SINGLE-INPUT MULTIPLE-OUTPUT AMPLIFIERS WITH INDEPENDENT GAIN CONTROL PER OUTPUT

摘要

Amplifiers with multiple outputs and separate gain control per output are disclosed. In an exemplary design, an apparatus (e.g., a wireless device or an integrated circuit) may include first and second amplifier circuits. The first amplifier circuit may receive and amplify an input radio frequency (RF) signal based on a first variable gain and provide a first amplified RF signal. The second amplifier circuit may receive and amplify the input RF signal based on a second variable gain and provide a second amplified RF signal. The input RF signal may include a plurality of transmitted signals being received by the wireless device. The first variable gain may be adjustable independently of the second variable gain. Each variable gain may be set based on the received power level of at least one transmitted signal being received by the wireless device.

主权项

1. An apparatus comprising:
a first amplifier circuit configurable to receive an input radio frequency (RF) signal and to amplify the input RF signal based on a first variable gain to provide a first amplified RF signal, the input RF signal comprising a plurality of transmitted signals received by a wireless device; and a second amplifier circuit configurable to receive the input RF signal and to amplify the input RF signal based on a second variable gain to provide a second amplified RF signal, wherein the first amplifier circuit and the second amplifier circuit are included in a low noise amplifier (LNA) configured to receive the input RF signal, to output a first amplified output signal based on the first amplified RF signal, and to output a second amplified output signal based on the second amplified RF signal.