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An In-Phase Output K!a -Band Traveling-Wave Power Divider/Combiner Using Double Ridge-Waveguide Couplers

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4 Author(s)
Qing-Xin Chu ; Sch. of Electron. & Inf. Eng., South China Univ. of Technol., Guangzhou, China ; Zhi-Yong Kang ; Qiong-Sen Wu ; Da-Yi Mo

A Ka-band traveling-wave power divider/combiner, which is based on double ridge-waveguide couplers, is presented. The in-phase output, which is a challenge of the waveguide-based traveling-wave power divider, is achieved by optimizing the equivalent circuit of the proposed structure. The novel ridge-waveguide coupler has advantages of low loss, high power capability, and easy assembly. Finally, the proposed power divider/combiner is simulated, fabricated, and measured. A 15-dB measured return-loss bandwidth at the center frequency of 35 GHz is over 28%, a maximum transmission coefficients amplitude imbalance of ±1 dB is achieved, and the phase deviation is less than ± 12° from 32 to 39 GHz.

Published in:

Microwave Theory and Techniques, IEEE Transactions on  (Volume:61 ,  Issue: 9 )

Date of Publication:

Sept. 2013

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