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Realization of compact broadband rat-race coupler

Realization of compact broadband rat-race coupler
Realization of compact broadband rat-race coupler

In this article, a method to miniaturize the broadband rat-race couplers using microstrip nonuniform transmission lines (MNTLs) is presented. The proposed coupler features a compact size on a single circuit layer structure without reactive components and via-holes. The design formulas are developed using ABCD matrix and even-odd mode analysis. The theoretical analysis has been verified by measurement of the manufactured broadband MNTL rat-race coupler with center frequency of 1.35 GHz and 89% fractional bandwidth. The isolation, magnitude, imbalance and phase imbalance are less than -20 dB, 0.5 dB, and 4 degrees, respectively, within 0.75-1.95 GHz frequency bandwidth.

0920-5071
1708-1715
Taravati, S.
0026f25d-c919-4273-b956-8fe9795b31ce
Taravati, S.
0026f25d-c919-4273-b956-8fe9795b31ce

Taravati, S. (2012) Realization of compact broadband rat-race coupler. Journal of Electromagnetic Waves and Applications, 26 (13), 1708-1715. (doi:10.1080/09205071.2012.709955).

Record type: Article

Abstract

In this article, a method to miniaturize the broadband rat-race couplers using microstrip nonuniform transmission lines (MNTLs) is presented. The proposed coupler features a compact size on a single circuit layer structure without reactive components and via-holes. The design formulas are developed using ABCD matrix and even-odd mode analysis. The theoretical analysis has been verified by measurement of the manufactured broadband MNTL rat-race coupler with center frequency of 1.35 GHz and 89% fractional bandwidth. The isolation, magnitude, imbalance and phase imbalance are less than -20 dB, 0.5 dB, and 4 degrees, respectively, within 0.75-1.95 GHz frequency bandwidth.

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Published date: 2012

Identifiers

Local EPrints ID: 482591
URI: http://eprints.soton.ac.uk/id/eprint/482591
ISSN: 0920-5071
PURE UUID: 71943736-676e-4148-b681-3e442d8ac019
ORCID for S. Taravati: ORCID iD orcid.org/0000-0003-3992-0050

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Date deposited: 10 Oct 2023 17:00
Last modified: 06 Jun 2024 02:19

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Author: S. Taravati ORCID iD

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