Matsushita Electric Works, Ltd.

Haruhiko Hyosu

Yoshiaki Ueno

Hirofumi Konishi

Koji Yamashita

Yoshihiro Shogaki

Shinji Morino

Takao Sase

Haruhiro Kuboyama

Koji Matsushita

Haruo Ogawa

Toshiaki Inage

A balanced-to-unbalanced transformer for interconnecting a balanced signal transmitted on a balanced cable and an unbalanced signal transmitted on an unbalanced cable through a transformer. Common-mode impedance is reduced by grounding a center point of two or more impedance elements between signal lines on the balanced cable side of the transformer to a signal circuit ground or a frame ground on the unbalanced cable side of the transformer.

Balanced-to-unbalanced transformer

A wireless transmission system includes a plurality of terminal units, a specific one of which is provided with a transmission/receiving circuit that transmits a reference signal of a local oscillation frequency, while all others of which are provided respectively with a transmission/receiving circuit that prepares, on the basis of the reference signal received, a local oscillation frequency signal for frequency conversion of transmitting/receiving frequency signal and intermediate frequency signal, to thereby realize the system at lower costs even when a high local oscillation frequency is employed.

Wireless transmission/reception system including transmitting terminal

Growing community of inventors

Kadoma, Japan

Haruhiko Hyosu