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Journal Article A 700- to 2500-MHz Microstrip Balun using a Wilkinson Divider and 3-dB Quadrature Couplers
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Authors
Ung Hee Park, Jong Sik Lim
Issue Date
2005-11
Citation
Microwave and Optical Technology Letters, v.47, no.4, pp.333-335
ISSN
0895-2477
Publisher
John Wiley & Sons
Language
English
Type
Journal Article
DOI
https://dx.doi.org/10.1002/mop.21162
Abstract
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 180째 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 짹0.5 dB and a phase imbalance of 짹3.4째 with an insertion loss of 짹1.3 dB over frequencies ranging from 700 to 2500 MHz. © 2005 Wiley Periodicals, Inc.
KSP Keywords
Amplitude imbalance, Experimental measurements, High power, Microstrip balun, Phase Difference, Power splitting, Three-section, Wideband balun, Wilkinson divider, coaxial cable, low insertion loss