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Title: Widely-Tunable RF Receiver Employing Synthetic Diversity for Interference Mitigation
This paper presents a novel technique for suppression of in-band artifacts from out-of-band (OOB) interference in widely tunable RF receivers. The technique employs a multi-tap inductor-capacitor network (LCN) to generate diversity in gain and phase between taps across the targeted frequency range. Using this network to feed a bank of identical receivers sharing a single local oscillator (LO) allows multiple kinds of interferer artifact to be suppressed. Here we considered spur-induced and phase noise-induced artifacts. In each case, the resulting artifacts are linearly separable from signal when the outputs of the sub-receivers are recombined. AC and transient simulations were first performed to show feasibility of the proposed approach. A prototype was implemented in 45nm CMOS which confirmed the validity of the synthetic diversity (SD) approach for suppressing interferer artifacts, showing a maximum lowering in EVM and BER of 38% and 60% respectively.  more » « less
Award ID(s):
2030207
NSF-PAR ID:
10440077
Author(s) / Creator(s):
; ;
Date Published:
Journal Name:
2022 IEEE International Symposium on Circuits and Systems (ISCAS)
Page Range / eLocation ID:
1858 to 1862
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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