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A novel compact branch-line coupler using four coupled transmission lines

โœ Scribed by Mehdi Nosrati; Salman Karbasi Valashani

Book ID
102516072
Publisher
John Wiley and Sons
Year
2008
Tongue
English
Weight
177 KB
Volume
50
Category
Article
ISSN
0895-2477

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โœฆ Synopsis

Abstract

A compact branch line coupler (BLC) using four coupled transmission lines is introduced. The loaded part of the proposed model has a same performance with a cascade two unit elements and it is equaled by a quarter wavelength line. The quarter wavelength lines of each branch in the conventional coupler are replaced by an equivalent circuit composed of a four coupled transmission line and two transmission lines. A compact branchโ€line coupler (BLC) is designed, analyzed, and tested using this technique. The size reduction is about 65% with comparable performance. The measurement results are in good agreement with the theoretical ones. ยฉ 2008 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 1712โ€“1714, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23460

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