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Progress In Electromagnetics Research Letters
ISSN: 1937-6480
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A NOVEL DUAL-BAND Π-SHAPED BRANCH-LINE COUPLER WITH STEPPED-IMPEDANCE STUBS

By N. Zheng, L. Zhou, and W.-Y. Yin

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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:
N. Zheng, L. Zhou, and W.-Y. 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

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