NDLI: Design of Compensated Coupled-Stripline 3-dB Directional Couplers, Phase Shifters, and Magic-T's

Content Provider	IEEE Xplore Digital Library
Author	Gruszczynski, S. Wincza, K. Sachse, K.
Copyright Year	1963
Abstract	The problem of discontinuities in broadband multisection coupled-stripline 3-dB directional couplers, phase shifters, high-pass tapered-line 3-dB directional couplers, and magic-T's, regarding the connections of coupled and terminating signal lines, is comprehensively investigated in this paper for the first time. The equivalent circuit of these discontinuities proposed in Part I has been used for accurate modeling of the broadband multisection and ultra-broadband high-pass coupled-stripline circuits. It has been shown that parasitic reactances, which result from the connections of signal and coupled lines, severely deteriorate the return losses and the isolation of such circuits and also-in case of tapered-line directional couplers-the coupling responses. Moreover, it has been proven theoretically and experimentally that these discontinuity effects can be substantially reduced by introducing compensating shunt capacitances in a number of cross sections of coupled and signal lines. Results of measurements carried out for various designed and manufactured coupled-line circuits have been very promising and have proven the efficiency of the proposed broadband compensation technique. The theoretical and measured data are given for the following coupled-stripline circuits: a decade-bandwidth asymmetric three-section 3-dB directional coupler, a decade-bandwidth three-section phase-shifter compensator, and a high-pass asymmetric tapered-line 3-dB coupler
Sponsorship	IEEE Microwave Theory and Techniques Society
Starting Page	3501
Ending Page	3507
Page Count	7
File Size	668113
File Format	PDF
ISSN	00189480
Volume Number	54
Issue Number	9
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-09-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Coupling circuits Directional couplers Phase shifters Frequency Bandwidth Microstrip Signal design Equivalent circuits Transmission line discontinuities Electromagnetic coupling technique of capacitive compensation Asymmetric multisection coupled-line directional couplers asymmetric tapered-line directional couplers broadband magic-T's discontinuities multisection coupled-line phase shifters and compensators
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electrical and Electronic Engineering Radiation

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Design of Compensated Coupled-Stripline 3-dB Directional Couplers, Phase Shifters, and Magic-T's—Part I: Single-Section Coupled-Line Circuits

Design of a broadband low-loss coupled-line multisection symmetrical 3-dB directional coupler in suspended stripline technology

Broadband multisection asymmetric 8.34-dB directional coupler with improved directivity

Compensated broadband five-section directional coupler for application in butler matrices

Broadband 4 × 4 Butler matrices utilizing tapered-coupled-line directional couplers

Design of Broadband Asymmetric Tapered-Line 3-dB Directional Couplers

Broadband 4 $times$ 4 Butler Matrices as a Connection of Symmetrical Multisection Coupled-Line 3-dB Directional Couplers and Phase Correction Networks

Ultrabroadband 4 × 4 Butler matrix with the use of multisection coupled-line directional couplers and phase shifters

Investigations of broadband multilayered coupled line couplers

Design of Compensated Coupled-Stripline 3-dB Directional Couplers, Phase Shifters, and Magic-T's—Part II: Broadband Coupled-Line Circuits

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