A Wideband CMOS On-Chip Terahertz Frequency Detector with Slow Wave Structure

Doyoon Kim, Kiryong Song, Richard Al Hadi, Heekang Son, Jungsoo Kim, Yan Zhao, Jae Sung Rieh

Research output: Contribution to journalArticlepeer-review


This letter presents a wideband on-chip frequency detector implemented in a 65-nm CMOS technology. The frequency detector is composed of a fish bone like transmission line and a series of distributed power detectors with a parallel-to-serial readout circuit. A slow wave structure is employed in the transmission line for improved area efficiency. The frequency is extracted from the waveform profile of the standing wave formed along the transmission line, which is obtained by the local power levels of the wave measured by the detectors. The extracted frequencies showed a good agreement with the injected signal frequency for a measured frequency range of 120-360 GHz. The chip size is $400\times 180\,\,\mu \text{m}^{2}$ excluding probing pads.

Original languageEnglish
Article number9393381
Pages (from-to)600-603
Number of pages4
JournalIEEE Microwave and Wireless Components Letters
Issue number6
Publication statusPublished - 2021 Jun


  • CMOS integrated circuits
  • frequency detection
  • signal reconstruction
  • system-on-chip

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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