A 60 GHz LNA with Variable Transmission Characteristics Using Q-Enhancement

Research output: Contribution to book/Conference proceedings/Anthology/ReportConference contributionContributedpeer-review

Abstract

In this work, we study and present a 60 GHz low noise amplifier (LNA) with variable transmission characteristics. The tuning is achieved by actively changing the quality factor of the transformers, used in the output matching network of each stage with a cross coupled pair (XCP). By controlling the amount of negative resistance of the XCP, and the strategic distribution of the gain peaks during the design phase, gain, center frequency, and bandwidth are tunable. The gain of the amplifier can be continuously set from 26 dB to 37 dB at the cost of 0.5 dB higher noise figure and 3 mW more dc power, while the center frequency can be varied from 59.4 GHz to 61.2 GHz, and the bandwidth can be tuned from 2 GHz to 4.2 GHz. As a proof of concept, the circuit is implemented in a 22 nm fully depleted silicon on insulator (FD-SOI) CMOS technology. To the best of the authors' knowledge, this is the first millimeter wave LNA with variable transmission characteristics using Q-enhancement.

Details

Original languageEnglish
Title of host publication2025 20th European Microwave Integrated Circuits Conference, EuMIC 2025
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Pages266-269
Number of pages4
ISBN (electronic)9782874870828
Publication statusPublished - 2025
Peer-reviewedYes

Conference

Title20th European Microwave Integrated Circuits Conference, EuMIC 2025
Duration22 - 23 September 2025
CityUtrecht
CountryNetherlands

External IDs

ORCID /0000-0001-6778-7846/work/203810844
ORCID /0000-0003-1319-0870/work/203812193

Keywords

Keywords

  • 22 nm FD-SOI, 60 GHz, cascode circuit, CMOS, LNA, low power, millimeter-wave, negative resistance, Q-enhancement, variable gain