A 4-Element 7.5-9 GHz Phased Array Receiver with 8 Simultaneously Reconfigurable Beams in 65 nm CMOS Technology

Nayu Li, Min Li, Shaogang Wang, Zijiang Zhang, Huiyan Gao, Yen Cheng Kuan, Xiaopeng Yu, Zhiwei Xu

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

This paper presents a 4-element 7.5-9 GHz phased array receiver with 1-8 concurrent beams in a 65-nm CMOS technology. All the elements are fully-connected to each output beam using 32 phase shifters and 8 active combiners. The current-starving gm-based phase shifter with 6-bit phase resolution achieves <2° RMS phase error and <0.3 dB RMS gain error. The receiver demonstrates 20 dB gain, 3.6 dB noise figure (NF) and-19 dBm input 1-dB gain compression point (IP1dB) in 7.5-9 GHz band for each element. The chip occupies 5.42 × 3.62 mm2 area excluding pads and consumes 860 mW, equivalent to 27 mW per element per beam. To our knowledge, the receiver achieves the maximum number of simultaneously reconfigurable beams with the lowest power consumption per element per beam in RF phase shifting and combining receiver chips.

Original languageEnglish
Title of host publicationRFIC 2020 - 2020 IEEE Radio Frequency Integrated Circuits Symposium
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages83-86
Number of pages4
ISBN (Electronic)9781728168098
DOIs
StatePublished - Aug 2020
Event2020 IEEE Radio Frequency Integrated Circuits Symposium, RFIC 2020 - Virtual, Los Angeles, United States
Duration: 4 Aug 20206 Aug 2020

Publication series

NameDigest of Papers - IEEE Radio Frequency Integrated Circuits Symposium
Volume2020-August
ISSN (Print)1529-2517

Conference

Conference2020 IEEE Radio Frequency Integrated Circuits Symposium, RFIC 2020
CountryUnited States
CityVirtual, Los Angeles
Period4/08/206/08/20

Keywords

  • fully-connected multi-beam phased array
  • low-noise amplifier
  • phase shifter
  • phased array receiver

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