Patent ID: 6360089
Filing Date: 2002-03-19
Classification: H04B

Abstract:
A radio apparatus comprising:a plurality of receiving systems each connected to a corresponding antenna, each receiving system comprising: a radio-frequency switch for connecting a corresponding antenna to ground when the radio-frequency switch is in one of an open or closed position and for maximizing an antenna gain of the corresponding antenna when in the other of the open or closed positions; a path control switch for selectively switching on and off to provide a path for a radio signal received by the corresponding antenna; a discriminator for discriminating one receiving system from other receiving systems based on radio signals received by the receiving systems, respectively; and a controller for simultaneously coordinating the control of the plurality of receiving systems such that a first radio-frequency switch of the one receiving system is open and a corresponding first path control switch is on and a second radio-frequency switch of each of the other receiving systems is closed and corresponding second path control switches are off.