A New Synthesis and Design Approach of a Complex Termination Impedance Bandpass Filter

Phirun Kim; Yongchae Jeong

doi:10.1109/TMTT.2019.2910110

A New Synthesis and Design Approach of a Complex Termination Impedance Bandpass Filter

Phirun Kim
, Yongchae Jeong^*

^*Corresponding author for this work

Division of Electronic Engineering

Jeonbuk National University

Research output: Contribution to journal › Journal article › peer-review

17 Scopus citations

Abstract

A new synthesis for the design of a bandpass filter (BPF) with arbitrary real and/or complex termination impedances is presented in this paper. The proposed BPF can be terminated with arbitrary complex termination impedances simply by adding series transmission lines (TLs) to the first and the last coupled resonators. For design freedom, the characteristic impedances of the additional TLs can be chosen arbitrarily. Moreover, the proposed filter can be designed in either evenor odd-ordered stages using a λ/4 stepped impedance resonator (SIR). For the validation of the proposed filter, two- and three-stage λ/4 SIR BPFs with Z_S = 30 + j10 Ω, Z_L = 50 Ω, and Z_S = 50 Ω, Z_L = 100+ j100 Ω, respectively, were designed and fabricated at the center frequency (f₀) of 2.6 GHz. The measured results are consistent with the simulation results.

Original language	English
Article number	8697136
Pages (from-to)	2346-2354
Number of pages	9
Journal	IEEE Transactions on Microwave Theory and Techniques
Volume	67
Issue number	6
DOIs	https://doi.org/10.1109/TMTT.2019.2910110
State	Published - 2019.06

Keywords

Bandpass filter (BPF)
complex impedance
coupled line
stepped-impedance resonator (SIR)
T-type network

Quacquarelli Symonds(QS) Subject Topics

Engineering - Electrical & Electronic
Engineering - Petroleum
Physics & Astronomy

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10.1109/TMTT.2019.2910110

Cite this

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title = "A New Synthesis and Design Approach of a Complex Termination Impedance Bandpass Filter",

abstract = "A new synthesis for the design of a bandpass filter (BPF) with arbitrary real and/or complex termination impedances is presented in this paper. The proposed BPF can be terminated with arbitrary complex termination impedances simply by adding series transmission lines (TLs) to the first and the last coupled resonators. For design freedom, the characteristic impedances of the additional TLs can be chosen arbitrarily. Moreover, the proposed filter can be designed in either evenor odd-ordered stages using a λ/4 stepped impedance resonator (SIR). For the validation of the proposed filter, two- and three-stage λ/4 SIR BPFs with ZS = 30 + j10 Ω, ZL = 50 Ω, and ZS = 50 Ω, ZL = 100+ j100 Ω, respectively, were designed and fabricated at the center frequency (f0) of 2.6 GHz. The measured results are consistent with the simulation results.",

keywords = "Bandpass filter (BPF), complex impedance, coupled line, stepped-impedance resonator (SIR), T-type network",

author = "Phirun Kim and Yongchae Jeong",

note = "Publisher Copyright: {\textcopyright} 2019 IEEE.",

year = "2019",

month = jun,

doi = "10.1109/TMTT.2019.2910110",

language = "English",

volume = "67",

pages = "2346--2354",

journal = "IEEE Transactions on Microwave Theory and Techniques",

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number = "6",

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TY - JOUR

T1 - A New Synthesis and Design Approach of a Complex Termination Impedance Bandpass Filter

AU - Kim, Phirun

AU - Jeong, Yongchae

PY - 2019/6

Y1 - 2019/6

N2 - A new synthesis for the design of a bandpass filter (BPF) with arbitrary real and/or complex termination impedances is presented in this paper. The proposed BPF can be terminated with arbitrary complex termination impedances simply by adding series transmission lines (TLs) to the first and the last coupled resonators. For design freedom, the characteristic impedances of the additional TLs can be chosen arbitrarily. Moreover, the proposed filter can be designed in either evenor odd-ordered stages using a λ/4 stepped impedance resonator (SIR). For the validation of the proposed filter, two- and three-stage λ/4 SIR BPFs with ZS = 30 + j10 Ω, ZL = 50 Ω, and ZS = 50 Ω, ZL = 100+ j100 Ω, respectively, were designed and fabricated at the center frequency (f0) of 2.6 GHz. The measured results are consistent with the simulation results.

AB - A new synthesis for the design of a bandpass filter (BPF) with arbitrary real and/or complex termination impedances is presented in this paper. The proposed BPF can be terminated with arbitrary complex termination impedances simply by adding series transmission lines (TLs) to the first and the last coupled resonators. For design freedom, the characteristic impedances of the additional TLs can be chosen arbitrarily. Moreover, the proposed filter can be designed in either evenor odd-ordered stages using a λ/4 stepped impedance resonator (SIR). For the validation of the proposed filter, two- and three-stage λ/4 SIR BPFs with ZS = 30 + j10 Ω, ZL = 50 Ω, and ZS = 50 Ω, ZL = 100+ j100 Ω, respectively, were designed and fabricated at the center frequency (f0) of 2.6 GHz. The measured results are consistent with the simulation results.

KW - Bandpass filter (BPF)

KW - complex impedance

KW - coupled line

KW - stepped-impedance resonator (SIR)

KW - T-type network

UR - https://www.scopus.com/pages/publications/85067099485

U2 - 10.1109/TMTT.2019.2910110

DO - 10.1109/TMTT.2019.2910110

M3 - Journal article

AN - SCOPUS:85067099485

SN - 0018-9480

VL - 67

SP - 2346

EP - 2354

JO - IEEE Transactions on Microwave Theory and Techniques

JF - IEEE Transactions on Microwave Theory and Techniques

IS - 6

M1 - 8697136

ER -

A New Synthesis and Design Approach of a Complex Termination Impedance Bandpass Filter

Abstract

Keywords

Quacquarelli Symonds(QS) Subject Topics

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