A compact Ka-band broadband waveguide-based traveling-wave spatial power combiner with low loss symmetric coupling structure

作者：Kang, Zhiyong; Chu, Qingxin; Wu, Qiongsen^*

来源：Progress in Electromagnetics Research Letters, 2013, 36: 181-190.

DOI：10.2528/PIERL12111311

• Back-structure
• Broadband waveguides
• Micro-strips
• Power-combining efficiency
• Return loss bandwidth
• Spatial power combiner
• Symmetric coupling
• Traveling wave

A compact Ka-band broadband waveguide-based traveling- wave spatial power combiner is presented. The low loss micro-strip probes are symmetrically inserted into both broadwalls of waveguide, quadrupling the coupling ways but the insertion loss increases little. The measured 16 dB return-loss bandwidth of the eight-way back-to- back structure is from 30 GHz to 39.4 GHz (more than 25%) and the insertion loss is less than 1 dB, which predicts the power-combining efficiency is higher than 90%.

• 出版日期2013
• 单位华南理工大学