A 1.4v 5GHz four-antenna cartesiancombining receiver in 90nm CMOS for beamforming and spatial diversity applications
- 30 August 2005
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
Abstract
A 90nm CMOS four-channel analog beamforming receiver draws 140mW at 1.4V and achieves 6dB SNR improvement with 360/spl deg/ look-angle coverage and 20dB interference cancellation. Vector combinations of programmable gain elements eliminate the need for explicit phase shifters. The analog combining technique is also useful as a low-power range extender/interference canceller in conjunction with spatial-multiplexing MIMO.Keywords
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