Ube Industries, Inc.

Ube Electronics, Ltd.

Nobuhiro Harada

Yoshiaki Fujiyama

Kosuke Nishimura

Masahiko Kitajima

Atsushi Okabe

Morito Yasumura

A dielectric contactless transmission device provided with a pair of &#xbc; wavelength dielectric resonance components () having: dielectric blocks () that have a first surface (), a second surface (), third to sixth surfaces (-) connecting the first surface () and the second surface (), and a resonance hole () for making the first surface () and the second surface () communicate; intra-resonance hole conductors () covering the inner surface of the resonance hole (); external conductors () covering the second surface () and the third to sixth surfaces (-), the external conductors () being connected to one end of the intra-resonance hole conductors; and coupling electrodes () arranged on the first surface () while being isolated from the external conductors () and connected to the other end of the intra-resonance hole conductors (), the first surfaces () being arranged facing each other so that the coupling electrodes () of the pair of &#xbc; wavelength dielectric resonance components () are capacitively coupled.

Dielectric contactless transmission device and contactless transmission method

A resonance device includes a waveguide, a dielectric resonator disposed coaxial with the waveguide, an excitation structure thereof. One end of the waveguide is open and the other is short-circuited. The dielectric resonator has two end surfaces disposed on opposite sides to each other, is insulated from the waveguide in the vicinity of the open end of the waveguide, and is disposed within the waveguide, such that a thickness being a distance between the two end surfaces is constant, regardless of a radial position of the dielectric resonator. In a power transmission apparatus, the two resonance devices are provided. The open end of the waveguide of one resonance device and the open end of the waveguide of the other resonance device are disposed opposite each other. Power, which is input to an excitation structure of one resonance device, is output from an excitation structure of the other resonance device.

Power transmission apparatus and method, and resonance device used therein

A dielectric member comprising a laminated balun and a matching circuit, wherein the matching circuit is integrally mounted within the laminated balun. The matching circuit comprises a patterned conductive film formed on a surface of an existing dielectric substrate in the balun such that the balun is not increased in size.

Laminated balun with an integrally mounted matching circuit

A dielectric filter has a dielectric blockhaving a first end face, a second end face disposed in opposite side to the first end face and lateral faces each being disposed between edges of the first and second end faces; a plurality of resonators each having a through holewhich lies between the first and second end faces of the dielectric blockand is coated with an inner conductor, and an outer conductorcoated on the second end face and the lateral faces of the dielectric block; and input/output electrodewhich is insulated from the outer conductorand capacitively coupled to one of the resonators at input or output stage on the first end face, and extends to a mounting surface which is one of the lateral faces of the dielectric block. The input/output electrodeincludes a conductor patternformed on the first end faceand having an inductance component which self-resonates at a predetermined frequency.

Dielectric filter

A high performance dielectric ceramic filter in a small package is designed with one or more holes positioned off of the straight-line bisecting at least two holes. This configuration allows for the elimination of at least one trap hole while maintaining a given performance characteristic for the filter. In one specific embodiment of the present invention the performance characteristics of a conventional five-hole ceramic filter is realized in a three-hole filter wherein the holes are positioned so as to form the vertices of a triangle. The width of the resulting filter is approximately 50% of the width of the conventional five-hole filter it can replace. In another embodiment the same triangular positioning may be used to realize the performance characteristics of a four-hole ceramic filter.

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Yamaguchi, Japan

Nobuhiro Harada