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An extremely compact dual-band branch-line coupler

✍ Scribed by Shih-Yi Yuan; Miin-Shyue Shiau; Shry-Sann Liao; Pou-Tou Sun; Chia-Tai Ho

Book ID
102519830
Publisher
John Wiley and Sons
Year
2007
Tongue
English
Weight
479 KB
Volume
49
Category
Article
ISSN
0895-2477

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✦ Synopsis

Abstract

In this article, an extremely compact dual‐band branch‐line coupler is presented. The miniaturized design saved 74% circuit dimension comparing to the original dual‐band branch‐line coupler. Several design methods and miniaturization techniques were involved in this study to achieve the criteria, including stepped‐impedance resonators (SIR) structure, symmetrical T‐shape structure, bended and folded of transmission lines, and the coupling effect of microstrip‐lines. Good agreements between the simulated and measured results were also observed. Furthermore, no lumped elements, via‐holes, and bonding wires are necessary for this miniaturized coupler, making it very useful for the modern wireless communication systems. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 3011–3014, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22895

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