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 0.5̂ 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.
Original language | English |
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Article number | 4684652 |
Pages (from-to) | 2660-2673 |
Number of pages | 14 |
Journal | IEEE Journal of Solid-State Circuits |
Volume | 43 |
Issue number | 12 |
DOIs | |
Publication status | Published - 2008 Dec |
Keywords
- CMOS
- Concurrent
- Large-scale phased arrays
- Multi-band
- Multi-beam
- Phased arrays
- Scalable
- Tritave
ASJC Scopus subject areas
- Electrical and Electronic Engineering