A 45 nm CMOS miniature phase shifter with constant amplitude response

Tal Vitaly Zlotnikov, Ofir Degani, Igor Brouk, Yael Nemirovsky

Research output: Contribution to journalArticlepeer-review

Abstract

We present analysis, optimization, design and characterization of an integrated passive analog phase shifter at 24 GHz in a commercially available 45 nm RF-CMOS process. The design is based on a well-known RC bridge topology, which was optimized for maximum phase shift and minimal amplitude response variation versus phase and frequency. Phase is controlled by varying DC voltage on a varactor, resulting in 60° maximum phase shift with 0.1 dB amplitude variation at 24 GHz. The size of the phase shifter circuit excluding pads and input/output buffers is 40×50 μm2.

Original languageEnglish
Pages (from-to)1143-1150
Number of pages8
JournalMicroelectronics Journal
Volume42
Issue number10
DOIs
StatePublished - Oct 2011

Keywords

  • CMOS analog integrated circuits
  • Passive phase shifters
  • Phased arrays

ASJC Scopus subject areas

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

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