Double-Conversion, Noise-Cancelling Receivers Using Modulated LNTAs and Double-Layer Passive Mixers for Concurrent Signal Reception With Tuned RF Interface

A double-conversion, noise-cancelling receiver architecture is presented that consists of a double-layer mixer-first branch and two quadrature-modulated LNTA branches. The two layers of passive mixing in the mixer-first branch up-convert the low-pass, baseband impedance and create concurrent, narrow...

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Bibliographic Details
Published in:IEEE transactions on circuits and systems. I, Regular papers Regular papers, 2021-09, Vol.68 (9), p.3913-3926
Main Authors: Han, Guoxiang, Kinget, Peter R.
Format: Article
Language:English
Subjects:
Baseband
Clocks
Concurrent signal reception
Conversion
Harmonic analysis
harmonic rejection (HR)
Impedance
Impedance matching
mixer-first
Mixers
multi-carrier
Narrowband
Noise
noise cancellation
Quadratures
Radio frequency
Receivers
Signal reception
Transconductance
wideband
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Summary:A double-conversion, noise-cancelling receiver architecture is presented that consists of a double-layer mixer-first branch and two quadrature-modulated LNTA branches. The two layers of passive mixing in the mixer-first branch up-convert the low-pass, baseband impedance and create concurrent, narrowband impedance matching at (F_{{LO}} \pm F_{{IF}}) , as well as concurrently receive signals around these two RF carriers while rejecting spurious responses without using any IF filters. To improve the noise performance, quadrature-modulated LNTA branches are incorporated to allow frequency-translational, noise cancellation for better receiver sensitivity. Double conversion is achieved in the LNTA branches by periodically varying the LNTA transconductance and current-mode, passive mixing. A generalized, linear time-varying (LTV) analysis of the receiver is presented and verified with behavioral-model simulation results.
ISSN:1549-8328
1558-0806
DOI:10.1109/TCSI.2021.3086708