Atokawa
Masayuki Atokawa, Ishikawa-Ken JP
Patent application number | Description | Published |
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20090267708 | Dielectric Filter - A dielectric filter having a dielectric block disposed on a mount board. The dielectric block includes inner conductor holes having open ends on the front surface of the dielectric block. Input/output electrodes are disposed on the undersurface of the dielectric block. Each of the input/output electrodes extends from the boundary between a side surface and the undersurface of the dielectric block to the boundary between the front surface and the undersurface of the dielectric block. An outer conductor includes undersurface electrode corner portions and an undersurface electrode main portion. Each of the undersurface electrode corner portions is disposed at a corner formed by the front surface and one of the side surfaces of the dielectric block. | 10-29-2009 |
Masayuki Atokawa, Ishikawa-Gun JP
Patent application number | Description | Published |
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20090167463 | Dielectric Filter - A dielectric filter having inner-conductor holes penetrating through a dielectric block from a first surface to a second surface thereof. An outer conductor and input/output electrodes are formed on an outer surface of the dielectric block. A side of each of the input/output electrodes facing the first surface is substantially in parallel to the first surface, and an intersection of a side facing the second surface and a side facing a sixth surface is tapered. With such a configuration, an attenuation characteristic at an attenuation band is improved by making the attenuation characteristic less likely to receive an influence of a TE mode. | 07-02-2009 |
Masayuki Atokawa, Kyoto-Fu JP
Patent application number | Description | Published |
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20110187603 | DIELECTRIC ANTENNA AND WIRELESS COMMUNICATION DEVICE - A dielectric antenna and wireless communication device including the dielectric antenna includes a molded body formed of a composite material of dielectric ceramic and a resin, and a flexible substrate including a radiation electrode. The radiation electrode is excitable at frequencies of 500 MHz to 5 MHz. The composition ratio and the like of the molded body are determined so that the Q value (Qd) thereof due to dielectric loss falls within the range of about 500 to about 1500. | 08-04-2011 |
20120306703 | ANTENNA AND WIRELESS COMMUNICATION DEVICE - This disclosure provides an antenna and a wireless communication device that includes the antenna in which a high-order mode can be controlled while maintaining good radiation characteristics in both the fundamental mode and high-order mode. The antenna has a radiation electrode provided on a surface of a dielectric substrate and a branch electrode portion that branches from the radiation electrode portion at a branch point near the feeding port toward a vicinity of a position of the radiation electrode at which a maximum voltage of a high-order mode is generated. | 12-06-2012 |
20130021211 | ANTENNA AND MOBILE COMMUNICATION APPARATUS - This disclosure provides an antenna and mobile communication apparatus including an antenna, where the antenna includes a base member and a radiation electrode provided on the base member. The radiation electrode includes a feeding portion and an open end, and at least one phase control element provided between the feeding portion and the open end. With the length of the lengthwise direction of the base member taken as L, and with the wavelength on the base member of the usable frequency range taken as λ, L<λ/5. Through this configuration, it is possible to configure an antenna that can be disposed within a limited amount of space and that can obtain high radiation efficiency, and a mobile communication apparatus that includes the antenna and thus has high communication capabilities. | 01-24-2013 |