SUPPORTING MULTIPLE FREQUENCY BANDS

摘要

A channel sharing method includes receiving a signal in a frequency band. The frequencies in the signal above a cutoff frequency are filtered to generate a filtered signal. The cutoff frequency is determined based on a frequency region that includes a plurality of frequency bands. The filtered signal is amplified using a mixer-tuned low noise amplifier (LNA). The mixer-tuned LNA includes a passive switching mixer and an LNA. The passive switching mixer presents a tunable impedance to the LNA. The LNA provides a voltage gain to the passive switching mixer. The voltage gain being proportional to the tunable impedance.

主权项

1. A method, comprising:
receiving a signal in a frequency band; filtering frequencies in the signal above a cutoff frequency to generate a filtered signal, wherein the cutoff frequency is determined based on a frequency region that includes a plurality of frequency bands; and amplifying the filtered signal using a mixer-tuned low noise amplifier (LNA), wherein the mixer-tuned LNA includes a passive switching mixer and an LNA, the passive switching mixer presenting a tunable impedance to the LNA, the LNA providing a voltage gain to the passive switching mixer, and the voltage gain being proportional to the tunable impedance.