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2011-06-20

A Compact Dual-Band Coupled-Line Balun with Tapped Open-Ended Stubs

By Jin Shao, Hualiang Zhang, Chang Chen, Song Tan, and Kevin Chen
Progress In Electromagnetics Research C, Vol. 22, 109-122, 2011
doi:10.2528/PIERC11050205

Abstract

This paper presents a novel structure for compact dual-band balun design. The proposed structure is based on modified Marchand (with the fourth port shorted). To achieve the desired dual-band operation, two additional open-ended stubs are added to the two balanced ports of the modified Marchand balun. Explicit design equations are then derived using even-odd mode analysis. Finally, to verify the design concept, a microstrip balun operating at 0.9/2 GHz are fabricated on Duroid RO3210 printed circuit board. Measurement results are in good agreement with the theoretical predictions.

Citation


Jin Shao, Hualiang Zhang, Chang Chen, Song Tan, and Kevin Chen, "A Compact Dual-Band Coupled-Line Balun with Tapped Open-Ended Stubs," Progress In Electromagnetics Research C, Vol. 22, 109-122, 2011.
doi:10.2528/PIERC11050205
http://www.jpier.org/PIERC/pier.php?paper=11050205

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