiao *, Hao Peng, and Tao Yang Abstract A novel wideband multilayer power divider
More informationTunable Microstrip Low Pass Filter with Modified Open Circuited Stubs
International Journal of Electronic Engineering and Computer Science Vol. 2, No. 3, 2017, pp. 11-15 http://www.aiscience.org/journal/ijeecs Tunable Microstrip Low Pass Filter with Modified Open Circuited
More informationDIELECTRIC filters have been widely used in modern
IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, VOL. 62, NO. 2, FEBRUARY 2014 275 A Mode Monoblock Dielectric Filter Xi Wang and Ke-Li Wu, Fellow, IEEE Abstract A novel monoblock dielectric filter
More information3. LITERATURE REVIEW. 3.1 The Planar Inverted-F Antenna.
3. LITERATURE REVIEW The commercial need for low cost and low profile antennas for mobile phones has drawn the interest of many researchers. While wire antennas, like the small helix and quarter-wavelength
More informationDEFECTED MICROSTRIP STRUCTURE BASED BANDPASS FILTER
DEFECTED MICROSTRIP STRUCTURE BASED BANDPASS FILTER M.Subhashini, Mookambigai college of engineering, Tamilnadu, India subha6688@gmail.com ABSTRACT A defected microstrip structure (DMS) unit is proposed
More informationA. Kumar and S. Sharma Department of Electronics and Communication Engineering S. D. D. Institute of Engineering and Technology Barwala, India
Progress In Electromagnetics Research, PIER 69, 47 54, 2007 MEASUREMENT OF DIELECTRIC CONSTANT AND LOSS FACTOR OF THE DIELECTRIC MATERIAL AT MICROWAVE FREQUENCIES A. Kumar and S. Sharma Department of Electronics
More informationON THE STUDY OF LEFT-HANDED COPLANAR WAVEGUIDE COUPLER ON FERRITE SUBSTRATE
Progress In Electromagnetics Research Letters, Vol. 1, 69 75, 2008 ON THE STUDY OF LEFT-HANDED COPLANAR WAVEGUIDE COUPLER ON FERRITE SUBSTRATE M. A. Abdalla and Z. Hu MACS Group, School of EEE University
More informationPARALLEL coupled-line filters are widely used in microwave
2812 IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, VOL. 53, NO. 9, SEPTEMBER 2005 Improved Coupled-Microstrip Filter Design Using Effective Even-Mode and Odd-Mode Characteristic Impedances Hong-Ming
More informationDESIGN AND FABRICATION OF CAVITY RESONATORS
&2@?%3 DESIGN AND FABRICATION OF CAVITY RESONATORS CHAPTER 3 DESIGN AND FABRICATION OFCAVITY RESONATORS 3.1 Introduction In the cavity perturbation techniques, generally rectangular or cylindrical waveguide
More informationProjects in microwave theory 2017
Electrical and information technology Projects in microwave theory 2017 Write a short report on the project that includes a short abstract, an introduction, a theory section, a section on the results and
More informationDESIGN OF BPF USING INTERDIGITAL BANDPASS FILTER ON CENTER FREQUENCY 3GHZ.
DESIGN OF BPF USING INTERDIGITAL BANDPASS FILTER ON CENTER FREQUENCY 3GHZ. 1 Anupma Gupta, 2 Vipin Gupta 1 Assistant Professor, AIMT/ECE Department, Gorgarh, Indri (Karnal), India Email: anupmagupta31@gmail.com
More informationSubstrate Integrated Waveguide (SIW) Bandpass Filter with Novel Microstrip-CPW- SIW Input Coupling
393 Substrate Integrated Waveguide (SIW) Bandpass Filter with Novel Microstrip-CPW- SIW Input Coupling Augustine O. Nwajana, Amadu Dainkeh, Kenneth S. K. Yeo Electrical and Electronic Engineering Department,
More informationInput Impedance, VSWR and Return Loss of a Conformal Microstrip Printed Antenna for TM 10 mode Using Polymers as a Substrate Materials
Input Impedance, VSWR and Return Loss of a Conformal Microstrip Printed Antenna for TM 10 mode Using Polymers as a Substrate Materials Ali Elrashidi 1, Khaled Elleithy 2, Hassan Bajwa 3 1 Department of
More informationDesign of a UHF Pyramidal Horn Antenna Using CST
Volume 114 No. 7 2017, 447-457 ISSN: 1311-8080 (printed version); ISSN: 1314-3395 (on-line version) url: http://www.ijpam.eu ijpam.eu Design of a UHF Pyramidal Horn Antenna Using CST Biswa Ranjan Barik
More informationLecture 4. Maximum Transfer of Power. The Purpose of Matching. Lecture 4 RF Amplifier Design. Johan Wernehag Electrical and Information Technology
Johan Wernehag, EIT Lecture 4 RF Amplifier Design Johan Wernehag Electrical and Information Technology Design of Matching Networks Various Purposes of Matching Voltage-, Current- and Power Matching Design
More informationOn the Development of Tunable Microwave Devices for Frequency Agile Applications
PIERS ONLINE, VOL. 4, NO. 7, 28 726 On the Development of Tunable Microwave Devices for Frequency Agile Applications Jia-Sheng Hong and Young-Hoon Chun Department of Electrical, Electronic and Computer
More informationFour Element Multilayer Cylindrical Dielectric Resonator Antenna Excited by a Coaxial Probe for Wideband Applications.
Four Element Multilayer Cylindrical Dielectric Resonator Antenna Excited by a Coaxial Probe for Wideband Applications. Raghvendra Kumar Chaudhary 1, Kumar Vaibhav Srivastava 2, Animesh Biswas 3 Department
More informationMiniaturized Multi-mode Bandpass Filters Using Waveguide cavity
Forum for Electromagnetic Research Methods and Application Technologies (FERMAT) Miniaturized Multi-mode Bandpass Filters Using Waveguide cavity Reporter:Sai Wai Wong School of Electronic and Information
More informationRF AND MICROWAVE ENGINEERING
RF AND MICROWAVE ENGINEERING FUNDAMENTALS OF WIRELESS COMMUNICATIONS Frank Gustrau Dortmund University of Applied Sciences and Arts, Germany WILEY A John Wiley & Sons, Ltd., Publication Preface List of
More information