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Mizutani Yasuhiko, Hirai Takami, Kadota Kazuhiro, Saka Hironobu, Kimura Hironobu: Laminated type dielectric filter. NGK Insulators, Soshin Electric, March 20, 2003: JP2003-087008 (130 worldwide citation)

PROBLEM TO BE SOLVED: To effectively miniaturize a laminated type dielectric filter whereas realizing balanced inputs/outputs, with considering the connection of high-frequency amplifier circuits, etc.SOLUTION: The filter is composed of filter parts 20, having first and second input resonance electr ...


2
Mizuno Kazuyuki, Hirai Takami, Mizutani Yasuhiko, Arai Hiroyuki: Antenna system and its manufacture. NGK Insulators, Arai Hiroyuki, October 13, 2000: JP2000-286634 (128 worldwide citation)

PROBLEM TO BE SOLVED: To make the effect which is obtained when a filter and an antenna are integrated compatible with such an effect that the inspections through the filter can be performed easily. SOLUTION: An antenna system is constituted by integrally forming a filter section 18 having an input ...


3
Mizutani Yasuhiko, Hirai Takami, Mizuno Kazuyuki, Arai Hiroyuki: Transmitter-receiver. NGK Insulators, Arai Hiroyuki, December 15, 2000: JP2000-349680 (101 worldwide citation)

PROBLEM TO BE SOLVED: To miniaturize the transmitter-receiver itself, to simplify the structure and to reduce the manufacture cost by realizing sufficient transmission reception isolation in spite of the simple configuration.SOLUTION: A transmission section 18 having a transmission filter section 14 ...


4
Kimura Hironobu, Hirai Takami, Mizutani Yasuhiko, Takeuchi Hirooto: Passive component. Soshin Electric, November 11, 2004: JP2004-320561 (7 worldwide citation)

PROBLEM TO BE SOLVED: To make a passive component small in itself while the packaging area of a module including the passive component is reduced and at the same time the size is reduced.SOLUTION: The conversion unit 24 of a passive component 10 includes a first line path 28 having one end connected ...


5
Mizutani Yasuhiko, Hirai Takami, Mizuno Kazuyuki: Stacked common unit and its manufacture. NGK Insulators, September 8, 2000: JP2000-244202 (4 worldwide citation)

PROBLEM TO BE SOLVED: To reduce the size of a resonator constituting a filter and a concentrated constant element constituting a branching filter circuit and to improve the shielding property between the filters. SOLUTION: A reception side filter 14 and a transmission side filter 16, whose center fr ...


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Kimura Hironobu, Hirai Takami, Mizutani Yasuhiko, Takeuchi Hirooto: Passive component. Soshin Electric, April 19, 2007: JP2007-104102 (3 worldwide citation)

PROBLEM TO BE SOLVED: To deal with a variety of use environments through a simple arrangement, especially by regulating the attenuation characteristics in low frequency region characteristics.SOLUTION: The passive component 10 comprises a non-balancing I/O system filter 18 having an input side reson ...


7
Mizutani Yasuhiko, Makino Hitoshi: (Ja) 揗拕郹擁, (En) Passive part. Soshin Electric, Mizutani Yasuhiko, Makino Hitoshi, CHIBA Yoshihiro, September 25, 2008: WO/2008/114681 (3 worldwide citation)

(EN) A first passive part (10A) forms a second parallel resonance circuit (16B) having a resonance frequency near the passing band among a first to a third parallel resonance circuit as follows. That is, the second parallel resonance circuit (16B) is formed at a position farthest from a first shield ...


8
Hirai Takami, Mizuno Kazuyuki, Mizutani Yasuhiko: Stacked type dielectric filter. NGK Insulators, June 27, 2001: EP1111707-A2 (2 worldwide citation)

A stacked type dielectric filter (10A) comprises two sets of resonators (14A, 14B) arranged in a dielectric substrate (12) constructed by laminating a plurality of dielectric layers, in which each of the resonators (14A, 14B) includes two resonance electrodes (16A, 16B) superimposed in a stacking di ...


9
Hirai Takami, Mizutani Yasuhiko, Mizuno Kazuyuki: Laminated dielectric filter and high frequency circuit board. NGK Insulators, January 21, 2000: JP2000-022404 (2 worldwide citation)

PROBLEM TO BE SOLVED: To attain the miniaturization of a device and to eliminate resonance frequency dispersion caused by substrate dimension fluctuation in a production process by parallelly arranging plural both end opening type 1/2 resonators in a dielectric substrate obtd. by laminating dielectr ...


10
Mizutani Yasuhiko, Hirai Takami, Mizuno Kazuyuki: Laminated dielectric filter. NGK Insulators, May 30, 2000: JP2000-151206 (2 worldwide citation)

PROBLEM TO BE SOLVED: To realize the suppression of inductive coupling between coaxial resonators, to adjust the position of an attenuation pole even if passband width is made constant and further to adjust resonator length (frequency). SOLUTION: This filter has a laminated body 12 where many dielec ...