Journal
IEEE JOURNAL OF SOLID-STATE CIRCUITS
Volume 50, Issue 12, Pages 2965-2974Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JSSC.2015.2461019
Keywords
Biquad; BLE; complex poles; current re-use; Gm-C filter; LMV cell; low power; receiver; RF front-end
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In this paper, a receiver front-end tailored to Bluetooth Low Energy applications is presented. In the proposed solution, the LNA, mixers, VCO, quadrature scheme and the first stage of the analog base-band share the same bias current under a 0.8 V voltage supply leading to a sub-mW power consumption. A channel selection filter, implemented through a current re-use gm-C topology, completes the design. The presented prototype, realized in 130 nm CMOS technology, occupies an active area of 0.25 mm(2) while consuming only 0.6 mW. With a NF of 15.8 dB, an IIP3 of -17 dBm at the maximum gain and an image rejection above 30 dB the receiver front-end meets BLE noise figure, image rejection, phase noise and linearity requirements.
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