Patent ID: 9571136
Date: 2017-02-14
CPC Classifications: H04B

Claim:
1. An apparatus for receiving signals in a radio frequency system, the apparatus comprising: a first low noise amplifier that amplifies and filters a signal received from an antenna; a first frequency mixer that mixes the signal output from the first low noise amplifier and an oscillation signal supplied from a local oscillator to create a signal of an intermediate frequency; a second frequency mixer that mixes the signal of the intermediate frequency with a plurality of oscillation signal comprises one or more oscillation signals that have an offset added to have different frequency channels, which have a predetermined bandwidth, to create a plurality of signals of a baseband frequency; a first channel selection filter that divides one signal generated in the second frequency mixer into one predetermined frequency channel having a predetermined bandwidth using the offset; a first amplifier that amplifies the signals that have been filtered in the first channel selection filter; and a signal searching apparatus that divides the signal received from the antenna into baseband frequency channels to allow the signal searching apparatus connected with the apparatus for receiving signals in a radio frequency system to recognize the sensitivity or the intensity of the signal received from the antenna.