| 摘要 |
A radio frequency receiver (700) includes a first amplifier (701) that amplifies a radio frequency signal (720) into a first stage signal (721), a detector (707) that produces a bypass signal (731) when the signal strength of the received signal is sufficiently strong, and a switch (702) that provides the first stage signal (721) when the bypass signal (731) is asserted and the first stage signal (721) filtered by a radio frequency filter (703) and amplified by a second amplifier (704) when the bypass signal (731) is not asserted. The detector (707) also produces a bias control signal (727) and bias generators (709, 710) set the bias levels that increases as the signal level increases. The invention can be used to increase the range of linearity, and to reduce power consumption by reducing the amplification.
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