High frequency switching component

摘要

A high frequency switching component (1) for being connected to a transmission circuit, a reception circuit, and an antenna to be used for switching to either a state in which the transmission circuit is connected to the antenna, or a state in which the reception circuit is connected to the antenna, comprising: a multilayer circuit board, on which there is formed a circuit including: a transmission circuit terminal (Tx) to be connected to the transmission circuit; a reception circuit terminal (Rx) to be connected to the reception circuit; an antenna terminal (ANT) to be connected to be the antenna; a ground terminal (GND); a first diode (D1) whose anode is connected to the transmission circuit terminal (Tx) and the cathode thereof is connected to the antenna terminal (ANT); a second diode (D2) whose anode is connected to the reception circuit terminal (Rx) and the cathode thereof is connected to the ground terminal (GND); a signal line (3) for connecting the transmission circuit terminal (Tx) , the reception circuit terminal (Rx), and the antenna terminal (ANT) via the first diode (D1); and an inductor (L1, L2, L3) or an LC filter disposed between the signal line (3) and the ground terminal (GND) to reduce noise on the signal line (3) ; in which the transmission circuit terminal (Tx), the reception circuit terminal (Rx), the antenna terminal (ANT), the ground terminal (GND), the first diode (D1), and the second diode (D2) are disposed on a surface of the multilayer circuit board; at least a part of the signal line (3) being disposed inside the multilayer circuit board; and the inductor (L1, L2, L3) being disposed either inside or on the surface of the multilayer circuit board. <IMAGE>