A SiGe BiCMOS Amplifier-Frequency Doubler Chain Operating for 284-328 GHz

Junghwan Yoo, Jungsoo Kim, Jongwon Yun, Mehmet Kaynak, Jae Sung Rieh

Research output: Contribution to journalArticlepeer-review


This work describes the development of an amplifier frequency doubler chain (AFDC) operating at around 300 GHz based on SiGe BiCMOS technology. The driver amplifier is based on the differential cascode configuration, which employs coupled-line transformers for compact design. The frequency doubler is based on the class-B topology, which is known for exhibiting a large output power with low DC power consumption. The integrated AFDC, which consists of the frequency doubler and the preceding driver amplifier, exhibited a measured peak output power and DC-to-RF efficiency of -0.9 dBm and 0.97%, respectively, along with a conversion gain of -0.1 dB. It operates from 284 to 328 GHz with a 0-dBm input signal, consuming a total DC power of only 84 mW. The chip size is 720 X 310 µm2, excluding RF and DC pads.

Original languageEnglish
Pages (from-to)114-121
Number of pages8
JournalJournal of Electromagnetic Engineering and Science
Issue number2
Publication statusPublished - 2022

Bibliographical note

Funding Information:
This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korean government (No. NRF-2021R1A2C3009096).

Publisher Copyright:
© 2022. The Korean Institute of Electromagnetic Engineering and Science. All Rights Reserved.


  • Amplifier
  • Frequency Doubler
  • Heterojunction Bipolar Transistor (HBT)
  • Silicon Germanium

ASJC Scopus subject areas

  • Radiation
  • Instrumentation
  • Computer Networks and Communications
  • Electrical and Electronic Engineering


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