Patent ID: 7149480
Filing Date: 2006-12-12
Classification: H04B

Abstract:
1. A receiver device comprising: a plurality of antennas having different antenna gains; an antenna switching device for selecting one of reception signals received by the plurality of antennas, and supplying the selected reception signal to a signal processor arranged subsequent to the antenna switching device; a detector for detecting the level of a reception signal from each antenna; and a controller for controlling the antenna switching device for selecting a reception signal having a lower level than a maximum input level of the signal processor, in accordance with detection result from the detector, wherein the controller operates to control the antenna switching device, in a manner such that once the level of a reception signal supplied to the signal processor becomes lower than a predetermined level, an antenna having a higher antenna gain than that of an antenna being selected is selected, wherein the controller has a judger for judging a reception state of each antenna; and when there are a plurality of antennas capable of receiving signals without any troubles, the antenna switching device is controlled so as to select a reception signal from an antenna having a low antenna gain.