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A fully integrated 24-GHz eight-element phased-array receiver in silicon

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3 Author(s)
Xiang Guan ; Moore Lab., California Inst. of Technol., Pasadena, CA, USA ; Hashemi, H. ; Hajimiri, A.

This paper reports the first fully integrated 24-GHz eight-element phased-array receiver in a SiGe BiCMOS technology. The receiver utilizes a heterodyne topology and the signal combining is performed at an IF of 4.8 GHz. The phase-shifting with 4 bits of resolution is realized at the LO port of the first down-conversion mixer. A ring LC voltage-controlled oscillator (VCO) generates 16 different phases of the LO. An integrated 19.2-GHz frequency synthesizer locks the VCO frequency to a 75-MHz external reference. Each signal path achieves a gain of 43 dB, a noise figure of 7.4 dB, and an IIP3 of -11 dBm. The eight-path array achieves an array gain of 61 dB and a peak-to- ratio of 20 dB and improves the signal-to-noise ratio at the output by 9 dB.

Published in:

Solid-State Circuits, IEEE Journal of  (Volume:39 ,  Issue: 12 )