Apparatus and method for bypassing amplifiers used to amplify signals received by wireless communication systems

摘要

An apparatus may include a multi-throw switch having a common terminal connected to an antenna of a wireless communication system. The multi-throw switch may be configured to direct signals received from the antenna between (1) an amplification path that connects a receive terminal of the multi-throw switch to a receiver of the wireless communication system and (2) at least one bypass path that connects an additional receive terminal of the multi-throw switch to the receiver. The amplification path may include at least one amplifier that amplifies signals received from the antenna, and the bypass path may have a gain that is less than a gain of the amplification path. Various other systems and methods are also disclosed.

主权项

1. An apparatus comprising:
A multi-throw switch having a common terminal connected to an antenna of a wireless communication system, the multi-throw switch configured to direct signals received from the antenna between:
an amplification path that connects a receive terminal of the multi-throw switch to a receiver of the wireless communication system, the amplification path comprising at least one amplifier that amplifies signals received from the antenna; andat least one bypass path that connects an additional receive terminal of the multi-throw switch to the receiver, the bypass path comprising at least:a filter that attenuates unwanted signals received from the antenna;an attenuator that optionally produces a desired attenuation of signals received from the antenna;a bypass amplifier that optionally produces a desired amplification of signals received from the antenna and that has a gain that is less than a gain of the amplification path; andwherein the filter in the bypass path comprises:
a low-pass filter that removes harmonics generated by the bypass amplifier.