Ka频段微带四次谐波混频器

介绍了一种Ka频段的微带四次谐波混频器的混频原理和设计方法。该混频器主要由波导-微带过渡,输入、输出滤波器以及匹配网络和反向并联混频二极管对组成。根据计算机辅助设计软件的仿真结果,在介电常数为2.22,厚度为0.254 mm的RF-Duroid 5880介质基片上制作了电路。当射频频率为34.2~35.2 GHz,本振频率为8.525~8.775 GHz,中频频率为100 MHz时,测得的变频损耗小于10.5 dB,其中最佳值为8.5 dB。

Ka Band Microstrip 4th Harmonic Mixer

This paper introduces the mixed theory and design method of a microstrip 4th harmonic mixer worked at Ka band. The mixer mainly consists of a waveguide-to-microstrip transition, input and output filters, matching networks and an antiparallel diode pair. According to the simulation result of computer aided design software, the integrated circuit is fabricated using RF-Duroid 5880 with 0.254 mm thick and dielectric constant εr of 2.22. The conversion loss of 8.5 dB to 10.5 dB is achived with the IF fixed at 100 MHz, the RF ranged from 34.2 GHz to 35.2 GHz and the LO ranged from 8.525 GHz to 8.775 GHz in measurement.