Patent ID: 7027777
Filing Date: 2006-04-11
Classification: H04B

Abstract:
1. A high frequency switch having a plurality of signal paths for four frequency bands, the high frequency switch comprising: branching means of branching a transmission signal and a reception signal of the four frequency bands according to a frequency, first and second transmission reception changeover means of performing switching to each of the plurality of signal paths, a plurality of filters placed in the plurality of signal paths, and a plurality of control power supplies for switching on/off a plurality of diodes of the first and second transmission reception changeover means, wherein the first and second transmission reception changeover means are connected to the branching means, the first transmission reception changeover means has a one-input three-output port configuration in which a first common transmitting end for transmission signals of the first frequency band and the second frequency band, a first receiving end for a reception signal of the first frequency band, and a second receiving end for a reception signal of the second frequency band are connected as switching targets, the second transmission reception changeover means has a one-input three-output port configuration in which a second common transmitting end for transmission signals of the third frequency band and the fourth frequency band, a third receiving end for a reception signal of the third frequency band, and a fourth receiving end for a reception signal of the fourth frequency band are connected as switching targets, and wherein the first common transmitting end on the first transmission reception changeover means and the fourth receiving end on the second transmission reception changeover means are controlled by a first common control power supply.