WIDEBAND HARMONIC SUPPRESSED COMPACT RAT-RACE COUPLER USING TRIPLE STUB M-SHAPE UNIT

WIDEBAND HARMONIC SUPPRESSED COMPACT RAT-RACE COUPLER USING TRIPLE STUB M-SHAPE UNIT

A design of a compact wideband harmonic suppressed rat-race coupler (RRC) is presented in this paper. The present coupler is obtained by replacing each quarter wave length transmission line of a conventional double section rat-race coupler with a triple stub M-shape unit. The M-shape unit with 3 stu...

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Veröffentlicht in:Progress in electromagnetics research. Letters 2021-01, Vol.96, p.81-90
Hauptverfasser: Reddy, Vuppuloori R.S, Velidi, Vamsi K, Rao, Bhima P
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Sprache:eng
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Design and construction
Engineering research
Mobile communication systems
Waveguide junctions
Wireless communication systems
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container_title Progress in electromagnetics research. Letters
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creator Reddy, Vuppuloori R.S
Velidi, Vamsi K
Rao, Bhima P
description A design of a compact wideband harmonic suppressed rat-race coupler (RRC) is presented in this paper. The present coupler is obtained by replacing each quarter wave length transmission line of a conventional double section rat-race coupler with a triple stub M-shape unit. The M-shape unit with 3 stubs is used to enhance the bandwidth, suppress the harmonics, and reduce the size of the coupler. Design guidelines are established using the lossless transmission line model. Theoretical predictions are verified by fabricating a prototype coupler. The proposed double section RRC provides harmonic suppression up to seventh of operating frequency and 62.4% size reduction with wide bandwidth, which is useful for wireless communication systems.
doi_str_mv 10.2528/PIERL20113002
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subjects Design and construction
Engineering research
Mobile communication systems
Waveguide junctions
Wireless communication systems
title WIDEBAND HARMONIC SUPPRESSED COMPACT RAT-RACE COUPLER USING TRIPLE STUB M-SHAPE UNIT
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