A compact slow-wave microstrip branch-line coupler with high performance

Jianpeng Wang; Bing-Zhong Wang; Yong-Xin Guo; L. C. Ong; Shaoqiu Xiao

doi:10.1109/LMWC.2007.899307

A compact slow-wave microstrip branch-line coupler with high performance

Jianpeng Wang, Bing-Zhong Wang, Yong-Xin Guo, L. C. Ong, Shaoqiu Xiao

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

157 Citations (Scopus)

Abstract

One compact slow-wave microstrip branch-line coupler is presented. The new structure not only effectively reduces the occupied area to 28% of the conventional branch-line coupler at 2.0 GHz, but also has high second harmonic suppression performance. The measured results indicate a bandwidth of more than 200 MHz has been achieved while the phase difference between S₂₁ and S₃₁ is within 90° ± 1°. Furthermore, the measured insertion loss is comparable to that of a conventional branch-line coupler. The new coupler can be easily implemented by using the standard printed-circuit- board etching processes and is very useful for wireless communication systems. © 2007 IEEE.

Original language	English
Article number	4266851
Pages (from-to)	501-503
Journal	IEEE Microwave and Wireless Components Letters
Volume	17
Issue number	7
DOIs	https://doi.org/10.1109/LMWC.2007.899307
Publication status	Published - Jul 2007
Externally published	Yes

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Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

Research Keywords

Branch-line coupler
Microstrip
Slow-wave structures

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title = "A compact slow-wave microstrip branch-line coupler with high performance",

abstract = "One compact slow-wave microstrip branch-line coupler is presented. The new structure not only effectively reduces the occupied area to 28% of the conventional branch-line coupler at 2.0 GHz, but also has high second harmonic suppression performance. The measured results indicate a bandwidth of more than 200 MHz has been achieved while the phase difference between S21 and S31 is within 90° ± 1°. Furthermore, the measured insertion loss is comparable to that of a conventional branch-line coupler. The new coupler can be easily implemented by using the standard printed-circuit- board etching processes and is very useful for wireless communication systems. {\textcopyright} 2007 IEEE.",

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AU - Ong, L. C.

AU - Xiao, Shaoqiu

N1 - Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

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AB - One compact slow-wave microstrip branch-line coupler is presented. The new structure not only effectively reduces the occupied area to 28% of the conventional branch-line coupler at 2.0 GHz, but also has high second harmonic suppression performance. The measured results indicate a bandwidth of more than 200 MHz has been achieved while the phase difference between S21 and S31 is within 90° ± 1°. Furthermore, the measured insertion loss is comparable to that of a conventional branch-line coupler. The new coupler can be easily implemented by using the standard printed-circuit- board etching processes and is very useful for wireless communication systems. © 2007 IEEE.

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JO - IEEE Microwave and Wireless Components Letters

JF - IEEE Microwave and Wireless Components Letters

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A compact slow-wave microstrip branch-line coupler with high performance

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