| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a transmission and reception module device capable of reducing distortion of a transmission RF output pulse waveform by stabilizing drain voltage. <P>SOLUTION: The transmission and reception module device is provided with a control circuit 13 which alternately switches a first period of time for performing transmission and a second period of time for performing reception, performs pulse drain driving that applies drain voltage to a GaN amplifier 8 during transmission and disconnects the drain voltage from the GaN amplifier 8 during nontransmission when the first period of time is longer than a threshold (prescribed period of time), and performs pulse gate driving that applies a gate control signal to the GaN amplifier 8 during transmission when the first period of time is shorter than a threshold (prescribed period of time) and disconnects the gate control signal from the GaN amplifier 8 during nontransmission while keeping the drain voltage constant. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
