Abstract This paper designed, fabricated and measured a THz fourth-harmonic conversion system based on GaAs Schottky barrier diode. Using the fourth-harmonic mixing method, the LO frequency is a quarter of (RF-IF) frequency and is corresponding to W band. Furthermore, the generators only need to supply LO signal of Ku band and IF signal of C band due to the sextupler in LO chain and quadrupler in IF chain. Based on the measurement results, this conversion system could generate 364–380 GHz signal with a typical conversion loss of 25.5 dB. The presented conversion system extends the existing microwave generators to THz applications and offers a low-cost, simple and alternative solution for those who lacking of lower THz signal source.

中文翻译：

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一种将微波扩展到太赫兹波段的太赫兹四次谐波转换系统

摘要 本文设计、制作并测量了一种基于GaAs肖特基势垒二极管的太赫兹四次谐波转换系统。使用四次谐波混频方法，本振频率是（RF-IF）频率的四分之一，对应于W波段。此外，由于LO链中的六倍频和IF链中的四倍频，发生器只需要提供Ku波段的LO信号和C波段的IF信号。根据测量结果，该转换系统可以生成 364–380 GHz 信号，典型转换损耗为 25.5 dB。所提出的转换系统将现有的微波发生器扩展到太赫兹应用，并为缺乏低太赫兹信号源的人提供了一种低成本、简单和替代的解决方案。