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    • 1. 发明授权
    • Mobile radio apparatus capable of adaptive impedance matching
    • 能够进行自适应阻抗匹配的移动无线电设备
    • US07528674B2
    • 2009-05-05
    • US10594522
    • 2006-01-24
    • Akira KatoKoichi OgawaHiroshi IwaiAtsushi Yamamoto
    • Akira KatoKoichi OgawaHiroshi IwaiAtsushi Yamamoto
    • H03H7/38
    • H04B1/18
    • There is provide a mobile radio apparatus capable of suppressing a mismatching loss, and increasing a transmission/reception sensitivity by means of instantly and adaptively matching the impedance between the antenna and the transmission/reception circuit whatever situation a mobile radio apparatus, such as a mobile phone or the like, may be. In a mobile radio apparatus (1), when starting control of the matching circuit (102), a control section (105) evaluates an initial chromosome stored in a storage section (106), and if there is an initial chromosome for providing an impedance matching, controls the matching circuit (102) so as to have a load value corresponding to this initial chromosome. If there is no initial chromosome for providing the impedance matching, the control section (105) evolves the initial chromosome with a genetic algorithm, derives a chromosome for providing the impedance matching, and controls the matching circuit (102) so as to have a load value corresponding to the derived chromosome.
    • 提供一种能够抑制失配损失的移动无线电设备,并且通过立即且自适应地匹配天线和发送/接收电路之间的阻抗来增加发送/接收灵敏度,无论移动无线电设备如移动 电话等,可能是。 在移动无线电设备(1)中,当启动匹配电路(102)的控制时,控制部分(105)评估存储在存储部分(106)中的初始染色体,并且如果存在用于提供阻抗的初始染色体 匹配,控制匹配电路(102)以具有对应于该初始染色体的负载值。 如果没有用于提供阻抗匹配的初始染色体,则控制部分(105)用遗传算法演化初始染色体,导出染色体以提供阻抗匹配,并且控制匹配电路(102)以具有负载 对应于衍生染色体的值。
    • 5. 发明授权
    • Antenna and wireless device incorporating the same
    • 天线和无线设备结合在一起
    • US06633261B2
    • 2003-10-14
    • US09988716
    • 2001-11-20
    • Hiroshi IwaiAtsushi YamamotoKoichi OgawaShinji KamaeguchiTsukasa TakahashiKenichi Yamada
    • Hiroshi IwaiAtsushi YamamotoKoichi OgawaShinji KamaeguchiTsukasa TakahashiKenichi Yamada
    • H01Q138
    • H01Q1/243H01Q9/0421
    • An antenna is provided which can reconcile a low antenna resonance frequency and broadband frequency characteristics, while attaining stable impedance characteristics and enhanced design flexibility. A conductive plate is coupled to a conductive base plate via a first metal lead. A voltage is applied to the conductive plate from a supply point via a second metal lead. A conductive wall is electrically coupled to the conductive plate at one end thereof. An electromagnetic field coupling adjustment plate is electrically coupled to the other end of the conductive wall. The electromagnetic field coupling adjustment plate is disposed so as to leave a predetermined interspace between itself and the conductive base plate, thereby creating a capacitor in conjunction with the conductive base plate. The conductive wall and the electromagnetic field coupling adjustment plate are disposed so as to maximize a path length from a shot-circuiting portion (at which the conductive plate is coupled to the first metal lead) to an open end of the electromagnetic field coupling adjustment plate. Preferably, a current path extending from a supply portion (at which the conductive plate is coupled to the second metal lead) to the short-circuiting portion has a length equal to a ½ wavelength for a desired resonance frequency.
    • 提供一种能够调和低天线谐振频率和宽带频率特性的天线,同时获得稳定的阻抗特性和增强的设计灵活性。 导电板通过第一金属引线耦合到导电基板。 电压通过第二金属引线从供电点施加到导电板。 导电壁在其一端电耦合到导电板。 电磁场耦合调节板电耦合到导电壁的另一端。 电磁场耦合调节板被设置成在其与导电基板之间留出预定的间隙,从而与导电基板一起形成电容器。 导电壁和电磁场耦合调节板被设置成使从射出电路部分(导电板耦合到第一金属引线的)到电磁场耦合调节板的开口端的路径长度最大化 。 优选地,从供电部分(其中导电板耦合到第二金属引线)延伸到短路部分的电流路径具有等于所需谐振频率的1/2波长的长度。
    • 6. 发明授权
    • Antenna
    • 多谐振天线
    • US06538618B2
    • 2003-03-25
    • US09975517
    • 2001-10-12
    • Atsushi YamamotoHiroshi IwaiKoichi Ogawa
    • Atsushi YamamotoHiroshi IwaiKoichi Ogawa
    • H01Q142
    • H01Q13/18H01Q9/0421H01Q9/30H01Q9/38H01Q13/10H01Q13/106
    • An antenna is provided having a relatively simple structure as arranged capable of operating at desired frequencies. The antenna has a chassis having a grounding conductor provided as a bottom surface, a ceiling conductor provided as a top surface opposite to the grounding conductor, and side conductors provided as antenna sides. At least one opening is provided in a part of said chassis, which opens for radiation of electric waves. A feeding point provided on the grounding conductor for connection to a power supply via a predetermined feeding line from the outside. An antenna element connected to the feeding point at one end while being connected to the ceiling conductor via a frequency selectable circuit at the other end, and surrounded by the side conductors.
    • 提供具有相对简单结构的天线,其布置能够以期望的频率运行。 该天线具有底架,其具有设置为底面的接地导体,设置为与接地导体相对的顶表面的天花板导体,以及设置为天线侧的侧导体。 至少一个开口设置在所述底盘的一部分中,该开口用于电波的辐射。 馈电点设置在接地导体上,用于经由外部经过预定馈线从电源连接。 天线元件在一端连接到馈电点,同时通过另一端的频率可选择电路连接到天花板导体,并被侧导体包围。
    • 7. 发明授权
    • Monopole antenna
    • 单极天线
    • US06188366B1
    • 2001-02-13
    • US09324334
    • 1999-06-02
    • Atsushi YamamotoToshimitsu MatsuyoshiKoichi Ogawa
    • Atsushi YamamotoToshimitsu MatsuyoshiKoichi Ogawa
    • H01Q100
    • H01Q9/36H01Q5/321
    • A disk-shaped conductor 22, a ring-shaped conductor 24 and a ring-shaped conductor 26 are arranged in that order on the same plane. One end of a linear conductor 21 is connected perpendicularly to the center of the disk-shaped conductor 22, and the outer edge of the disk-shaped conductor 22 is connected to the inner edge of the ring-shaped conductor 24 via an anti-resonance circuit 23. Moreover, the outer edge of the ring-shaped conductor 24 is connected to the inner edge of the ring-shaped conductor 26 via an anti-resonance circuit 25. Due to the anti-resonance circuits 23 and 25, electrical blocking can be attained, so that an electromagnetic wave of a first frequency f1 is excited by the system extending from the linear conductor 21 to the disk-shaped conductor 22, an electromagnetic wave of a second frequency f2 is excited by the system extending from the linear conductor 21 to the ring-shaped conductor 24, and an electromagnetic wave of a third frequency f3 is excited by the system extending from the linear conductor 21 to the ring-shaped conductor 26. Thus, a small monopole antenna can be attained that has a simple structure and can be operated at a plurality of frequencies.
    • 盘状导体22,环状导体24和环状导体26依次配置在同一平面上。 线状导体21的一端与盘状导体22的中心垂直地连接,盘状导体22的外缘经由反谐振器连接到环状导体24的内缘 此外,环形导体24的外边缘经由反谐振电路25连接到环形导体26的内边缘。由于反谐振电路23和25,电阻可以 使得第一频率f1的电磁波被从线性导体21延伸到盘状导体22的系统激励,第二频率f2的电磁波被从线性导体延伸的系统激励 21到环形导体24,并且第三频率f3的电磁波被从线性导体21延伸到环形导体26的系统激励。因此,可以获得小型单极天线,其具有 简单的结构,可以在多个频率下工作。
    • 10. 发明申请
    • Mobile Radio Appartus Capable of Adaptive Impedace Matching
    • 移动无线电Appartus能够进行自适应匹配
    • US20070210899A1
    • 2007-09-13
    • US10594522
    • 2006-01-24
    • Akira KatoKoichi OgawaHiroshi IwaiAtsushi Yamamoto
    • Akira KatoKoichi OgawaHiroshi IwaiAtsushi Yamamoto
    • G05B11/01
    • H04B1/18
    • There is provide a mobile radio apparatus capable of suppressing a mismatching loss, and increasing a transmission/reception sensitivity by means of instantly and adaptively matching the impedance between the antenna and the transmission/reception circuit whatever situation a mobile radio apparatus, such as a mobile phone or the like, may be. In a mobile radio apparatus (1), when starting control of the matching circuit (102), a control section (105) evaluates an initial chromosome stored in a storage section (106), and if there is an initial chromosome for providing an impedance matching, controls the matching circuit (102) so as to have a load value corresponding to this initial chromosome. If there is no initial chromosome for providing the impedance matching, the control section (105) evolves the initial chromosome with a genetic algorithm, derives a chromosome for providing the impedance matching, and controls the matching circuit (102) so as to have a load value corresponding to the derived chromosome.
    • 提供一种能够抑制失配损失的移动无线电设备,并且通过立即且自适应地匹配天线和发送/接收电路之间的阻抗来增加发送/接收灵敏度,无论移动无线电设备如移动 电话等,可能是。 在移动无线电设备(1)中,当启动匹配电路(102)的控制时,控制部分(105)评估存储在存储部分(106)中的初始染色体,并且如果存在用于提供阻抗的初始染色体 匹配,控制匹配电路(102)以具有对应于该初始染色体的负载值。 如果没有用于提供阻抗匹配的初始染色体,则控制部分(105)用遗传算法演化初始染色体,导出染色体以提供阻抗匹配,并且控制匹配电路(102)以具有负载 对应于衍生染色体的值。