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    • 2. 发明授权
    • Helical antenna and method of making same
    • 螺旋天线及其制作方法
    • US5903242A
    • 1999-05-11
    • US718967
    • 1996-09-26
    • Teruhisa TsuruHarufumi MandaiSeiji KanbaKoji ShirokiKenji Asakura
    • Teruhisa TsuruHarufumi MandaiSeiji KanbaKoji ShirokiKenji Asakura
    • H01Q13/24H01Q1/36H01Q1/38H01Q1/40H01Q13/26
    • H01Q1/38H01Q1/362
    • A helical antenna is provided in which a predetermined resonance frequency can be determined at the design stage. The helical antenna includes a conductor which is formed from copper or a copper alloy inside a base in the shape of a rectangular parallelopiped formed from a dielectric material having barium oxide, aluminum oxide and silica as main constituents and which is wound in a helical shape along the length of the base. In such a case, the resonance frequency f0 of the helical antenna and the inductance components L of the conductor satisfy the relationship: ln (L)=A0+A1.times.ln (f0), where ln is a natural logarithm, and A0 and A1 are constants. One end of the conductor is extended onto the surface of the base and forms a power feeding terminal connected to a power feeding terminal formed on the surface of the base for applying a voltage to the conductor, and the other end thereof forms a free end inside the base.
    • 提供螺旋天线,其中可以在设计阶段确定预定的共振频率。 螺旋天线包括由铜或铜合金形成的导体,该铜或铜合金形成为由氧化钡,氧化铝和二氧化硅作为主要成分的电介质材料形成的矩形平行六面体形状,并且沿着 基座的长度。 在这种情况下,螺旋天线的谐振频率f0和导体的电感分量L满足关系:ln(L)= A0 + A1xln(f0)其中ln是自然对数,A0和A1是常数 。 导体的一端延伸到基座的表面上,并形成一个馈电端子,该馈电端子连接到形成在基座的表面上的馈电端子,用于向导体施加电压,另一端在内部形成自由端 的基地。
    • 3. 发明授权
    • Antenna device
    • 天线设备
    • US06222489B1
    • 2001-04-24
    • US09525821
    • 2000-03-15
    • Teruhisa TsuruHarufumi MandaiKoji ShirokiKenji AsakuraSeiji Kanba
    • Teruhisa TsuruHarufumi MandaiKoji ShirokiKenji AsakuraSeiji Kanba
    • H01Q136
    • H01Q1/38H01Q1/362H01Q9/285
    • An antenna device, comprising an antenna unit including basic body comprising at least one of dielectric ceramic and magnetic ceramic, at least one conductor disposed at least one of inside and on a surface of the basic body, and a feeding electrode for applying a voltage to the conductor disposed on the surface of the basic body; a mounting board on which the antenna unit is mounted; a ground part in association with the mounting board and adapted to resonate with the antenna unit; and a length in the polarization direction of a radio wave of the ground part being about &lgr;/4 or more, where &lgr; is a wavelength of the radio wave, the basic body comprising a first generally planar sheet having a plurality of spaced, first conductors formed on one major surface thereof and a second generally planar sheet having a plurality of spaced second conductors formed on one major surface thereof; the first and second generally planar sheets being laminated together to form an elongated structure wherein respective pairs of the first and second conductors are coupled to one another to form respective spiral loops of a spiral antenna so that a central axis of the spiral antenna extends generally parallel to a longitudinal direction of the elongated structure; each of the sheets being formed of a material having a permeability of 1
    • 一种天线装置,包括天线单元,所述天线单元包括基体,所述天体单元包括介电陶瓷和磁性陶瓷中的至少一种,至少一个布置在所述基体的内部和表面中的至少一个导体,以及馈电电极, 所述导体设置在所述基体的表面上; 安装天线单元的安装板; 与安装板相关联并适于与天线单元谐振的接地部分; 并且所述接地部分的无线电波的极化方向上的长度约为lambd / 4或更大,其中lambd是所述无线电波的波长,所述基体包括具有多个间隔开的第一导体 在其一个主表面上形成有第二大体上平坦的片,其具有形成在其一个主表面上的多个间隔开的第二导体; 所述第一和第二大体平坦的片材被层压在一起以形成细长的结构,其中相应的第一和第二导体的对彼此耦合以形成螺旋形天线的相应的螺旋环,使得螺旋天线的中心轴线大致平行地延伸 到所述细长结构的纵向方向; 每个片材由导磁率为1 <7或介电常数εi为1