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Double-Conversion, Noise-Cancelling Receivers Using Modulated LNTAs and Double-Layer Passive Mixers for Concurrent Signal Reception With Tuned RF Interface.
- Source :
-
IEEE Transactions on Circuits & Systems. Part I: Regular Papers . Sep2021, Vol. 68 Issue 9, p3913-3926. 14p. - Publication Year :
- 2021
-
Abstract
- 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 (FLO ± FIF), 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. [ABSTRACT FROM AUTHOR]
- Subjects :
- *IMPEDANCE matching
*BASEBAND
*HARMONIC analysis (Mathematics)
*RADIO frequency
Subjects
Details
- Language :
- English
- ISSN :
- 15498328
- Volume :
- 68
- Issue :
- 9
- Database :
- Academic Search Index
- Journal :
- IEEE Transactions on Circuits & Systems. Part I: Regular Papers
- Publication Type :
- Periodical
- Accession number :
- 153153071
- Full Text :
- https://doi.org/10.1109/TCSI.2021.3086708