Vol. 25

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2011-06-30

A Novel Dual-Band Π-Shaped Branch-Line Coupler with Stepped-Impedance Stubs

By Nan Zheng, Liang Zhou, and Wen-Yan Yin
Progress In Electromagnetics Research Letters, Vol. 25, 11-20, 2011
doi:10.2528/PIERL11032915

Abstract

A novel compact branch-line coupler operating in two arbitrary frequencies is proposed, analyzed and designed. Stepped-impedance stubs are used in the branch-line coupler to achieve dual-band applications. Parameters of the structure are chosen and provided for design guidelines. Broader operating frequency ratios and compactness are achievable. For the purpose of validation, a microstrip coupler operating at 2.4/5.2 GHz is fabricated and measured.

Citation


Nan Zheng, Liang Zhou, and Wen-Yan Yin, "A Novel Dual-Band Π-Shaped Branch-Line Coupler with Stepped-Impedance Stubs," Progress In Electromagnetics Research Letters, Vol. 25, 11-20, 2011.
doi:10.2528/PIERL11032915
http://jpier.org/PIERL/pier.php?paper=11032915

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