| 摘要 |
<p>Described herein is a adaptive front-end receiver architecture (200) that is configurable to operate in a first mode where an incoming signal is amplified before being down-converted and in a second mode where the incoming signal is down-converted without amplification. The architecture (200) comprises a low-noise amplifier (210) having an input (215) to which an input signal (220) is applied for processing and a mixer arrangement (250) connected in series with the low-noise amplifier (210), the mixer arrangement (250) including a local oscillator (LO2) that down-converts output signals from the low-noise amplifier (210). A further mixer arrangement (240), including a further local oscillator (LO1), is provided that bypasses the low-noise amplifier (210), the further local oscillator (LO1) directly down-converting the input signal (220). In each mode of operation, the down-converted signal is filtered using a baseband impedance component (230) to provide an output signal (260) for further processing.</p> |
