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COMPACT COUPLER WITH TWO WORKING BANDWIDTH

Denis A. Letavin

First published: 2019-06-20https://doi.org/10.5593/sgem2019/6.1/s24.011View metrics

Abstract

Directional couplers implemented on two pairwise identical segments of the transmission line, have only one working bandwidth. In order to organize the performance of the structure on two ranges or more, it is necessary to make design changes to the standard device. For example, for operation at two frequencies, idle plumes are added to the design of the coupler. However, this has further increased the dimensions of the coupler, especially at low frequencies, and in some cases the design may be practically unsuitable for use in some radio systems. For this reason, in this paper we considered the design of a miniature coupler with two working frequencies of 0.8 and 1.7 GHz. The miniaturization of the structure was carried out by replacing microstrip sections with their equivalent counterparts in the form of low-pass filters. Due to the asymmetric implementation of filters, and the location of their protruding elements in the inner part of the coupler, it was possible to reduce the dimensions of the coupler by 68.9%. At the same time, the frequency bands of the compact device have decreased by about 2 times. However, it is worth noting that due to miniaturization it is possible to save the material used for the manufacture of such devices.

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Publication details

Title
COMPACT COUPLER WITH TWO WORKING BANDWIDTH
Authors
Denis A. Letavin
Proceedings
SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 19th International Multidisciplinary Scientific GeoConference SGEM2019, Nano, Bio, Green and Space: Technologies for Sustainable Future
Publisher
STEF92 Technology
Year
2019
Pages
85-92
SWS Citekey
Letavin2019248592
ISSN
1314-2704
ISBN
978-619-7408-88-1
Language
en
Publication type
Conference Paper
Keywords
materialmicrostrip linedielectricsubstrateminiaturization
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