A 700- to 2500-MHz microstrip balun using a Wilkinson divider and 3-dB quadrature couplers

A simple microstrip wideband balun with low insertion loss for high‐power operation is proposed. The balun is fabricated using one Wilkinson divider and two 3‐dB quadrature couplers. A Wilkinson divider with a three‐section structure is used for power splitting. A 180° phase difference is obtained b...

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Bibliographic Details
Published in:Microwave and optical technology letters 2005-11, Vol.47 (4), p.333-335
Main Authors: Park, Ung-Hee, Lim, Jong-Sik
Format: Article
Language:English
Subjects:
balun
microstrip balun
wideband balun
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Summary:A simple microstrip wideband balun with low insertion loss for high‐power operation is proposed. The balun is fabricated using one Wilkinson divider and two 3‐dB quadrature couplers. A Wilkinson divider with a three‐section structure is used for power splitting. A 180° phase difference is obtained by using two quadrature couplers with a twisted‐pair coaxial cable. Experimental measurements show that the fabricated balun has an amplitude imbalance of ±0.5 dB and a phase imbalance of ±3.4° with an insertion loss of −1.3 dB over frequencies ranging from 700 to 2500 MHz. © 2005 Wiley Periodicals, Inc. Microwave Opt Technol Lett 47: 333–335, 2005; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.21162
ISSN:0895-2477
1098-2760
DOI:10.1002/mop.21162