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    • 1. 发明授权
    • Dielectrically loaded antenna and an antenna assembly
    • 电感天线和天线组件
    • US08497815B2
    • 2013-07-30
    • US11998471
    • 2007-11-28
    • Oliver Paul Leisten
    • Oliver Paul Leisten
    • H01Q1/36
    • H01Q11/08
    • A dielectrically loaded quadrifilar helical antenna has four quarter turn helical elements centered on a common axis. Each helical element is metallised on the outer cylindrical surface of a solid dielectric core and each has a feed end and a linked end, the linked ends being connected together by a linking conductor encircling the core. At an operating frequency of the antenna the helical elements and the linking conductor together form two conductive loops each having an electrical length in the region of (2n−1)/2 times the wavelength, where n is an integer. Such an antenna tends to present a source impedance of at least 500 ohms to receiver circuitry to which it is connected. The invention includes an antenna assembly including a dielectrically antenna and a receiver having a radio frequency front-end stage with a differential input coupled to the feed ends of the helical elements.
    • 介质加载的四边形螺旋天线具有以公共轴为中心的四分之四转的螺旋形元件。 每个螺旋元件在固体电介质芯的外圆柱形表面上金属化,并且每个具有馈电端和连接端,所述连接端通过环绕芯的连接导体连接在一起。 在天线的工作频率下,螺旋元件和连接导体一起形成两个导电回路,每个导电回路具有在波长为(2n-1)/ 2倍的区域中的电长度,其中n为整数。 这样的天线趋向于向其所连接的接收器电路提供至少500欧姆的源阻抗。 本发明包括一种包括介电天线和接收器的天线组件,所述天线具有射频前端级,其具有耦合到所述螺旋元件的馈送端的差分输入。
    • 2. 发明申请
    • ANTENNA
    • 天线
    • US20130135169A1
    • 2013-05-30
    • US13682557
    • 2012-11-20
    • Sarantel Limited
    • Andrew Robert Christie
    • H01Q1/38H01Q1/50H01P11/00H01Q1/52
    • H01Q1/38H01P11/00H01Q1/243H01Q1/50H01Q1/526H01Q11/08Y10T29/49016
    • This application relates to antennas including, for example, an antenna for operation at a frequency in excess of 200 MHz comprising: an insulative substrate having a central axis, an axial passage extending therethrough and an outer substrate surface which extends around the axis; a three-dimensional antenna element structure including at least one pair of axially coextensive elongate conductive antenna elements on or adjacent the outer substrate surface; and an axial feeder structure which extends through the passage and comprises an elongate laminate board wherein the laminate board proximal end portion includes lateral extensions projecting in opposite lateral directions, and wherein, adjacent the laminate board proximal end portion, the substrate has recesses on opposite sides of the axis which receive at least edge parts of the said lateral extensions of the laminate board proximal end portion.
    • 本申请涉及包括例如在超过200MHz的频率下操作的天线的天线,包括:具有中心轴线的绝缘基板,延伸穿过其中的轴向通道和围绕该轴线延伸的外部基板表面; 三维天线元件结构,其包括在所述外基板表面上或邻近所述外基板表面上的至少一对轴向共延伸的细长导电天线元件; 以及延伸穿过所述通道并且包括细长层压板的轴向进料器结构,其中所述层压板近端部分包括在相反的横向方向上突出的侧向延伸部,并且其中,在所述层压板近端部分附近,所述基板在相对侧上具有凹部 所述轴线接收所述层压板近端部分的所述侧向延伸部的至少边缘部分。
    • 5. 发明授权
    • Dielectrically-loaded antenna
    • 负载天线
    • US08279135B2
    • 2012-10-02
    • US12584663
    • 2009-09-09
    • David Michael WitherOliver Paul Leisten
    • David Michael WitherOliver Paul Leisten
    • H01Q1/36
    • H01Q11/08H01Q1/242
    • A dielectrically loaded backfire helical antenna has a cylindrical ceramic core and a feed structure which passes axially through the core to a distal end face of the core where it is connected to helical conductors located on the outside of the core. Opening out on the proximal end face of the core is a cavity which is coaxial with the feed structure. A conductive balun layer encircling a portion of the core extends over the proximal end face of the core and the wall of the cavity to connect the helical elements to the feeder structure when it emerges into the cavity. The presence of the cavity and accommodating some of the length of the balun in the cavity allows a reduction in the size and weight of a dielectrically loaded backfire antenna.
    • 介电加载的回火螺旋天线具有圆柱形陶瓷芯和馈送结构,该馈电结构轴向地穿过芯到达芯的远端面,其中它连接到位于芯的外部的螺旋导体。 在芯的近端面上开口是与进料结构同轴的空腔。 围绕芯的一部分的导电平衡 - 不平衡变压器层在芯的近端面和空腔的壁上延伸,以将螺旋元件连接到馈送器结构,当它进入空腔时。 空腔的存在并且容纳空腔中的平衡 - 不平衡变换器的一些长度的一部分允许减小背景反馈天线的尺寸和重量。
    • 7. 发明申请
    • Multifilar Antenna
    • 多翼天线
    • US20110001680A1
    • 2011-01-06
    • US12829774
    • 2010-07-02
    • Oliver Paul Leisten
    • Oliver Paul Leisten
    • H01Q1/36H01Q1/50
    • H01Q11/08
    • In a dielectrically-loaded multifilar helical antenna, a conductive phasing ring is arranged between and couples together feed nodes and the helical radiating elements. The phasing ring includes an annular conductive path having an electrical length equivalent to a full wavelength at the operating frequency so as to be resonant at that frequency. The helical elements are coupled to the outer periphery of the phasing ring at respective spaced apart coupling locations. The helical elements may include open-circuit or closed-circuit elongate conductive tracks, or a combination of both. In the case of the helical elements being closed-circuit tracks, these tracks are interconnected by a second resonant ring, which is resonant at the same frequency as or a different frequency from the first resonant ring. The invention is applicable to both end-fire and back-fire helical antennas.
    • 在介电加载的多相螺旋天线中,导电相位环布置在馈电节点和螺旋辐射元件之间并耦合在一起。 相控环包括环形导电路径,其具有等效于工作频率下的全波长的电长度,以便以该频率谐振。 螺旋元件在相应间隔开的联接位置处联接到定相环的外周。 螺旋元件可以包括开路或闭路细长导电轨道,或两者的组合。 在螺旋元件是闭路轨道的情况下,这些轨道通过第二谐振环互连,第二共振环以与第一谐振环相同的频率或与其不同的频率谐振。 本发明适用于端火和反火螺旋天线。
    • 8. 发明授权
    • Dielectrically-loaded antenna
    • 负载天线
    • US07675477B2
    • 2010-03-09
    • US12005127
    • 2007-12-20
    • Oliver Paul Leisten
    • Oliver Paul Leisten
    • H01Q1/36
    • H01Q11/08
    • A dielectrically-loaded helical antenna has a cylindrical ceramic core bearing metallised helical antenna elements which are coupled to a coaxial feeder structure passing axially through the core. Secured to an end face of the core is a circular laminate board having feed-through holes for receiving the end portions of feeder structure conductors. Coupling conductors on the face of the board that faces the core extend radially outwardly from connections with the feeder structure conductors to plated edge portions of the board. The board is of a diameter substantially equal to that of the core and bridging conductors overlying the plated edge portions connect the coupling conductors to the helical elements. The board incorporates a matching network.
    • 介电加载的螺旋天线具有圆柱形陶瓷芯,其具有金属化的螺旋天线元件,其耦合到轴向通过芯的同轴馈线结构。 固定到芯的端面的是具有用于接收馈送器结构导体的端部的馈通孔的圆形层压板。 板的面对芯的耦合导体从与馈电结构导体的连接径向向外延伸到电路板的电镀边缘部分。 板的直径基本上等于芯的直径,并且覆盖电镀边缘部分的桥接导体将耦合导体连接到螺旋元件。 该板包含一个匹配的网络。
    • 9. 发明授权
    • Antenna system
    • 天线系统
    • US07528796B2
    • 2009-05-05
    • US11803405
    • 2007-05-10
    • Oliver Paul Leisten
    • Oliver Paul Leisten
    • H01Q1/36
    • H01Q11/08H01Q1/242H01Q1/362H01Q1/50
    • An antenna system for operation at frequencies in excess of 200 MHz, comprises an antenna, a transmission line and a receiver stage, the transmission line electrically connecting the antenna to an input of the receiver stage, and the antenna having: an antenna core of a solid insulative material having a relative dielectric constant greater than 5, the material of the core occupying the major part of the volume defined by the core outer surface, and a three-dimensional antenna element structure disposed on or adjacent the outer surface of the core; wherein the antenna is fed by the transmission line at a proximal end of the dielectric core; the receiver stage comprises an amplifier and an electromagnetic radiation screen, the amplifier being positioned within the screen; and the transmission line includes a current choke arranged to provide a substantially balanced condition at a feed connection of the antenna.
    • 用于在超过200MHz的频率下操作的天线系统包括天线,传输线和接收机级,所述传输线将所述天线电连接到所述接收机级的输入端,并且所述天线具有:天线芯 相对介电常数大于5的固体绝缘材料,占核心外表面限定的体积主要部分的芯体材料,以及设置在芯体外表面上或其附近的三维天线元件结构; 其中所述天线在所述介质芯的近端处由所述传输线馈送; 所述接收器级包括放大器和电磁辐射屏幕,所述放大器位于所述屏幕内; 并且传输线包括布置成在天线的馈电连接处提供基本平衡状态的电流扼流圈。
    • 10. 发明授权
    • Dielectrically loaded antenna and an antenna assembly
    • 电感天线和天线组件
    • US08692734B2
    • 2014-04-08
    • US12584679
    • 2009-09-09
    • Oliver Paul Leisten
    • Oliver Paul Leisten
    • H01Q1/36
    • H01Q11/08
    • A dielectrically loaded quadrifilar helical antenna has four quarter turn helical elements centered on a common axis. Each helical element is metallized on the outer cylindrical surface of a solid dielectric core and each has a feed end and a linked end, the linked ends being connected together by a linking conductor encircling the core. At an operating frequency of the antenna the helical elements and the linking conductor together form two conductive loops each having an electrical length in the region of (2n−1)/2 times the wavelength, where n is an integer. Such an antenna tends to present a source impedance of at least 500 ohms to receiver circuitry to which it is connected. The invention includes an antenna assembly including a dielectrically antenna and a receiver having a radio frequency front-end stage with a differential input coupled to the feed ends of the helical elements.
    • 介质加载的四边形螺旋天线具有以公共轴为中心的四分之四转的螺旋形元件。 每个螺旋元件在固体电介质芯的外圆柱表面上金属化,并且每个螺旋元件均具有馈电端和连接端,所述连接端通过环绕芯的连接导体连接在一起。 在天线的工作频率下,螺旋元件和连接导体一起形成两个导电回路,每个导电回路具有在波长为(2n-1)/ 2倍的区域中的电长度,其中n为整数。 这样的天线趋向于向其所连接的接收器电路提供至少500欧姆的源阻抗。 本发明包括一种包括介电天线和接收器的天线组件,所述天线具有射频前端级,其具有耦合到所述螺旋元件的馈送端的差分输入。