A V-band variable gain amplifier with low phase variation using 90-nm CMOS technology

Jeng Han Tsai, Jen Wei Wang, Chung Han Wu

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

A V-band variable gain amplifier (VGA) with wide gain control range, low phase variation, and low return loss variation is designed and implemented on 90-nm CMOS process. Utilizing a phase compensation capacitor at the common gate transistor and a source degeneration inductor at the common source transistor of the cascode configuration, the VGA achieves gain control range of 15.8 dB with only 6.9° transmission phase variation at 60 GHz via simple control mechanism. The maximum small signal gain is 15.8 dB at 60 GHz. In addition, the input/output return losses are insensitivity at different gain state of the VGA.

Original languageEnglish
Pages (from-to)1946-1949
Number of pages4
JournalMicrowave and Optical Technology Letters
Volume56
Issue number8
DOIs
Publication statusPublished - 2014 Aug

Keywords

  • 60 GHz
  • CMOS
  • phase array system
  • variable gain amplifier

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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