A wideband auxiliary receiver embeds a band-reject N-path filter in the low-noise amplifier to improve the compression point. The receiver has high input impedance and it can be placed at the transmitter output without loading effects. Implemented in a 28nm CMOS technology it occupies 0.12mm2 active area and it can withstand up to +4 dBm QPSK modulated 20 MHz signal with less than 1-dB noise degradation at 50 MHz offset, achieving an equivalent -171 dBc/Hz noise-to-carrier ratio at 1 GHz. Operation was experimentally verified between 0.7 and 2 GHz. The signal path draws 9 mA from a 1.8 V supply and the clock generation circuits draw 16 mA from a 1.2V supply at 1 GHz.

A 0.7–2 GHz auxiliary receiver with enhanced compression for SAW-less FDD

D. Montanari;D. Manstretta;R. Castello
2017

Abstract

A wideband auxiliary receiver embeds a band-reject N-path filter in the low-noise amplifier to improve the compression point. The receiver has high input impedance and it can be placed at the transmitter output without loading effects. Implemented in a 28nm CMOS technology it occupies 0.12mm2 active area and it can withstand up to +4 dBm QPSK modulated 20 MHz signal with less than 1-dB noise degradation at 50 MHz offset, achieving an equivalent -171 dBc/Hz noise-to-carrier ratio at 1 GHz. Operation was experimentally verified between 0.7 and 2 GHz. The signal path draws 9 mA from a 1.8 V supply and the clock generation circuits draw 16 mA from a 1.2V supply at 1 GHz.
Proceedings of the 43rd IEEE European Solid State Circuits Conference, ESSCIRC 2017
978-1-5090-5025-3
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11571/1208152
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