Design And Optimization Of Lumped Element Lcm Directional Couplers Couplers Image Impedances
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Design And Optimization Of Lumped Element Lcm Directional Couplers Couplers Image Impedances
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Author : EDMUND JOE TILLO (II)
language : en
Publisher:
Release Date : 1991
Design And Optimization Of Lumped Element Lcm Directional Couplers Couplers Image Impedances written by EDMUND JOE TILLO (II) and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991 with categories.
A VS FORTRAN compiler listing of the optimizer program is included.
Low Frequency Lumped Element Directional Couplers
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Author : Constantine Rodolph Jenkins
language : en
Publisher:
Release Date : 1971
Low Frequency Lumped Element Directional Couplers written by Constantine Rodolph Jenkins and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1971 with Directional couplers categories.
"Lumped element directional couplers are desirable at frequencies below the VHF range because they eliminate the large physical size necessary for the distributed element directional couplers. The purpose of this work is to describe the theory and design of such low frequency lumped element directional couplers. A model for the coupler is developed and the equations which describe it are derived. Scattering matrices for one and two section couplers are obtained. Computer solutions for three section couplers are presented. Experimental results for one, two, and three section couplers are presented and comparison with theory are made. Comparisons of theoretical and experimental work show that lumped element couplers are useful at low frequencies"--Abstract, leaf ii.
Broad Band Lumped Element Directional Coupler Design In The Vhf Uhf Band
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Author : David Lindsay Wills
language : en
Publisher:
Release Date : 1985
Broad Band Lumped Element Directional Coupler Design In The Vhf Uhf Band written by David Lindsay Wills and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1985 with categories.
Approach To The Design Of Asymmetric Coupled Line Directional Couplers With The Maximum Achievable Impedance Transformation Ratio
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Author : Krzysztof Wincza
language : en
Publisher:
Release Date : 2012
Approach To The Design Of Asymmetric Coupled Line Directional Couplers With The Maximum Achievable Impedance Transformation Ratio written by Krzysztof Wincza and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012 with categories.
Microwave Transmission Line Couplers
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Author : J. A. G. Malherbe
language : en
Publisher: Artech House Publishers
Release Date : 1988
Microwave Transmission Line Couplers written by J. A. G. Malherbe and has been published by Artech House Publishers this book supported file pdf, txt, epub, kindle and other format this book has been release on 1988 with Technology & Engineering categories.
A reference for the engineer interested in the design procedure. Covers practical considerations with complete design examples. The appendices contain two simple computer programs for the analysis of symmetrical three and four-port networks, and coupled-line configuration applications for replicatio
Design And Test Of A 415 Megahertz Ultra High Frequency Directional Coupler
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Author : Dawit Y. Naizghi
language : en
Publisher:
Release Date : 2014
Design And Test Of A 415 Megahertz Ultra High Frequency Directional Coupler written by Dawit Y. Naizghi and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014 with Directional couplers categories.
The following paper presents the design and test of a 415 MHz UHF directional coupler. A coupled line and lumped element directional couplers were designed and simulated using Advanced Design System (ADS) and optimized to achieve the required coupling coefficient and isolation. The S-parameter plots were generated to characterize the performance of the designed couplers.
A Network Approach To The Design Of Multi Line 2n Port Directional Couplers
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Author : Edward Ott
language : en
Publisher:
Release Date : 1965
A Network Approach To The Design Of Multi Line 2n Port Directional Couplers written by Edward Ott and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1965 with Electric lines categories.
Four port directional couplers which utilize coupled transmission lines have been studied by various investigators. The possibility is investigated of generalizing the four port result to achieve a 2n-port directional coupler. The viewpoint is essentially different from that used by previous investigators in that a networks approach is used throughout. The transfer impedance matrix of n+1 coupled lines is derived. Then the concept of a scattering matrix normalized to complex port impedances is introduced and the transfer scattering matrix of the coupled line system is found. Due to certain convenient properties of the scattering formalism it is possible to simply demonstrate that any system of n+1 coupled transmission lines is a potential 2n-port directional coupler. Equations for the terminating impedances which make the coupled line system act as a directional coupler are derived. The sensitivity of the device to a small change in these terminations is investigated. Also, the results of tests made on an experimental 6-port directional coupler are presented. (Author).
Design And Applications Of Multi Channel Directional Couplers
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Author : Ravi James McCosker
language : en
Publisher:
Release Date : 2011
Design And Applications Of Multi Channel Directional Couplers written by Ravi James McCosker and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with Optoelectronic devices categories.
The research in this thesis presents the analysis and design of multi-channel directional coupler structures for applications in optical sensing and electro-optic devices. The structures are analysed using supermodes and a potential limitation is identified with the discovery of the phenomenon of partial image revivals. A detailed analysis is presented along with one possible exploitation of this phenomenon with the design of a compact wavelength division multiplexer. The outcomes of the research include: i) an evanescent field optical sensor is designed using the multi-channel directional coupler structure; the design is based on the idea that the analyte to be measured infiltrates the spacing between the coupled waveguides so that the sensor can exploit the exponential dependence of the coupling on the analyte refractive index; ii) an optical chemical sensor is designed that uses silicon slot waveguides; the sensor exploits the high confinement of light in the slots, whilst retaining the exponential dependence of the coupling on the analyte refractive index; iii) discovery of the differential multi-channel directional coupler structure; and the design of a more efficient optical chemical sensor using this structure; iv) a multichannel directional coupler refractive index sensor is design in fiber, i.e. as a dual-core microstructured optical fiber; v) a compact wavelength division multiplexer for fluorescence sensing is designed; vi) electro-optic devices including an optical electric field sensor, switch and modulators are design using the multi-channel directional coupler structure and recent electro-optic materials.
The Optimum Design Of Multielement Directional Couplers
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Author : Leonard I. Kent
language : en
Publisher:
Release Date : 1954
The Optimum Design Of Multielement Directional Couplers written by Leonard I. Kent and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1954 with categories.
Broad Band Lumped Element Directional Coupler
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Author : Cletus A. Hoer
language : en
Publisher:
Release Date : 1972
Broad Band Lumped Element Directional Coupler written by Cletus A. Hoer and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1972 with categories.
The patent describes a broad-band lumped element directional coupler for measuring either the forward or reflected power in a coaxial transmission line. A resistive voltage divider is coupled to the center conductor of a transmission line with a capacitor to keep the phase of the voltage sampling circuit equal to the phase of the current sampling circuit. Capacitors shunting the resistors make the voltage ratio of the resistive voltage divider independent of frequency over a large frequency range. Directivity greater than 50 dB is achieved over a large frequency range for coupling ratios of 30, 40 and 50 dB.