Double-Conversion, Noise-Cancelling Receivers Using Modulated LNTAs and Double-Layer Passive Mixers for Concurrent Signal Reception With Tuned RF Interface
| Autor: | Peter R. Kinget, Guoxiang Han |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Physics
Acoustics Transconductance 020208 electrical & electronic engineering Impedance matching 02 engineering and technology Narrowband 0202 electrical engineering electronic engineering information engineering Baseband Radio frequency Sensitivity (control systems) Electrical and Electronic Engineering Noise (radio) Active noise control |
| Zdroj: | IEEE Transactions on Circuits and Systems I: Regular Papers. 68:3913-3926 |
| ISSN: | 1558-0806 1549-8328 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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