Abstract
This letter presents a 24 GHz 6 b phased-array receiver implemented in 0.13 mum CMOS. This design is based on a novel active vector generator that results in wideband quasi-quadrature vectors, which are used to synthesize the desired phase response. The active phase shifter has measured rms gain and phase errors of <0.5 dB and < 2.8deg at 23-24.4 GHz, resulting in a 6 b resolution. The phased-array receiver has a gain of 14 dB, a NF of 6 dB, a 3-dB gain bandwidth of 4.7 GHz and wideband input and output match. The chip consumes 30 mA from a 1.5 V supply with dimensions of 0.66 times 1.25 mm2 including pads (0.5 times 1 mm2 without pads).
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