Journal of Siberian Federal University. Engineering & Technologies / The Investigation of Coupling between Matching Circuit and Input Resonators of Channels in a Microstrip Diplexer

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Issue
Journal of Siberian Federal University. Engineering & Technologies. 2020 13 (7)
Authors
Afonin, Aleksey O.; Leksikov, Andrey A.; Leksikov, Alexander A.; Govorun, Ilya V.; Serzhantov, Alexey M.; Ugryumov, Andrey V.
Contact information
Afonin, Aleksey O.: Kirensky Institute of Physics SB RAS Krasnoyarsk, Russian Federation; ; Leksikov, Andrey A.: Kirensky Institute of Physics SB RAS Krasnoyarsk, Russian Federation; Leksikov, Alexander A.: Kirensky Institute of Physics SB RAS Krasnoyarsk, Russian Federation; Govorun, Ilya V.: Kirensky Institute of Physics SB RAS Krasnoyarsk, Russian Federation; Serzhantov, Alexey M.: Siberian Federal University Krasnoyarsk, Russian Federation; Ugryumov, Andrey V.: Kirensky Institute of Physics SB RAS Krasnoyarsk, Russian Federation
Keywords
microstrip diplexer; matching circuit; regular non-resonant segment of microstrip line; coupling coefficients; quasi-TEM approach
Abstract

This paper deals with investigation of the coupling coefficients between the matching circuit and the input resonators of channels in a microstrip diplexer. Diplexer channels are two-section filters, and matching circuit is regular non-resonant segment of a microstrip line placed between input resonators of channels. The common port is connected to outer end of the segment and its second end is opened. Research was carried out theoretically using a computer program developed on the basis of mathematical expressions obtained by means of one-dimensional models and quasi-static approximation. The results show that a value of coupling is quite large and the use of the matching circuit in a form of a non-resonant segment of a microstrip line allows to design diplexers with wide fractional bandwidth of the channels

Pages
871–881
DOI
10.17516/1999-494X-0272
Paper at repository of SibFU
https://elib.sfu-kras.ru/handle/2311/137808

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