A 28 GHz Digital-Controlled 4-bit Vector Modulator Based Phase Shifter Design

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Abstract

This paper presents a 4-bit digital-controlled active phase shifter implemented in a 0.25μm SiGe:C BiCMOS process for the fifth-generation (5G) communication. It is designed to cover 27.5 GHz to 28.35 GHz spectrum and to achieve balance among power gain, phase accuracy, power consumption and size. The input signal is first divided into two paths by a transformer-based quadrature generator and then weighted summed by a Gilbert typed variable gain amplifier (VGA). Based on the simulation, the proposed phase shifter achieves average 5.4 dB power gain with 17.5mW power consumption, while obtaining less than 1.5 dB rms gain error from 27 to 28.5 GHz. Both input and output reflection coefficients are lower than -10 dB in the whole designed frequency range.

Original languageEnglish
Title of host publication2020 IEEE MTT-S International Wireless Symposium, IWS 2020 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers
Number of pages3
ISBN (Electronic)9781728167039
DOIs
Publication statusPublished - 1 Mar 2021
Event7th IEEE MTT-S International Wireless Symposium (IEEE IWS 2020) - Shanghai, China
Duration: 20 Sep 202023 Sep 2020

Conference

Conference7th IEEE MTT-S International Wireless Symposium (IEEE IWS 2020)
CountryChina
CityShanghai
Period20/09/2023/09/20

Keywords

  • circular inductor
  • Path loss phased arrays
  • quadrature generation
  • vector modulator based phase shifter

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