Compact semilumped bandstop resonators using the capacitively loaded parallel-coupled microstrip line

Gab Lee Ju; Seong Lee Wu; Jong Ryu Jae; Kwan Moon Yeon; Ho Jang Joong; Chul Kim Ha; Chul Choi Hyun

doi:10.1002/mop.22135

Compact semilumped bandstop resonators using the capacitively loaded parallel-coupled microstrip line

Gab Lee Ju, Seong Lee Wu, Jong Ryu Jae, Kwan Moon Yeon, Ho Jang Joong, Chul Kim Ha, Chul Choi Hyun

School of Electronics Engineering

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

Compact semilumped bandstop resonators are simply designed using parallel-coupled microstrip line and lumped capacitors. The lumped capacitors loaded in between coupled lines increase the odd mode electrical length, and the frequency of transmission zero can be controlled by the lumped capacitors. For the accurate estimation of the transmission zero frequency, the four-port impedance parameter is derived using the even/odd mode analysis in an inhomogeneous dielectric medium. Two types of the bandstop resonators are proposed using the coupled line with the length of λ_g/8 (@2 GHz), and the calculated and measured results of transmission zero frequency are compared in 1-3 GHz ranges.

Original language	English
Pages (from-to)	367-369
Number of pages	3
Journal	Microwave and Optical Technology Letters
Volume	49
Issue number	2
DOIs	https://doi.org/10.1002/mop.22135
State	Published - Feb 2007

Keywords

Bandstop resonator
Capacitive loading
Parallel-coupled micro-strip line
Semilumped
Transmission zero

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10.1002/mop.22135

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title = "Compact semilumped bandstop resonators using the capacitively loaded parallel-coupled microstrip line",

abstract = "Compact semilumped bandstop resonators are simply designed using parallel-coupled microstrip line and lumped capacitors. The lumped capacitors loaded in between coupled lines increase the odd mode electrical length, and the frequency of transmission zero can be controlled by the lumped capacitors. For the accurate estimation of the transmission zero frequency, the four-port impedance parameter is derived using the even/odd mode analysis in an inhomogeneous dielectric medium. Two types of the bandstop resonators are proposed using the coupled line with the length of λg/8 (@2 GHz), and the calculated and measured results of transmission zero frequency are compared in 1-3 GHz ranges.",

keywords = "Bandstop resonator, Capacitive loading, Parallel-coupled micro-strip line, Semilumped, Transmission zero",

author = "Ju, {Gab Lee} and Wu, {Seong Lee} and Jae, {Jong Ryu} and Yeon, {Kwan Moon} and Joong, {Ho Jang} and Ha, {Chul Kim} and Hyun, {Chul Choi}",

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AU - Ju, Gab Lee

AU - Wu, Seong Lee

AU - Jae, Jong Ryu

AU - Yeon, Kwan Moon

AU - Joong, Ho Jang

AU - Ha, Chul Kim

AU - Hyun, Chul Choi

PY - 2007/2

Y1 - 2007/2

N2 - Compact semilumped bandstop resonators are simply designed using parallel-coupled microstrip line and lumped capacitors. The lumped capacitors loaded in between coupled lines increase the odd mode electrical length, and the frequency of transmission zero can be controlled by the lumped capacitors. For the accurate estimation of the transmission zero frequency, the four-port impedance parameter is derived using the even/odd mode analysis in an inhomogeneous dielectric medium. Two types of the bandstop resonators are proposed using the coupled line with the length of λg/8 (@2 GHz), and the calculated and measured results of transmission zero frequency are compared in 1-3 GHz ranges.

AB - Compact semilumped bandstop resonators are simply designed using parallel-coupled microstrip line and lumped capacitors. The lumped capacitors loaded in between coupled lines increase the odd mode electrical length, and the frequency of transmission zero can be controlled by the lumped capacitors. For the accurate estimation of the transmission zero frequency, the four-port impedance parameter is derived using the even/odd mode analysis in an inhomogeneous dielectric medium. Two types of the bandstop resonators are proposed using the coupled line with the length of λg/8 (@2 GHz), and the calculated and measured results of transmission zero frequency are compared in 1-3 GHz ranges.

KW - Bandstop resonator

KW - Capacitive loading

KW - Parallel-coupled micro-strip line

KW - Semilumped

KW - Transmission zero

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JO - Microwave and Optical Technology Letters

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Compact semilumped bandstop resonators using the capacitively loaded parallel-coupled microstrip line

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Keywords

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