Tdk Corporation

Tadao Fujii

Taro Miura

Makoto Kobayashi

Shinya Nakai

Akira Nakamura

Kenji Endou

Kazuaki Suzuki

Keizou Kawamura

Yoshiyuki Yasukawa

Suguru Kondoh

Norikazu Yasuda

A delay line component having merits of small physical size and small insertion loss in a radio frequency. The delay line component with coaxial cable structure includes a center conductor, a dielectric which surrounds the center conductor and an outer conductor which is formed outside the dielectric. The dielectric is made of a ceramic dielectric with a large dielectric constant.

Delay compensation device, delay line component and manufacturing method of the delay line component

An object is to densify an internal conductor of a multilayer ceramic part to thereby reduce a line loss, improve operating properties such as Q value, and reduce a variation thereof. To this end, an internal conductor paste which is composed of conductor powder, preferably silver or copper powder and optionally, a glass frit is stacked with dielectric ceramic material layers and co-fired at or above the melting point of the conductor.

Multilayer ceramic parts and method for making

A circulator includes a circulator element (50) with inner conductors (41) having a predetermined pattern and an insulating ferromagnetic material body (40) closely surrounding the inner conductors. The insulating ferromagnetic material body is constituted by a fired single continuous body. The circulator also includes a plurality of terminal electrodes (76) formed on side surfaces of the circulator element and electrically connected to one end of the inner conductors, a plurality of circuit elements (51a, 51b, 51c) electrically connected to the terminal electrodes, and excitation permanent magnets (52, 53) for applying a dc magnetic field to the circulator element.

Multi-layer microwave circulator

Bandpass type filter having tri-plate line resonators

Growing community of inventors

Chiba, Japan

Tadao Fujii