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

✍ Scribed by Ung-Hee Park; Jong-Sik Lim

Book ID: 102522196
Publisher: John Wiley and Sons
Year: 2005
Tongue: English
Weight: 170 KB
Volume: 47
Category: Article
ISSN: 0895-2477
DOI: 10.1002/mop.21162

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✦ Synopsis

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°p hase 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 Ϯ0.5 dB and a phase imbalance of Ϯ3.4°with an insertion loss of Ϫ1.3 dB over frequencies ranging from 700 to 2500 MHz.

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