A wideband blocker-resilient RF front-end with selective input-impedance matching for direct-ΔΣ-receiver architectures

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Conference article in proceedings
Date
2016-12-21
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Mcode
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Language
en
Pages
4
Series
2016 IEEE Nordic Circuits and Systems Conference (NORCAS)
Abstract
This paper presents a wideband blocker-tolerant RF front-end suitable for direct-ΔΣ-E-receivers. Blockers are attenuated by providing low receiver input impedance at blocker frequencies while for desired frequency the input impedance is boosted to matched condition by providing an up-converted positive feedback from the baseband stage. RF front-end is evaluated on 28nm fully-depleted silicon-on-insulator CMOS process with current consumption of 8mA, excluding local-oscillator drive, at 1V supply voltage. Front-end is reconfigurable from 0.7-3GHz with maximum noise figure of 5dB and achieves an out-of-band 1dB compression point of 0dBm at 100MHz local oscillator frequency offset.
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Keywords
RADIO RECEIVER, NM CMOS
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Citation
Haq , F U , Englund , M , Stadius , K , Kosunen , M , Ryynänen , J , Koli , K & Östman , K B 2016 , A wideband blocker-resilient RF front-end with selective input-impedance matching for direct-ΔΣ-receiver architectures . in 2016 IEEE Nordic Circuits and Systems Conference (NORCAS) . , 7792880 , IEEE , IEEE Nordic Circuits and Systems Conference , Copenhagen , Denmark , 01/11/2016 . https://doi.org/10.1109/NORCHIP.2016.7792880