Quintic mixer: A subharmonic up-conversion mixer for THz transmitter supporting complex digital modulation

Kyoya Takano, Shinsuke Hara, Kosuke Katayama, Shuhei Amakawa, Takeshi Yoshida, Minoru Fujishima

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

To realize a terahertz (THz) transmitter that supports complex digital modulation with a CMOS process having a sub-THz fmax, an unconventional triple-conversion transmitter architecture is introduced. Its first mixer is a quadrature modulator. The second mixer generates a second IF signal with two sidebands (up-converted signal and its image). The third mixer is the frequency quintupler-based, LO-less quintic mixer with an amplitude-distortion compensation filter. It up-converts the second IF signal to RF with high linearity using the two sidebands. No LO signal needs to be supplied, which simplifies the design of THz transmitter. A proof-of-concept experiment of the quantic mixer is demonstrated using a CMOS test chip with an on-chip IF receiver. A 16-QAM signal centered around 159 GHz is successfully generated from a modulated second IF signal at 31 GHz.

Original languageEnglish
Title of host publication2016 IEEE MTT-S International Microwave Symposium, IMS 2016
PublisherInstitute of Electrical and Electronics Engineers Inc.
Volume2016-August
ISBN (Electronic)9781509006984
DOIs
Publication statusPublished - 2016 Aug 9
Externally publishedYes
Event2016 IEEE MTT-S International Microwave Symposium, IMS 2016 - San Francisco, United States
Duration: 2016 May 222016 May 27

Other

Other2016 IEEE MTT-S International Microwave Symposium, IMS 2016
CountryUnited States
CitySan Francisco
Period16/5/2216/5/27

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Keywords

  • Complex digital modulation
  • frequency quintupler
  • QAM
  • quintic mixer
  • THz transmitter

ASJC Scopus subject areas

  • Radiation
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

Cite this

Takano, K., Hara, S., Katayama, K., Amakawa, S., Yoshida, T., & Fujishima, M. (2016). Quintic mixer: A subharmonic up-conversion mixer for THz transmitter supporting complex digital modulation. In 2016 IEEE MTT-S International Microwave Symposium, IMS 2016 (Vol. 2016-August). [7540420] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/MWSYM.2016.7540420