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A Scalable 6-to-18 GHz Concurrent Dual-Band Quad-Beam Phased-Array Receiver in CMOS

TitleA Scalable 6-to-18 GHz Concurrent Dual-Band Quad-Beam Phased-Array Receiver in CMOS
Publication TypeJournal Article
Year of Publication2008
AuthorsJeon, S., Y-J. Wang, H. Wang, F. Bohn, A. Natarajan, A. Babakhani, and A. Hajimiri
JournalIEEE Journal of Solid-State Circuits
Volume43
Issue12
Pagination2660 - 2673
Date Published12/2008
ISSN0018-9200
KeywordsCMOS, concurrent, large-scale phased arrays, multi-band, multi-beam, phased-array, scalable, tritave
Abstract

This paper reports a 6-to-18 GHz integrated phased- array receiver implemented in 130-nm CMOS. The receiver is easily scalable to build a very large-scale phased-array system. It concurrently forms four independent beams at two different frequencies from 6 to 18 GHz. The nominal conversion gain of the receiver ranges from 16 to 24 dB over the entire band while the worst-case cross-band and cross-polarization rejections are achieved 48 dB and 63 dB, respectively. Phase shifting is performed in the LO path by a digital phase rotator with the worst-case RMS phase error and amplitude variation of 0.5deg and 0.4 dB, respectively, over the entire band. A four-element phased-array receiver system is implemented based on four receiver chips. The measured array patterns agree well with the theoretical ones with a peak-to-null ratio of over 21.5 dB.

DOI10.1109/JSSC.2008.2004863
Short TitleIEEE J. Solid-State Circuits