A 4-Element 60-GHz CMOS Phased-Array Receiver with Beamforming Calibration

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Liang Wu
  • Hiu Fai Leung
  • Alvin Li
  • Howard C. Luong

Detail(s)

Original languageEnglish
Article number7797195
Pages (from-to)642-652
Journal / PublicationIEEE Transactions on Circuits and Systems I: Regular Papers
Volume64
Issue number3
Publication statusPublished - 1 Mar 2017

Abstract

A 4-element 60-GHz phased-array receiver RF front-end (RFE) employing LO-path phase-shifting configuration is presented. A wide bandwidth from 57 to 66 GHz is achieved by using multiple design techniques, including wide-band input matching network using on-chip baluns, peak-frequency staggering in the LNAs, and resonant-frequency tuning of the LC load in the first down-conversion stages. Furthermore, beamforming calibration is implemented by sequentially performing gain equalization, I/Q calibration and successive-approximation phase tuning. Implemented in a 65-nm CMOS process, each element measures gain of 21 dB and NF of 7.2 dB and IP1dB of -21 dBm in high-gain mode while achieves IP1dB of -12.5 dBm with gain of -2 dB and NF of 20 dB in low-gain mode. With beamforming calibration, the peak-to-null ratio of the synthesized 4-element array pattern is improved from 16.5 dB to 28.5 dB, corresponding to phase error of ±0.6° and amplitude mismatch of ±1.1 dB. The whole system consumes 320 mW from a 1.2-V supply and occupies a core area of 2.0\times 1.3 mm2 excluding pads.

Research Area(s)

  • 60 GHz, Beamforming calibration, IEEE 802.15.3c, LO-path phase shifting, millimeter-wave (mmW), mixing, peak-to-null ratio, phased-array, receiver, transformer

Citation Format(s)

A 4-Element 60-GHz CMOS Phased-Array Receiver with Beamforming Calibration. / Wu, Liang; Leung, Hiu Fai; Li, Alvin et al.

In: IEEE Transactions on Circuits and Systems I: Regular Papers, Vol. 64, No. 3, 7797195, 01.03.2017, p. 642-652.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review