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    • 33. 发明申请
    • MULTIBAND TUNABLE IMPEDANCE SURFACE
    • 多功能阻抗表面
    • WO2008140543A1
    • 2008-11-20
    • PCT/US2007/080635
    • 2007-10-05
    • HRL LABORATORIES, LLCSIEVENPIPER, Daniel, F.
    • SIEVENPIPER, Daniel, F.
    • H01Q21/12H01Q21/30
    • H01Q15/0066H01Q1/288H01Q3/46
    • A tunable impedance surface capable of steering a multiband radio frequency beam in two different, independently band-wise controllable directions. The tunable surface has a ground plane and a plurality of first conductive elements disposed in a first array a first distance therefrom, the first distance being less than a wavelength of a lower frequency band of the multiband radio frequency beam. A first capacitor arrangement controllably varies capacitance between selected ones of the first conductive elements. A plurality of second conductive elements are disposed in a second array a second distance from the plurality of first conductive elements, the second distance being less than a wavelength of higher frequency band of the multiband radio frequency beam, the plurality of first conductive elements serving as a ground plane for the plurality of second conductive elements. A second capacitor arrangement controllably varies capacitance between selected ones of the second conducitve elements.
    • 一个可调阻抗表面,能够在两个不同的独立带状可控方向上转向多频段射频波束。 可调表面具有接地平面和从第一距离设置在第一阵列中的多个第一导电元件,第一距离小于多频带射频波束的较低频带的波长。 第一电容器布置可控地改变所选择的第一导电元件之间的电容。 多个第二导电元件设置在距离多个第一导电元件第二距离的第二阵列中,第二距离小于多波段射频波束的较高频带的波长,多个第一导电元件用作 用于所述多个第二导电元件的接地平面。 第二电容器布置可控地改变所选择的第二导通元件之间的电容。
    • 34. 发明申请
    • ANTENNA ASSEMBLY AND COMMUNICATIONS ASSEMBLY
    • 天线大会和通信大会
    • WO2008076543A1
    • 2008-06-26
    • PCT/US2007/083979
    • 2007-11-07
    • MOTOROLA INC.NG, Guan HongTAY, Yew Siow
    • NG, Guan HongTAY, Yew Siow
    • H01Q21/12
    • H01Q9/0407
    • An antenna radiator assembly (201) and radio communications assembly (200) comprising a circuit board (210) supporting electrical conductors (225) A ground plane (140) is supported by the circuit board and a symmetrical antenna radiator element (107) is coupled to a feed point (130). When viewed in plan view, a first surface area of the symmetrical antenna radiator element overlaps part of the ground plane There is a ground connector (131) inductively coupling the symmetrical antenna radiator element to the ground plane (141) There are two identical parasitic ground coupling plates (142, 143) that when viewed in the plan view overlap respective secondary surface areas of the symmetrical antenna radiator element. Switching circuitry (160) provides selectively coupling the two identical parasitic ground coupling plates to the ground plane. In the plan view the symmetrical antenna radiator element and the two identical parasitic ground coupling plates are symmetrical about a central axis.
    • 一种天线辐射器组件(201)和包括支撑电导体(225)的电路板(210)的无线电通信组件(200)。接地平面(140)由电路板支撑,对称天线辐射元件(107) 到馈送点(130)。 当在平面图中观察时,对称天线辐射器元件的第一表面区域与接地平面的一部分重叠。存在将对称天线辐射器元件感应耦合到接地平面(141)的接地连接器(131)。有两个相同的寄生接地 当在平面图中观察时,耦合板与对称的天线辐射器元件的相应次表面区域重叠。 开关电路(160)提供选择性地将两个相同的寄生接地耦合板耦合到接地层。 在平面图中,对称天线辐射器元件和两个相同的寄生接地耦合板关于中心轴对称。
    • 38. 发明申请
    • ANTENNA HAVING IMPROVED FRONT-TO-BACK RATIO
    • 天线具有改进的前后比
    • WO1997039494A1
    • 1997-10-23
    • PCT/US1997005977
    • 1997-04-10
    • ALLEN TELECOM INC.
    • ALLEN TELECOM INC.UKMAR, Milosh
    • H01Q21/12
    • H01Q19/108H01Q21/12
    • An antenna having improved front-to-back ratio, the antenna comprising a backplane (101), at least one driven antenna element (103) positioned on a forward side of the backplane, and first (102A) and second (102B) deflector plates disposed on opposing edges of the backplane, the first and second deflector plates extending rearwardly and outwardly from the opposing edges of the backplane (101). In another embodiment, an antenna having improved front-to-back ratio is disclosed in which the antenna comprises a first reflector backplane (101), at least one driven antenna element (108) positioned on a first side of the first reflector backplane, and a second reflector backplane (302) positioned on a second side of the first reflector backplane, wherein the second reflector backplane is fixed in substantially parallel relationship with respect to the first reflector backplane, and spaced away from the first reflector backplane.
    • 一种具有改进的前后比的天线,所述天线包括背板(101),位于背板前方的至少一个从动天线元件(103)和第一(102A)和第二(102B)偏转板 设置在背板的相对边缘上,第一和第二偏转板从背板(101)的相对边缘向后和向外延伸。 在另一个实施例中,公开了一种具有改进的前后比的天线,其中天线包括第一反射器背板(101),至少一个位于第一反射器背板的第一侧的从动天线元件(108),以及 位于所述第一反射器背板的第二侧上的第二反射器背板(302),其中所述第二反射器背板相对于所述第一反射器底板以基本上平行的关系固定,并且与所述第一反射器背板间隔开。