A Ka band microstrip to waveguide transition using a quasi-triangle probe

作者：Li, Lei; Li, Jianxing; Wei, Xiaoyong^*; Zhang, Anxue; Ma, Hanqing

来源：International Journal of RF and Microwave Computer-Aided Engineering, 2017, 27(8): e21124.

DOI：10.1002/mmce.21124

• MMIC
• quasi-triangle probe
• ridged waveguide
• semiring antenna
• transitions

In this article, a new Ka band microstrip to waveguide transition with combination of electric and magnetic coupling is introduced by using a quasi-triangle structure. Consequently, the length of the proposed transition has been significantly diminished. A back-to-back prototype was fabricated based on the optimized dimensions to validate the design concept. The measured and simulated results are in a good alignment. The experimental results show that the return loss is better than 14.8 dB across the frequency range of 32-40 GHz with an insertion loss of lower than 0.9 dB. The conversion efficiency for the single transition, therefore, is larger than 90.5%. Because of its broad operation bandwidth, low insertion loss, and compact size, the proposed embedded transition could find wide applications in most modern miniaturized MMIC devices and systems.

• 出版日期2017-10
• 单位西安交通大学