Invention Grant
US07995972B2 Electronic component for communication device and semiconductor device for switching transmission and reception 有权
用于通信设备的电子部件和用于切换发送和接收的半导体器件

Electronic component for communication device and semiconductor device for switching transmission and reception
Abstract:
There are provided a transmission/reception switching circuit which is small in insertion loss and harmonic distortion and allows an increase in the output power of a power amplifier and an electronic component for communication on which the transmission/reception switching circuit is mounted. As an element composing a transmission/reception switching circuit in a wireless communication system, series-connected FETs or a multi-gate FET are used in place of a diode. Gate resistors connected between the individual gate terminals and a control terminal are designed to have resistance values which become progressively smaller from the gate to which a highest voltage is applied toward the gate to which a lowest voltage is applied.
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