Modified wideband Marchand balun with tunable power division ratio and constant phase

Zhu, He and Abbosh, Amin M. (2016) Modified wideband Marchand balun with tunable power division ratio and constant phase. IEEE Microwave and Wireless Components Letters, 26 5: 319-321. doi:10.1109/LMWC.2016.2548479


Author Zhu, He
Abbosh, Amin M.
Title Modified wideband Marchand balun with tunable power division ratio and constant phase
Journal name IEEE Microwave and Wireless Components Letters   Check publisher's open access policy
ISSN 1531-1309
1558-1764
Publication date 2016-05-09
Year available 2016
Sub-type Article (original research)
DOI 10.1109/LMWC.2016.2548479
Open Access Status Not Open Access
Volume 26
Issue 5
Start page 319
End page 321
Total pages 3
Place of publication Piscataway, NJ, United States
Publisher Institute of Electrical and Electronics Engineers
Collection year 2017
Language eng
Abstract A balun with a wide tunable power division ratio and constant phase across a wide frequency band is presented. The proposed design is a modification of the traditional Marchand balun with a varactor and series resistor loaded at the central point of the two connected pairs of coupled lines. The varactor is used to control the power division ratio at two output ports, whereas the resistor is used to stabilize the power division across a wide operational bandwidth. The achievable power division ratio and differential phase are investigated for different band ranges. A prototype is designed, fabricated, and tested. The results indicate a tuning power ratio range from 1:1 to 3.5:1 across 80% fractional bandwidth (1.2-2.8 GHz) with more than 10 dB return loss and less than 9 ° differential phase.
Keyword Balun
Marchand balun
Tunable balun
Tunable power division ratio
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: HERDC Pre-Audit
School of Information Technology and Electrical Engineering Publications
 
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