Matsushita Electric Industrial Co., Ltd.

Minoru Kanda

Tomohiro Okumura

Ichiro Nakayama

Kibatsu Shinohara

Yukihiro Maegawa

Kenji Sumida

Shiniti Matamura

The present invention provides a matching circuit which has a wide range in which matching can be achieved and the matched state of which is stabilized with respect to a change in the load state. To an input terminal ( ) of a matching circuit ( ), one terminal of a first variable reactance element ( ) is connected. The other terminal of the first variable reactance element ( ) is connected to a point between a first fixed reactance element ( ) and a second fixed reactance element ( ), which are connected in series. The first fixed reactance element ( ) is grounded, and the second fixed reactance element ( ) is connected to one terminal of a second variable reactance element ( ) and connected to one terminal of a stripline ( ). The other terminal of the second variable reactance element ( ) is grounded, and the other terminal of the stripline ( ) is connected to an output terminal ( ).

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Yokohama, Japan

Minoru Kanda