Patent ID: 7809095
Filing Date: 2010-10-05
Classification: H03G,H04B,H04L,Y02D

Abstract:
1. A wireless receiving apparatus comprising: a plurality of antennas; a plurality of antenna branches connected to the plurality of corresponding antennas each antenna branch capable of receiving a wireless signal and comprising a variable gain amplifying unit; a demodulating unit demodulating a reception signal outputted from the antenna branches; an antenna selecting unit selecting a packet waiting antenna from the plurality of antennas based upon reception power of the reception signal; a packet detecting unit detecting a packet received via the packet waiting antenna; a power supply control unit stopping a supply of electric power to a packet non-waiting antenna branch except for the antenna branch connected to the packet waiting antenna until the packet detecting unit detects the packet and supplying electric power to the plurality of antenna branches after the packet detecting unit detects the packet; a gain value calculating unit calculating a gain value of the variable gain amplifying unit based upon the reception signal received via the packet waiting antenna; and a gain value output control unit controlling a gain of the variable gain amplifying unit based upon the gain value calculated by the gain value calculating unit after the packet non-waiting antenna branch is initiated when the power supply control unit supplies the electric power to the plurality of antenna branches.