Critical components in 0.14 THz communication systems

TL;DR

This paper discusses the design and performance of critical components like subharmonic mixers and filters in a 0.14 THz wireless communication system, demonstrating optimized conversion loss and low insertion loss.

Contribution

It introduces a newly developed system setup with specific designs for subharmonic mixers and silicon micromachined filters, providing performance metrics and fabrication results.

Findings

Optimal conversion loss of 8.2 dB for the 140 GHz SHM

Fabricated filters with insertion losses below 0.5 dB

Design insights for enhancing 0.14 THz communication systems

Abstract

In the super-heterodyne terahertz communication system, the proper design of the critical components like mixers and filters are of great importance for enhancing its performance. In this work, some issues on our newly developed system setup design for 0.14 THz wireless communications and the key components subharmonic mixer (SHM) based on Schottky diode, as well as silicon micromachined bandpass rectangular waveguide filters are presented. According to ADS simulation, the optimum conversion loss of the 140 GHz SHM is around 8.2 dB. And the silicon-micromachined rectangular waveguide filters have been fabricated and the measured lowset insertion losses are lower than 0.5 dB.