Patent ID: 8699977
Filing Date: 2014-04-15
Classification: H03F,H04B

Abstract:
1. A receiver comprising: an antenna for receiving signals in a plurality of frequency ranges; a plurality of amplifiers, each of the plurality of amplifiers being configured to amplify signals in one of the plurality of frequency ranges; a plurality of receive paths, each of the plurality of receive paths connecting an output of the antenna to an input of one of the plurality of amplifiers, wherein each of the plurality of receive paths includes a power detector for monitoring signal power in the receive path and a switch which can be operated to activate or deactivate the receive path, wherein the switch of each receive path is operable to deactivate the receive path if an overload condition is detected by the power detector of that receive path; wherein the switch of each of the plurality of receive paths is biased towards a position in which the receive path is deactivated when a power supply is provided to the switch; and wherein the power detector of each of the plurality of receive paths has an output which is connected to a power supply input of the switch of that receive path such that if an overload condition is detected by the power detector the switch receives a power supply to cause it to revert to its bias position and deactivate the receive path.