Patent ID: 7945228
Filing Date: 2011-05-17
Classification: H04B,H04W,Y02D

Abstract:
1. A receiver comprising: a first semiconductor chip and a second semiconductor chip for receiving a signal in a first radio frequency band; and a communication unit for performing communication using a signal in a second radio frequency band, the first semiconductor chip including: the second semiconductor chip including: wherein, when frequency of the first local signal is determined to be in a predetermined frequency range of the second frequency band, the first semiconductor chip does not output the first local signal to the second semiconductor chip, and the second mixing unit frequency-converts the signal of the first radio frequency band using the second local signal, wherein, when frequency of the first local signal is determined to be out of the predetermined frequency range of the second frequency band, the first semiconductor chip outputs the first local signal to the second semiconductor chip, and the second mixing unit frequency-converts the signal of the first radio frequency band using the first local signal.