A D-band Calibration-Free Passive 360° Phase Shifter With 1.2°RMS Phase Error in 45 nm RFSOI

Mohammadreza Abbasi, Wooram Lee

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


This paper presents a new concept of passive phase shifters based on manipulating propagation delay through two parallel transmission lines periodically connected via digitally controlled switch networks. The proposed approach enables precise phase control and flat amplitude response across different phase settings. The prototype IC is fabricated in a 45 nm RFSOI process and occupies only 0.033 mm2. The phase control operates with 11.25°steps over 360° at 140 GHz while maintaining an RMS phase error of 1.2°. The insertion loss is 11.5 dB with < ±0.8 dB variation. Among published D-band phase shifters, this work achieves the lowest RMS phase error and reports bi-directional phase control over 360° and calibration-free operation.

Original languageEnglish (US)
Title of host publication2023 IEEE Radio Frequency Integrated Circuits Symposium, RFIC 2023
EditorsJennifer Kitchen, Steven Turner
PublisherInstitute of Electrical and Electronics Engineers Inc.
Number of pages4
ISBN (Electronic)9798350321227
StatePublished - 2023
Event2023 IEEE Radio Frequency Integrated Circuits Symposium, RFIC 2023 - San Diego, United States
Duration: Jun 11 2023Jun 13 2023

Publication series

NameDigest of Papers - IEEE Radio Frequency Integrated Circuits Symposium
ISSN (Print)1529-2517


Conference2023 IEEE Radio Frequency Integrated Circuits Symposium, RFIC 2023
Country/TerritoryUnited States
CitySan Diego

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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