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    • 1. 发明授权
    • Antenna device
    • 天线设备
    • US06707433B2
    • 2004-03-16
    • US10258484
    • 2002-10-25
    • Masataka OhtsukaIsamu ChibaShuji Urasaki
    • Masataka OhtsukaIsamu ChibaShuji Urasaki
    • H01Q2100
    • H01Q3/26H01Q21/061H01Q21/20H01Q21/22
    • A plurality of concentric circle array antennas each having a different radius are disposed on an identical plane, and a plurality of element antennas are arranged circumferentially in each of the concentric circle array antennas. The plurality of concentric circle array antennas are arranged at regular intervals d in most part thereof, and the concentric circle array antennas corresponding to a remaining part of the plurality of concentric circle array antennas are arranged at intervals d±0.4 to 0.6d. The radii of the part of plural concentric circles change by ±(0.4 to 0.6)d, so that it is possible to reduce a wide-angle side lobe.
    • 每个具有不同半径的多个同心圆阵列天线设置在同一平面上,并且多个元件天线在每个同心圆阵列天线中周向布置。 多个同心圆阵列天线在其大部分以规则的间隔d布置,并且与多个同心圆阵列天线的剩余部分相对应的同心圆阵列天线以间隔d±0.4至0.6d排列。 多个同心圆的一部分的半径变化±(0.4〜0.6)d,使得可以减小广角旁瓣。
    • 2. 发明授权
    • Composite antenna apparatus
    • 复合天线装置
    • US06222505B1
    • 2001-04-24
    • US09308333
    • 1999-05-19
    • Tsutomu EndoIsamu ChibaMasataka OhtsukaYoshihiko KonishiShuji Urasaki
    • Tsutomu EndoIsamu ChibaMasataka OhtsukaYoshihiko KonishiShuji Urasaki
    • H01Q136
    • H01Q21/30H01Q1/242H01Q1/243H01Q1/244H01Q5/35H01Q5/50H01Q9/30H01Q11/08H01Q21/29
    • A composite antenna apparatus comprising a balun connected to an inner conductor at the upper end of a coaxial line 11, one end of a helical element formed by a pair of wire conductors is connected to the balun, the other end is wound symmetrically around the coaxial line using the the coaxial line as a center so as to face the balun and is connected to the outer conductor 13 at the lower end of the coaxial line. The provision of an outer conductor connecting terminal connected to the outer conductor and an inner conductor connecting terminal connected to the inner conductor at the lower end of the coaxial line, allows the formation, on the same axis, of a helical antenna fed by the coaxial line via the helical element and a monopole antenna formed by the outer conductor of the coaxial line. Thereby equivalent gain in the horizontal plane and a reduction in the occupied volume is achieved.
    • 一种复合天线装置,包括连接到同轴线路11的上端的内导体的平衡 - 不平衡转换器,由一对线导体形成的螺旋形元件的一端连接到平衡 - 不平衡变换器,另一端围绕同轴线对称地卷绕 使用同轴线作为中心,以面对平衡 - 不平衡变换器,并连接到同轴线下端的外导体13。 设置连接到外导体的外导体连接端子和连接到同轴线下端的内导体的内导体连接端子允许在相同轴线上形成由同轴线馈送的螺旋天线 经由螺旋元件的线和由同轴线的外导体形成的单极天线。 因此,实现了水平面中的等效增益和占用体积的减小。
    • 7. 发明授权
    • Antenna apparatus
    • 天线装置
    • US07898488B2
    • 2011-03-01
    • US11970636
    • 2008-01-08
    • Nobuyasu TakemuraMasataka Ohtsuka
    • Nobuyasu TakemuraMasataka Ohtsuka
    • H01Q11/12
    • H01Q7/00H01Q1/2208H01Q9/42
    • A ground conductor constituting a bottom board and a loop antenna formed of a strip conductor formed separately from and around the ground conductor are provided on one face of a dielectric substrate, and a transmitter-receiver is connected to one end of the loop antenna serving as the power dispatching unit via a first matching circuit, and a second matching circuit is connected to the other end. A conductor formed of the strip conductor is provided on the dielectric substrate on the other face of the dielectric substrate so as to oppose the loop antenna with the intermediary of the dielectric substrate. A third matching circuit is connected to one end of the conductor and a fourth matching circuit is connected to the other end of the conductor. The loop antenna and the conductor are set to have a wavelength shorter than that of the frequency band to be used.
    • 构成底板的接地导体和由与接地导体分开形成的带状导体形成的环形天线设置在电介质基板的一个面上,并且发送器 - 接收器连接到环形天线的一端,用作 功率调度单元经由第一匹配电路和第二匹配电路连接到另一端。 由带状导体形成的导体设置在电介质基板的另一面上,与电介质基板相对的环形天线相对。 第三匹配电路连接到导体的一端,第四匹配电路连接到导体的另一端。 环形天线和导体被设置为具有比要使用的频带短的波长的波长。
    • 10. 发明授权
    • Antenna apparatus
    • 天线装置
    • US5926136A
    • 1999-07-20
    • US852599
    • 1997-05-07
    • Masataka OhtsukaYoshihiko KonishiMakoto MatsunagaShintaro Nakahara
    • Masataka OhtsukaYoshihiko KonishiMakoto MatsunagaShintaro Nakahara
    • H01Q15/08H01Q1/32H01Q3/01H01Q3/02H01Q9/04H01Q13/08
    • H01Q9/0407H01Q3/02H01Q9/0414
    • In an antenna apparatus in which n dielectric layers with .epsilon..sub.r1 -.epsilon..sub.rn in dielectric constants are respectively stacked between a ground plate and a major radiating conductor, the thickness t.sub.1 -t.sub.n of the dielectric layers are determined so as to satisfy substantially the following equations:(t.sub.1 +t.sub.2 + . . . +t.sub.n)/(t.sub.1 /.epsilon..sub.r1 +t.sub.2 /.epsilon..sub.r2 + . . . +t.sub.n /.epsilon..sub.rn)=.epsilon..sub.reff, andt.sub.1 +t.sub.2 + . . . t.sub.n =t.sub.minwith respect to a dielectric constant .epsilon..sub.reff of the antenna defined for a desired beam width, and the minimum value t.sub.min of the dielectric layers capable of ensuring a desired operation band and low reflection losses in this dielectric constant .epsilon..sub.reff. Thus, the thinnest antenna structure which can ensure a desired radiation in directions of low elevation angles, and desired operation bands and low reflection losses can be made.
    • 在其中介电常数中的ε1〜ε1的n个电介质层分别层叠在接地板和主辐射导体之间的天线装置中,电介质层的厚度t1-tn被确定为基本上满足以下等式 :(t1 + t2 + ... + tn)/(t1 / epsilon r1 + t2 / epsilon r2 + ... + tn / epsilon rn)=εreff和t1 + t2 +。 。 。 相对于为期望波束宽度定义的天线的介电常数εreff,以及能够确保期望的操作频带的介电层的最小值tmin和在该介电常数εref中的低反射损耗,tn = tmin。 因此,可以制造能够确保在低仰角方向上期望的辐射以及期望的操作带和低反射损耗的最薄的天线结构。