Sub-harmonic wireless locking of a THz radiating on-chip source in 65 nm CMOS

Samuel Jameson, Eliezer Halpern, Eran Socher

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


A novel method of locking an on-chip J-band radiating source is presented in this paper. The source is based on a fundamental W-band VCO that radiates its J-band 3rd harmonic using an on-chip loop antenna, connected directly to the differential VCO without a buffer. Radiating the chip with a W-band signal using a horn antenna 50 cm away, enables wireless injection locking of the radiating source. The source can be tuned in a wide frequency range of 280 to 294 GHz with peak total radiated power (TRP) of 0.6 mW, EIRP of +7 dBm and DC to THz radiated power efficiency of 3%. With a free-running phase noise of better than-95 dBc/Hz at 10 MHz offset, the locked signal follows the phase noise of the external reference up to a locking range around 80 MHz with-25 dBm of radiated W-band power. This new concept enables simple and cost effective locked CMOS THz source arrays.

Original languageEnglish
Title of host publicationEuropean Microwave Week 2015
Subtitle of host publication"Freedom Through Microwaves", EuMW 2015 - Conference Proceedings; 2015 10th European Microwave Integrated Circuits Conference Proceedings, EuMIC
PublisherInstitute of Electrical and Electronics Engineers Inc.
Number of pages3
ISBN (Electronic)9782874870408
StatePublished - 2 Dec 2015
Event10th European Microwave Integrated Circuits Conference, EuMIC 2015 - Paris, France
Duration: 7 Sep 20158 Sep 2015

Publication series

NameEuropean Microwave Week 2015:


Conference10th European Microwave Integrated Circuits Conference, EuMIC 2015


  • CMOS
  • Injection locking
  • J-band
  • THz
  • VCO
  • W-band
  • antenna
  • source
  • wireless


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