RF front-end with on-chip transmitter/receiver isolation using a gyrator

摘要

An RF front-end with on-chip transmitter/receiver isolation using a gyrator is presented herein. The RF front end is configured to support full-duplex communication and includes a gyrator and a transformer. The gyrator includes two transistors that are configured to isolate the input of a low-noise amplifier (LNA) from the output of a power amplifier (PA). The gyrator is further configured to isolate the output of the PA from the input of the LNA. The gyrator is at least partially or fully capable of being integrated on silicon-based substrate.

主权项

1. A gyrator-based duplexer comprising:
a first transistor comprising a source, a drain coupled to a first port, and a gate coupled to a second port; and a second transistor comprising a source, a drain coupled to the second port, and a gate coupled to the first port, wherein the first transistor electrically isolates the first port from the second port by providing a drain-to-source current based on a voltage across the second port.