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    • 41. 发明申请
    • ANTENNA DEVICE AND WIRELESS COMMUNICATION APPARATUS
    • 天线设备和无线通信设备
    • US20090273531A1
    • 2009-11-05
    • US12504367
    • 2009-07-16
    • Kenichi IshizukaKazunari KawahataNobuhito TsubakiShigeyuki FujiedaShinichi Nakano
    • Kenichi IshizukaKazunari KawahataNobuhito TsubakiShigeyuki FujiedaShinichi Nakano
    • H01Q1/38H01Q9/00
    • H01Q1/243H01Q1/38H01Q1/523H01Q5/40H01Q9/145H01Q9/42H01Q21/28H01Q23/00
    • A compact and low-cost antenna device in which no interference occurs even when many antenna units corresponding to various systems are mounted close together in a small area, and a wireless communication apparatus including the antenna device. An antenna device includes plural antenna units mounted on a single dielectric base. A first antenna unit having a lowest fundamental frequency is disposed at a left end of a non-ground region, a second antenna unit having a highest fundamental frequency of the plurality of the antenna units is disposed at a right end of the non-ground region, and a third antenna unit having a fundamental frequency between those of the first antenna unit and the second antenna unit is disposed between the first and second antenna units. A current-density control coil is connected between a first radiation electrode and a power feeder of the first antenna unit, while a reactance circuit is disposed in the middle of the first radiation electrode. Notches may be disposed between the first radiation electrode and a second radiation electrode and between the first radiation electrode and a third radiation electrode.
    • 即使在与各种系统相对应的许多天线单元紧密地一起安装在小区域中的情况下也不发生干扰的紧凑且低成本的天线装置,以及包括该天线装置的无线通信装置。 天线装置包括安装在单个电介质基座上的多个天线单元。 具有最低基频的第一天线单元设置在非接地区域的左端,具有多个天线单元的最高基频的第二天线单元设置在非接地区域的右端 并且具有在第一天线单元和第二天线单元之间的基频的第三天线单元设置在第一和第二天线单元之间。 电流密度控制线圈连接在第一辐射电极和第一天线单元的馈电器之间,而电抗电路设置在第一辐射电极的中间。 凹口可以设置在第一辐射电极和第二辐射电极之间以及第一辐射电极和第三辐射电极之间。
    • 42. 发明授权
    • Antenna structure and communication apparatus including the same
    • 天线结构及其通信装置
    • US07382319B2
    • 2008-06-03
    • US10581803
    • 2004-11-30
    • Kazunari KawahataJunichi Kurita
    • Kazunari KawahataJunichi Kurita
    • H01Q1/38H01Q1/24H01Q13/10
    • H01Q1/243H01Q5/371H01Q5/378H01Q5/385H01Q5/392H01Q9/0421H01Q9/0442H01Q19/005
    • In an antenna structure including a feeding radiation electrode and a non-feeding radiation electrode that are electromagnetically coupled to each other, due to formation of a main slit, the feeding radiation electrode includes a U-turn portion in the middle of a path circumventing the main slit from a feeding end to an open end. A sub-slit for forming an open stub that is connected to the U-turn portion and that provides the U-turn portion with electrostatic capacitance is formed in the feeding radiation electrode. By changing a value of the electrostatic capacitance to be provided by the open stub to the U-turn portion of the feeding radiation electrode, variable control of a higher-order resonant frequency F2 of the feeding radiation electrode 2 can be achieved while suppressing fluctuations in a resonant state (for example, a fundamental resonant frequency F1 and a Q-value) of a fundamental resonant frequency band of the feeding radiation electrode, in an electromagnetic coupling state between the feeding radiation electrode and the non-feeding radiation electrode, and in an impedance matching state.
    • 在包括馈电辐射电极和非馈电辐射电极的天线结构中,由于主狭缝的形成,馈电辐射电极由于形成主狭缝而形成电磁耦合,所述馈电辐射电极包括绕路径的中间的U形转弯部分 从进料端到开口端的主狭缝。 在馈电辐射电极中形成用于形成连接到U形转弯部分并且提供U形转弯部分具有静电电容的开放短截线的子狭缝。 通过将由开放短截线提供的静电电容的值改变为馈送辐射电极的U形转弯部分,可以在抑制波动的同时实现馈送辐射电极2的高次谐振频率F 2的可变控制 在馈电辐射电极和非馈电辐射电极之间的电磁耦合状态下,在馈电辐射电极的基本共振频带的共振状态(例如,基本共振频率F 1和Q值) 并处于阻抗匹配状态。
    • 43. 发明申请
    • ANTENNA DEVICE AND WIRELESS COMMUNICATION APPARATUS
    • 天线设备和无线通信设备
    • US20080079642A1
    • 2008-04-03
    • US11954521
    • 2007-12-12
    • Kenichi IshizukaKazunari Kawahata
    • Kenichi IshizukaKazunari Kawahata
    • H01Q1/24
    • H01Q1/38H01Q1/243H01Q5/371H01Q9/42
    • A compact and thin antenna device can be mounted in a small area of a substrate and has a multiband capability adaptable to various applications. The antenna device includes a chip antenna, an antenna element, and a chip antenna. The chip antenna is produced by forming a radiation electrode on the surface of a dielectric base, and mounting a frequency variable circuit on the radiation electrode. Thus, it becomes possible to obtain a resonant frequency f1 of the chip antenna and further to vary the resonant frequency f1. The antenna element is produced by adding an auxiliary element to an additional radiation electrode for the chip antenna. The chip antenna includes a radiation electrode on a dielectric base and a conductive pattern. Thus, a resonant frequency f2 and a resonant frequency f3 of the antenna element and the chip antenna, respectively, can be obtained.
    • 紧凑而薄的天线装置可以安装在基板的小区域中,并且具有适用于各种应用的多频带能力。 天线装置包括芯片天线,天线元件和芯片天线。 芯片天线通过在电介质基体的表面上形成辐射电极,并在频率可变电路上安装频率可变电路来制造。 因此,可以获得芯片天线的谐振频率f 1并进一步改变谐振频率f 1。 通过将辅助元件添加到用于芯片天线的附加辐射电极来产生天线元件。 芯片天线包括在电介质基底上的辐射电极和导电图案。 因此,可以获得天线元件和芯片天线的共振频率f 2和谐振频率f 3。
    • 48. 发明授权
    • Antenna formed of multiple dielectric substrates including shielded LC
filter
    • 由包括屏蔽LC滤波器在内的多个介质基片形成的天线
    • US5898403A
    • 1999-04-27
    • US427415
    • 1995-04-24
    • Yasuaki SaitohKazunari Kawahata
    • Yasuaki SaitohKazunari Kawahata
    • H01Q23/00H01Q1/24H01Q1/38H01Q13/08H03H7/01
    • H01Q1/243H01Q1/38
    • An antenna device has an antenna part and a filter part combined into a single unit. The antenna part has a radiating electrode formed on a surface of layered dielectric substrates and a grounding electrode formed inside the layered structure. The filter part is formed below the antenna part and includes shield electrodes, capacitor electrodes and coil electrodes. A feed point on the antenna part and an input section of the filter part are electrically connected to each other through a roughhole, and external electrodes are formed on side surfaces of the multi-layered structure of the dielectric substrates, connecting the grounding electrode of the antenna part and the output section of the filter part. A slot electrode having a slot formed therethrough and a strip line extending perpendicularly to the slot may be inserted between the radiating electrode and the grounding electrode of the antenna part.
    • 天线装置具有天线部分和组合成单个单元的滤波器部分。 天线部具有形成在分层电介质基板的表面上的辐射电极和形成在分层结构内的接地电极。 滤波器部分形成在天线部分下方,并且包括屏蔽电极,电容器电极和线圈电极。 天线部分的馈电点和滤波器部分的输入部分通过粗孔彼此电连接,并且在电介质基板的多层结构的侧表面上形成外部电极,将接地电极 天线部分和过滤器部分的输出部分。 具有穿过其形成的狭缝的槽电极和垂直于槽延伸的带状线可以插入在辐射电极和天线部分的接地电极之间。
    • 50. 发明授权
    • Surface mounting antenna and communication apparatus using the same
    • 表面贴装天线及使用其的通信装置
    • US5696517A
    • 1997-12-09
    • US716697
    • 1996-09-17
    • Kazunari KawahataKen Okada
    • Kazunari KawahataKen Okada
    • H01Q1/22H01Q1/24H01Q1/36H01Q1/38H01Q9/04
    • H01Q1/2283H01Q1/22H01Q1/243H01Q1/36H01Q1/38H01Q9/0421
    • A surface mounting antenna in which easy formation of a radiation electrode can be achieved by forming it on the surface of a substrate, and also the antenna can be downsized by bending the radiation electrode. A communication apparatus using the above antenna is also disclosed. A ground terminal and a feeding terminal are separately disposed on one lateral surface. A loading capacitor electrode is formed on another lateral surface opposedly facing the surface on which the ground terminal and the feeding terminal are disposed. A stripline radiation electrode is further formed on the obverse surface of the substrate and is connected at the respective ends to the ground terminal and the loading capacitor electrode. A feeding electrode for connecting the matching portion of the radiation electrode and the feeding terminal is disposed on the obverse surface of the substrate.
    • 通过将其形成在基板的表面上,能够容易地形成放射电极的表面安装天线,也可以通过使辐射电极弯曲而使天线小型化。 还公开了使用上述天线的通信装置。 接地端子和馈电端子分别设置在一个侧面上。 负载电容器电极形成在面对设置有接地端子和馈电端子的表面的另一侧面上。 带状线辐射电极进一步形成在基板的正面上,并在各自的端部连接到接地端子和负载电容器电极。 用于连接辐射电极的匹配部分和馈电端子的馈电电极设置在衬底的正面上。