Antenna having a wide bandwidth
    81.
    发明申请
    Antenna having a wide bandwidth 失效
    天线宽带宽

    公开(公告)号:US20010050655A1

    公开(公告)日:2001-12-13

    申请号:US09778534

    申请日:2001-02-07

    IPC分类号: H01Q001/36 H01Q001/24

    CPC分类号: H01Q21/28 H01Q1/362 H01Q5/45

    摘要: An antenna includes antenna elements for transmitting and receiving signals. The antenna elements have a helical shape and are disposed parallel to one another. The antenna elements are individually connected in parallel to a common conductor surface and are capacitively coupled to a radio-frequency counterpoise via the common conductor surface.

    摘要翻译: 天线包括用于发送和接收信号的天线元件。 天线元件具有螺旋形状并且彼此平行设置。 天线元件分别与公共导体表面并联连接,并通过公共导体表面电容耦合到射频平衡。

    Freedhorn capable of receiving radio waves from plurality of neighboring satellites
    82.
    发明授权
    Freedhorn capable of receiving radio waves from plurality of neighboring satellites 失效
    Freedhorn能够接收来自多个相邻卫星的无线电波

    公开(公告)号:US06313808B1

    公开(公告)日:2001-11-06

    申请号:US09573758

    申请日:2000-05-18

    申请人: Dou Yuanzhu

    发明人: Dou Yuanzhu

    IPC分类号: H01Q1302

    摘要: A feedhorn of the invention comprises: at least first and second waveguides in positions so as to face each other over a center line, each having an axis parallel to the center line; and first and second horns on extension lines of the axes. The outer ends of the first and second horns have aperture end faces, respectively. Each of the aperture end faces of the first and second horns is tilted toward the center line by a predetermined angle so that the first and second horns are perpendicular to the travel directions of radio waves transmitted from at least two broadcasting satellites orbiting around the earth and reflected by an antenna on the ground.

    摘要翻译: 本发明的馈电喇叭包括:至少第一和第二波导在中心线上彼此面对的位置,每个波导具有平行于中心线的轴线; 以及轴的延长线上的第一和第二个喇叭。 第一和第二喇叭的外端分别具有开口端面。 第一和第二喇叭的每个孔径端面朝向中心线倾斜预定角度,使得第一和第二喇叭垂直于从围绕地球绕行的至少两个广播卫星发射的无线电波的行进方向,以及 由地面上的天线反射。

    Antennas and feed support structures having wave-guides configured to position the electronics of the antenna in a compact form
    83.
    发明申请
    Antennas and feed support structures having wave-guides configured to position the electronics of the antenna in a compact form 失效
    天线和馈电支撑结构,其具有被配置成以紧凑形式定位天线的电子装置的波导

    公开(公告)号:US20010030629A1

    公开(公告)日:2001-10-18

    申请号:US09797012

    申请日:2001-03-01

    发明人: Hamid Moheb

    IPC分类号: H01Q013/00 H01Q019/12

    摘要: The present invention provides various wave-guides and support structures that are used in conjunction with feed structures to form compact antennas. Specifically, in one embodiment, the present invention provides a wave-guide design used for connecting the feed of an antenna to various electronics, such as a transmitter or receiver. The wave-guide of this embodiment includes a first end for connecting to the feed and a second end for connection to either a transmitter, receiver, or other electronic components. Importantly, the body of the wave-guide extends in a direction towards the reflector of the antenna so that the second end of the wave-guide is positioned closer to the reflector than the first end of the wave guide. As such, the transmitter or receiver that is connected to the second end of the wave-guide is located in close relationship with the reflector, thereby creating a compact, aesthetically pleasing antenna structure.

    摘要翻译: 本发明提供了与进料结构结合使用以形成紧凑型天线的各种波导和支撑结构。 具体地说,在一个实施例中,本发明提供了一种用于将天线馈送连接到诸如发射机或接收机之类的各种电子设备的波导设计。 该实施例的波导包括用于连接到进料的第一端和用于连接到发射器,接收器或其它电子部件的第二端。 重要的是,波导的主体沿着朝向天线的反射器的方向延伸,使得波导的第二端定位成比波导的第一端更靠近反射器。 因此,连接到波导的第二端的发射器或接收器位于与反射器的紧密关系中,从而产生紧凑的,美观的天线结构。

    Distributed bifocal abbe-sine for wide-angle multi-beam and scanning
antenna system
    84.
    发明授权
    Distributed bifocal abbe-sine for wide-angle multi-beam and scanning antenna system 失效
    广角多光束和扫描天线系统的分布式双焦点

    公开(公告)号:US6160520A

    公开(公告)日:2000-12-12

    申请号:US273466

    申请日:1999-03-22

    摘要: A multiple beam antenna system including a reflector that is at least partially parabolic in one dimension, a pair of dielectric lenses (or optionally at least one shaped reflector to perform functionality otherwise performed by the lens(es)), and a pair of waveguides. Multiple received beams are received and reflected by the reflector into an orthogonal mode junction which separates signals of a first polarity from signals of a second orthogonal polarity. The signals of the first polarity are forwarded into a first waveguide and the orthogonal signals of the second polarity are forwarded into a second parallel waveguide. A plurality of satellites may be accessed simultaneously thus allowing the user to utilize both signals at the same time. In certain embodiments, each of the dielectric lenses may be of the bifocal type.

    摘要翻译: 一种多波束天线系统,包括在一个维度上至少部分抛物线的反射器,一对电介质透镜(或者可选地,至少一个成形的反射器,以执行另外由透镜执行的功能)和一对波导。 多个接收光束被反射器接收并反射成正交模式结,其将第一极性的信号与第二正交极性的信号分离。 第一极性的信号被转发到第一波导中,并且第二极性的正交信号被转发到第二平行波导中。 可以同时访问多个卫星,从而允许用户同时使用两个信号。 在某些实施例中,每个介质透镜可以是双焦型。

    Multiband feedhorn mount assembly for ground satellite receiving antenna
    86.
    发明授权
    Multiband feedhorn mount assembly for ground satellite receiving antenna 失效
    用于地面卫星接收天线的多频带馈电喇叭安装组件

    公开(公告)号:US5859620A

    公开(公告)日:1999-01-12

    申请号:US757313

    申请日:1996-11-27

    CPC分类号: H01Q3/18 H01Q1/125 H01Q5/45

    摘要: A low cost, highly efficient multiband feedhorn mount assembly for co-locating first and second feedhorns on a ground satellite receiving antenna comprises a first mounting bracket adapted to be secured to an antenna bridge for adjustably supporting the first feedhorn. A second mounting bracket carrying the second feedhorn is adjustably attached to the first mounting bracket such that the first and second feedhorns, when attached respectively to the first and second mounting brackets, may be individually oriented relative to the antenna reflector. Co-located transmissions in different frequency bands from one or more satellites may thus be received without the need for a costly hybrid multiband feedhorn. Methods for installing the assembly are disclosed.

    摘要翻译: 用于在地面卫星接收天线上共同定位第一和第二馈电喇叭的低成本,高效率的多频带馈电喇叭安装组件包括适于固定到天线桥的第一安装支架,用于可调节地支撑第一馈电喇叭。 携带第二馈电喇叭的第二安装支架可调节地附接到第一安装支架,使得当分别附接到第一和第二安装支架时,第一和第二馈电喇叭可以相对于天线反射器单独取向。 因此可以接收来自一个或多个卫星的不同频带中的同位置传输,而不需要昂贵的混合多频带馈电喇叭。 公开了安装组件的方法。

    Spherical lens antenna having an electronically steerable beam
    87.
    发明授权
    Spherical lens antenna having an electronically steerable beam 失效
    具有电子导向梁的球面透镜天线

    公开(公告)号:US5821908A

    公开(公告)日:1998-10-13

    申请号:US620292

    申请日:1996-03-22

    申请人: Ajay I. Sreenivas

    发明人: Ajay I. Sreenivas

    摘要: The invention relates to an antenna system which is capable of producing multiple, high-gain, independently steerable antenna beams from a single antenna aperture. The system accomplishes this, in part, by utilizing a separate phased array antenna as the feed element of a spherical lens for each desired beam. In this fashion, the beam(s) produced by the antenna system can each be electronically steered (independently of the other beams, if any) and physical movement of the feed element(s) is not required. The invention may also use multiple spherical lenses, wherein each lens includes at least one phased array feed.

    摘要翻译: 本发明涉及一种天线系统,其能够从单个天线孔径产生多个高增益,独立可导向的天线波束。 该系统部分地通过利用单独的相控阵天线作为每个期望光束的球面透镜的馈送元件来实现这一点。 以这种方式,由天线系统产生的波束可以各自被电子导向(独立于其它波束,如果有的话),并且不需要馈送元件的物理移动。 本发明还可以使用多个球面透镜,其中每个透镜包括至少一个相控阵列进给。

    Dual polarized dual band antenna
    88.
    发明授权
    Dual polarized dual band antenna 失效
    双极化双频天线

    公开(公告)号:US5451969A

    公开(公告)日:1995-09-19

    申请号:US34020

    申请日:1993-03-22

    摘要: An antenna system is described including a reflector antenna, responsive to radio frequency signals at a first frequency, having a first reflector surface, a second reflector surface and a Cassegrain feed. The antenna system further includes an array antenna having a plurality of antenna elements responsive to radio frequency signals having a second different frequency, wherein a center element is in a common location with the feed of the reflector antenna. With such an arrangement, an improved dual band antenna system is provided. By providing the center element of the array antenna in a common location with the feed of the reflector antenna, a dual band radio frequency antenna system is provided which is more compact with improved radiation characteristics than known similar configured antennas.

    摘要翻译: 描述了一种天线系统,其包括响应于第一频率的射频信号的反射器天线,具有第一反射器表面,第二反射器表面和卡塞格莱恩馈电。 天线系统还包括阵列天线,其具有响应于具有第二不同频率的射频信号的多个天线元件,其中中心元件与反射器天线的馈送处于公共位置。 通过这样的布置,提供了改进的双频带天线系统。 通过将阵列天线的中心元件设置在与反射器天线的馈送的公共位置中,提供了双频带射频天线系统,其比已知的类似配置的天线更加紧凑,具有改进的辐射特性。

    Coaxial multiple-mode antenna system
    89.
    发明授权
    Coaxial multiple-mode antenna system 失效
    同轴多模式天线系统

    公开(公告)号:US5298909A

    公开(公告)日:1994-03-29

    申请号:US804720

    申请日:1991-12-11

    CPC分类号: H01Q21/28 G01S13/86 H01Q5/45

    摘要: A coaxial multiple-mode antenna system (10) is disclosed, including a coaxial input section (14) for coaxially collecting, for example, MMW and IR electromagnetic radiation. The IR radiation is focused to a point at the input section's focal plane, while the MMW beam has a relatively large width in this plane. An interface section (16) includes an IR section (18) and MMW section (20) that allow the two beams to be separately processed with a minimum of losses. In that regard, the MMW section includes a lens (42), having an incident surface, the center of which is positioned at the focal plane. An optical fiber (46) extends axially through the lens and has an incident end that is aligned with the incident surface of the lens. The lens quasi-optically transmits the MMW beam to a detection circuit (26), while the optical fiber transmits the IR beam to detection circuit (22). Because the optical fiber receives the IR beam before it is processed by the lens, IR losses are limited. Further, the small diameter of the optical fiber and its axial alignment in the lens cause minimal disruption of the MMW beam.

    摘要翻译: 公开了一种同轴多模式天线系统(10),包括用于同轴收集例如MMW和IR电磁辐射的同轴输入部分(14)。 IR辐射被聚焦到输入部分的焦平面处的点,而MMW束在该平面中具有相对较大的宽度。 接口部分(16)包括IR部分(18)和MMW部分(20),其允许以最小的损失分开处理两个光束。 在这方面,MMW部分包括透镜(42),其具有入射表面,其中心位于焦平面处。 光纤(46)轴向延伸穿过透镜并具有与透镜的入射表面对准的入射端。 透镜将MMW光束准光学地传输到检测电路(26),而光纤将IR光束传输到检测电路(22)。 由于光纤在被透镜处理之前接收到IR光束,因此IR损耗受到限制。 此外,光纤的小直径及其在透镜中的轴向对准导致MMW束的最小破坏。