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A <12mW, 0.7–3.2GHz receiver with resonant multi-phase LO and current reuse harmonic rejection baseband

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4 Author(s)
Andrews, C. ; Cornell Univ., Ithaca, NY, USA ; Diamente, L. ; Johnson, B. ; Molnar, A.

We present a wide tuning range passive mixer-first receiver with resonant non-overlapping LO drive and noise-power optimized multi-path baseband amplifier. The receiver consumes 10-12mW (including VCOs, pulse generation and baseband) over a frequency range of 0.7-3.2GHz with a 1.3V supply. An LO generation architecture generates a 12.5% duty cycle resonant clock from standard complementary LC-tank VCOs. A capacitor sharing technique on the baseband side of the mixer doubles the RX frequency range of the 8-phase clock, achieving a NF as low as 7dB. The 1.8mW low noise baseband amplifier reuses the bias current of its four input channels while rejecting the 3rd/5th harmonics by >;34dB.

Published in:

Radio Frequency Integrated Circuits Symposium (RFIC), 2012 IEEE

Date of Conference:

17-19 June 2012