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    • 3. 发明申请
    • Antenna for controlling a beam direction both in azimuth and elevation
    • 用于控制方位角和仰角的光束方向的天线
    • US20060082514A1
    • 2006-04-20
    • US11065752
    • 2005-02-25
    • Bing ChiangMichael LynchSteven Goldberg
    • Bing ChiangMichael LynchSteven Goldberg
    • H01Q21/00
    • H01Q19/06H01Q19/26H01Q19/28
    • An antenna for controlling a beam direction both in azimuth and elevation is disclosed. An antenna comprises a ground plane, at least one active element, and a plurality of passive elements. Both an upper half and a lower half of the passive elements are connected to the ground plane with variable reactive loads, whereby elevation angle of the radio beam is controlled by adjusting the variable reactive loads. Alternatively, an antenna may comprise a radio frequency (RF) choke coupled to the ground plane, whereby an elevation angle of the radio beam is controlled by controlling the RF choke. Alternatively, an antenna comprises a variable lens for changing a wave front of a radio wave which is passing through the variable lens, whereby the beam width and direction are controlled by the variable lens.
    • 公开了一种用于控制方位和仰角的光束方向的天线。 天线包括接地平面,至少一个有源元件和多个无源元件。 无源元件的上半部分和下半部分均连接到具有可变无功负载的接地平面,由此通过调整可变无功负载来控制无线电波束的仰角。 或者,天线可以包括耦合到接地平面的射频(RF)扼流圈,由此通过控制RF扼流圈来控制无线电波束的仰角。 或者,天线包括用于改变通过可变透镜的无线电波的波前的可变透镜,由此可变透镜控制光束宽度和方向。
    • 7. 发明申请
    • Multi-band antenna for wireless applications
    • 用于无线应用的多频带天线
    • US20050057410A1
    • 2005-03-17
    • US10895813
    • 2004-07-20
    • Bing ChiangMichael LynchDouglas Wood
    • Bing ChiangMichael LynchDouglas Wood
    • H01Q1/24H01Q5/00H01Q5/357H01Q5/364H01Q9/40H01Q9/42H01Q11/02
    • H01Q1/243H01Q5/357H01Q5/364H01Q9/40H01Q9/42
    • A folded monopole antenna that supports lower and upper frequency bands may be used in CDMA, WLAN, or other wireless communications systems. The folded monopole antenna may be located in a handset next to a vertical ground plane. The folded monopole antenna may be folded at least twice and connected to the ground plane through a reactance. The dimensions of different sections of the folded monopole antenna define lower and upper frequency band characteristics, and an offset location of an input feed affects the bandwidth of the frequency bands. The reactance between the antenna and ground plane can be selected to fine tune the frequency bands. Various input feeds, including a co-planar waveguide, may be employed. Dynamically adjustable reactances may be used in the input feed and ground line for adapting the antenna to various environments.
    • 支持较低和较高频带的折叠式单极天线可用于CDMA,WLAN或其他无线通信系统。 折叠的单极天线可以位于靠近垂直接地平面的手机中。 折叠的单极天线可以折叠至少两次,并通过电抗连接到接地平面。 折叠单极天线的不同部分的尺寸限定较低和较高的频带特性,并且输入馈送的偏移位置影响频带的带宽。 可以选择天线和接地平面之间的电抗来微调频带。 可以采用包括共面波导在内的各种输入馈送。 可以在输入进给和接地线中使用动态可调电抗,以使天线适应各种环境。