Broadband microstrip impedance transformer

Jen Tsai Kuo; Yu Hsien Chang; Shyh Jong Chung

doi:10.1109/IEEE-IWS.2016.7585399

Broadband microstrip impedance transformer

Jen Tsai Kuo, Yu Hsien Chang, Shyh Jong Chung

Department of Electronic Engineering

National Yang Ming Chiao Tung University

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

3 Scopus citations

Abstract

A broadband impedance transformer is proposed for microstrip realization and to release the tight gap size (30 pm) required for coupled-stripline. Design curves of the transformer are obtained by solving the analytical equations derived from the transmission line theory. Two transformers are fabricated and measured. One is designed for a 1:2 ratio and return loss better than 30 dB over a fractional bandwidth Δ = 68%, and the other is a 1:2.8 transformer with |S11| < -25 dB over a bandwidth of Δ = 71%. In realization, the metal traces are folded so that the circuit sizes are less than λ/8×λ/8. Good agreement between measured and simulation is obtained.

Original language	English
Title of host publication	2016 IEEE MTT-S International Wireless Symposium, IWS 2016
Publisher	Institute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)	9781509006960
DOIs	https://doi.org/10.1109/IEEE-IWS.2016.7585399
State	Published - 06 10 2016
Event	2016 IEEE MTT-S International Wireless Symposium, IWS 2016 - Shanghai, China Duration: 14 03 2016 → 16 03 2016

Publication series

Name	2016 IEEE MTT-S International Wireless Symposium, IWS 2016

Conference

Conference	2016 IEEE MTT-S International Wireless Symposium, IWS 2016
Country/Territory	China
City	Shanghai
Period	14/03/16 → 16/03/16

Bibliographical note

Publisher Copyright:
© 2016 IEEE.

Keywords

Coupled-line
impedance matching
microstrip
reflection zero
transformer

Access to Document

10.1109/IEEE-IWS.2016.7585399

Cite this

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title = "Broadband microstrip impedance transformer",

abstract = "A broadband impedance transformer is proposed for microstrip realization and to release the tight gap size (30 pm) required for coupled-stripline. Design curves of the transformer are obtained by solving the analytical equations derived from the transmission line theory. Two transformers are fabricated and measured. One is designed for a 1:2 ratio and return loss better than 30 dB over a fractional bandwidth Δ = 68%, and the other is a 1:2.8 transformer with |S11| < -25 dB over a bandwidth of Δ = 71%. In realization, the metal traces are folded so that the circuit sizes are less than λ/8×λ/8. Good agreement between measured and simulation is obtained.",

keywords = "Coupled-line, impedance matching, microstrip, reflection zero, transformer",

author = "Kuo, {Jen Tsai} and Chang, {Yu Hsien} and Chung, {Shyh Jong}",

note = "Publisher Copyright: {\textcopyright} 2016 IEEE.; 2016 IEEE MTT-S International Wireless Symposium, IWS 2016 ; Conference date: 14-03-2016 Through 16-03-2016",

year = "2016",

month = oct,

day = "6",

doi = "10.1109/IEEE-IWS.2016.7585399",

language = "英语",

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publisher = "Institute of Electrical and Electronics Engineers Inc.",

booktitle = "2016 IEEE MTT-S International Wireless Symposium, IWS 2016",

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Kuo, JT, Chang, YH & Chung, SJ 2016, Broadband microstrip impedance transformer. in 2016 IEEE MTT-S International Wireless Symposium, IWS 2016., 7585399, 2016 IEEE MTT-S International Wireless Symposium, IWS 2016, Institute of Electrical and Electronics Engineers Inc., 2016 IEEE MTT-S International Wireless Symposium, IWS 2016, Shanghai, China, 14/03/16. https://doi.org/10.1109/IEEE-IWS.2016.7585399

Broadband microstrip impedance transformer. / Kuo, Jen Tsai; Chang, Yu Hsien; Chung, Shyh Jong.
2016 IEEE MTT-S International Wireless Symposium, IWS 2016. Institute of Electrical and Electronics Engineers Inc., 2016. 7585399 (2016 IEEE MTT-S International Wireless Symposium, IWS 2016).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - Broadband microstrip impedance transformer

AU - Kuo, Jen Tsai

AU - Chang, Yu Hsien

AU - Chung, Shyh Jong

PY - 2016/10/6

Y1 - 2016/10/6

N2 - A broadband impedance transformer is proposed for microstrip realization and to release the tight gap size (30 pm) required for coupled-stripline. Design curves of the transformer are obtained by solving the analytical equations derived from the transmission line theory. Two transformers are fabricated and measured. One is designed for a 1:2 ratio and return loss better than 30 dB over a fractional bandwidth Δ = 68%, and the other is a 1:2.8 transformer with |S11| < -25 dB over a bandwidth of Δ = 71%. In realization, the metal traces are folded so that the circuit sizes are less than λ/8×λ/8. Good agreement between measured and simulation is obtained.

AB - A broadband impedance transformer is proposed for microstrip realization and to release the tight gap size (30 pm) required for coupled-stripline. Design curves of the transformer are obtained by solving the analytical equations derived from the transmission line theory. Two transformers are fabricated and measured. One is designed for a 1:2 ratio and return loss better than 30 dB over a fractional bandwidth Δ = 68%, and the other is a 1:2.8 transformer with |S11| < -25 dB over a bandwidth of Δ = 71%. In realization, the metal traces are folded so that the circuit sizes are less than λ/8×λ/8. Good agreement between measured and simulation is obtained.

KW - Coupled-line

KW - impedance matching

KW - microstrip

KW - reflection zero

KW - transformer

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M3 - 会议稿件

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T3 - 2016 IEEE MTT-S International Wireless Symposium, IWS 2016

BT - 2016 IEEE MTT-S International Wireless Symposium, IWS 2016

PB - Institute of Electrical and Electronics Engineers Inc.

T2 - 2016 IEEE MTT-S International Wireless Symposium, IWS 2016

Y2 - 14 March 2016 through 16 March 2016

ER -

Broadband microstrip impedance transformer

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Bibliographical note

Keywords

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