Murata Manufacturing Co., Ltd.

Wataru Takegawa

Akimasa Matsushima

Youji Maeda

Yoshikuni Higashikawa

A double-balanced mixer which includes four diodes effectively connected to each other in a bridge connection on a substrate. The four diodes are formed into two sets of diodes, each one set including two of the four diodes connected to the same input line, with two twin-diodes each including two of the four diodes formed on the same semi-conductor chips being used for the two sets of the diodes.

Double-balanced mixer

A transformer device of a double-balanced mixer includes a rectangular seat member and first and second transformers aligned side by side in a lengthwise direction on a top surface of the seat member. Support members project from the top surface of the seat member to position and secure the first and second transformers along the top surface. A plurality of pin terminals extend from a bottom surface of a seat member and are adapted to project through through-holes provided in a circuit board of the double-balanced mixer. Input and output wires of the first and second transformers respectively extend along recesses formed in the sides of the seat member for coupling to the pin terminals.

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Nagaokakyo, Japan

Wataru Takegawa