Improvement of noise performance in phased-array receivers

Junghyun Kim, Jinho Jeong, Sanggeun Jeon

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

This paper presents a new analytical approach and experimental verification for the improvement of noise performance in phased-array receivers. For analysis purposes, a multi-channel array system is converted into an equivalent single-channel system, such that the two presents the identical signal and noise powers at the output, respectively. We define an effective gain, noise figure, and signal-to-noise ratio in the equivalent system. Through the proposed approach, the noise performance of the array receiver is analyzed in a general and straightforward manner and then compared to that of each individual array channel. In addition, the phase noise of the array system is analyzed in a rigorous manner, showing its effective reduction by a factor of the array size. The predicted improvement of the noise performance is experimentally confirmed with a CMOS integrated phased-array receiver.

Original languageEnglish
Pages (from-to)176-183
Number of pages8
JournalETRI Journal
Volume33
Issue number2
DOIs
Publication statusPublished - 2011 Apr 1

Keywords

  • CMOS
  • Noise figure
  • Phase noise
  • Phased-array receiver
  • RFIC
  • Signal-to-noise ratio

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Computer Science(all)
  • Electrical and Electronic Engineering

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