Compact rat-race coupler using shunt-stub-based artificial transmission lines

Chao Hsiung Tseng; Hsiang Ju Chen

doi:10.1109/LMWC.2008.2005225

Compact rat-race coupler using shunt-stub-based artificial transmission lines

Chao Hsiung Tseng^*, Hsiang Ju Chen

^*Corresponding author for this work

National Yang Ming Chiao Tung University

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

103 Scopus citations

Abstract

In this letter, a compact rat-race coupler is developed using shunt-stub-based artificial transmission lines (SSB ATLs). A conventional quarter-wavelength microstrip can be equivalent to an SSB ATL realized by two series high-impedance microstrips with the high-impedance branch-type shunt stubs. The circuit configuration of the SSB ATL is beneficial to miniaturize the circuit size using the folding technique. By integrating six SSB ATLs, a compact rat-race coupler can be implemented with a 3.9% circuit size of the conventional one. The measured results of the developed rat-race coupler are in a good agreement with the simulated results by full-wave electromagnetic simulator.

Original language	English
Article number	4666747
Pages (from-to)	734-736
Number of pages	3
Journal	IEEE Microwave and Wireless Components Letters
Volume	18
Issue number	11
DOIs	https://doi.org/10.1109/LMWC.2008.2005225
State	Published - Nov 2008

Keywords

Artificial transmission line (ATL)
Miniaturization
Rat-race coupler

Access to Document

10.1109/LMWC.2008.2005225

Cite this

@article{16ac3ec515c8476e9c399d3d87801625,

title = "Compact rat-race coupler using shunt-stub-based artificial transmission lines",

abstract = "In this letter, a compact rat-race coupler is developed using shunt-stub-based artificial transmission lines (SSB ATLs). A conventional quarter-wavelength microstrip can be equivalent to an SSB ATL realized by two series high-impedance microstrips with the high-impedance branch-type shunt stubs. The circuit configuration of the SSB ATL is beneficial to miniaturize the circuit size using the folding technique. By integrating six SSB ATLs, a compact rat-race coupler can be implemented with a 3.9% circuit size of the conventional one. The measured results of the developed rat-race coupler are in a good agreement with the simulated results by full-wave electromagnetic simulator.",

keywords = "Artificial transmission line (ATL), Miniaturization, Rat-race coupler",

author = "Tseng, {Chao Hsiung} and Chen, {Hsiang Ju}",

year = "2008",

month = nov,

doi = "10.1109/LMWC.2008.2005225",

language = "English",

volume = "18",

pages = "734--736",

journal = "IEEE Microwave and Wireless Components Letters",

issn = "1531-1309",

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

number = "11",

}

TY - JOUR

T1 - Compact rat-race coupler using shunt-stub-based artificial transmission lines

AU - Tseng, Chao Hsiung

AU - Chen, Hsiang Ju

PY - 2008/11

Y1 - 2008/11

N2 - In this letter, a compact rat-race coupler is developed using shunt-stub-based artificial transmission lines (SSB ATLs). A conventional quarter-wavelength microstrip can be equivalent to an SSB ATL realized by two series high-impedance microstrips with the high-impedance branch-type shunt stubs. The circuit configuration of the SSB ATL is beneficial to miniaturize the circuit size using the folding technique. By integrating six SSB ATLs, a compact rat-race coupler can be implemented with a 3.9% circuit size of the conventional one. The measured results of the developed rat-race coupler are in a good agreement with the simulated results by full-wave electromagnetic simulator.

AB - In this letter, a compact rat-race coupler is developed using shunt-stub-based artificial transmission lines (SSB ATLs). A conventional quarter-wavelength microstrip can be equivalent to an SSB ATL realized by two series high-impedance microstrips with the high-impedance branch-type shunt stubs. The circuit configuration of the SSB ATL is beneficial to miniaturize the circuit size using the folding technique. By integrating six SSB ATLs, a compact rat-race coupler can be implemented with a 3.9% circuit size of the conventional one. The measured results of the developed rat-race coupler are in a good agreement with the simulated results by full-wave electromagnetic simulator.

KW - Artificial transmission line (ATL)

KW - Miniaturization

KW - Rat-race coupler

UR - http://www.scopus.com/inward/record.url?scp=55649097317&partnerID=8YFLogxK

U2 - 10.1109/LMWC.2008.2005225

DO - 10.1109/LMWC.2008.2005225

M3 - Article

AN - SCOPUS:55649097317

SN - 1531-1309

VL - 18

SP - 734

EP - 736

JO - IEEE Microwave and Wireless Components Letters

JF - IEEE Microwave and Wireless Components Letters

IS - 11

M1 - 4666747

ER -

Compact rat-race coupler using shunt-stub-based artificial transmission lines

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this