Paper Info
Title
Breaking the Performance Tradeoffs in N-Path Mixer-First Receivers Using a Second-Order Baseband Noise-Canceling TIA
Abstract
Input-match, noise figure (NF), in-band (IB) third-order input-referred intercept point (IIP3), out-of-band (OB) IIP3, and power consumption are five crucial performance metrics of a radio frequency (RF) receiver. In a typical passive mixer-first receiver, these five performance metrics are tightly coupled with each other. In this article, a second-order baseband noise-canceling (NC) scheme is proposed to break the performance tradeoffs in an N-path mixer-first receiver. Analytical expressions for input impedance, NF, IB-IIP3, and OB-IIP3 of the proposed NC receiver are derived and verified. A prototype mixer-first receiver is implemented in CMOS 180 nm technology and tested in the laboratory. In measurements, the receiver achieves an NF less than 4 dB and IB-IIP3 of +14.5 dBm over a frequency range of 0.2-1.2 GHz. The measured OB-IIP3 is +25 dBm at a frequency offset of 2.2 times the bandwidth while consuming a static power of 20 mW.
Year
DOI
Venue
2020
10.1109/JSSC.2020.3005776
IEEE Journal of Solid-State Circuits
Keywords
DocType
Volume
Baseband noise cancellation,N-path mixer-first receiver,performance tradeoffs,second-order transimpedance amplifier (TIA)
Journal
55
Issue
ISSN
Citations 
11
0018-9200
0
PageRank 
References 
Authors
0.34
18
2
Name
Order
Citations
PageRank
Prateek Sharma120114.12
Nagarjuna Nallam2116.25