High efficiency and broadband excitation of leaky mode in microstrip structures

Y Qian,C.K.C Tzuang,B.C.C Chang,T Itoh,K.C Chen

doi:10.1109/mwsym.1999.780215

High efficiency and broadband excitation of leaky mode in microstrip structures

Y Qian, C.K.C Tzuang + Show 3 more

https://doi.org/10.1109/mwsym.1999.780215

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Publication Date: Jun 13, 1999

Citations: 43

Affiliation: National Yang Ming Chiao Tung University, University of California, Los Angeles

#Higher Order Leaky Mode #High Efficiency Excitation + Show 8 more

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Abstract

This paper reports a novel technique for high efficiency and broadband excitation of the first higher order leaky mode in microstrips. A uniplanar microstrip-to-CPS transition is employed to launch the odd leaky mode, and the mode purity is enhanced by suppressing the even fundamental mode using an optimized mode suppressor. An X-band prototype demonstrates excellent mode conversion efficiency as predicted by simulations. A record bandwidth of 20.2% is achieved for a microstrip leaky-wave source based on this newly proposed structure.

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