Patent Number: 6,310,517

Title: Microwave amplifier

Abstract: A microwave amplifier (10) of the present invention contains such an arrangement that both an inductor (12) and a resistor (13) are loaded in a parallel manner between a source electrode of a field-effect transistor (11) and the ground. Since the inductor (12) has a stray capacitance component (B), the inductor (12) is resonated at a resonant frequency "f0". However, since the source electrode of the field-effect transistor (11) is grounded via a resistor (13) connected in parallel to the inductor (12), even when the inductor (12) is opened due to a resonant operation, the field-effect transistor (11) is operated under normal condition. As a result, the operation of the microwave amplifier (10) is stabilized.

Inventors: Nakahara; Kazuhiko (Tokyo, JP), Itoh; Yasushi (Tokyo, JP)

Assignee: Mitsubishi Denki Kabushiki Kaisha

International Classification: H03F 3/189 (20060101); H03F 3/60 (20060101); H03F 3/193 (20060101); H03F 003/16 ()

Expiration Date: 10/30/2018