| 摘要 |
PROBLEM TO BE SOLVED: To provide a FET which is equipped with an electrode for electric field control of high output and operating with high efficiency and whose distortion property is improved. SOLUTION: In a FET which has a gate electrode 5, a source electrode 7, and a drain electrode 8, an RC circuit consisting of a resistor 11 and a MIM capacitor 10 is provided in series between a gate bus bar 4 for collecting gate electrode fingers and an electrode bus bar 12 for electric field control for collecting electrodes 9 for electric field control, and the gate electrode bus bar 4 and the electrode bus bar 12 for electric field control are connected with each other. A resistor 11 attenuates the amplitude of the voltage of the electrode 9 for electric field control less than the amplitude of the voltage of the gate electrode 5, and the capacitor blocks the DC voltage between the electrode 9 for electric field control and the gate electrode 5, and bias can be applied independent of the gate electrode 5.
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