Compact dual band antenna having common elements and common feed
    1.
    发明申请
    Compact dual band antenna having common elements and common feed 审中-公开
    紧凑型双频天线,具有通用元件和普通馈电

    公开(公告)号:US20060284770A1

    公开(公告)日:2006-12-21

    申请号:US11153891

    申请日:2005-06-15

    IPC分类号: H01Q1/38

    摘要: A dual band antenna comprising structurally different antenna elements and having common feed. The antenna includes a ground plane, a radiating element and an arm extending from the radiating element. In a first operating mode energy is radiated from the arm, the radiating element and the ground plane. In a second operating mode energy is radiated from the radiating element and the ground plane. Thus the antenna operates in two modes with two different resonant frequencies.

    摘要翻译: 包括结构上不同的天线元件并具有公共馈电的双频带天线。 天线包括接地平面,辐射元件和从辐射元件延伸的臂。 在第一操作模式中,能量从臂,辐射元件和接地平面辐射。 在第二操作模式中,能量从辐射元件和接地平面辐射。 因此,天线以两种不同的谐振频率工作在两种模式中。

    Radio frequency identification tag
    3.
    发明申请
    Radio frequency identification tag 有权
    射频识别标签

    公开(公告)号:US20050024287A1

    公开(公告)日:2005-02-03

    申请号:US10856354

    申请日:2004-05-28

    摘要: A radio frequency identification tag attached to an object and comprising an antenna and an integrated circuit for providing object information to a separate reader. The antenna further comprises a pair of meanderline transmission lines each terminated at a first end for conductive connection to the integrated circuit. A shorting bar connected between the pair of meanderline transmission lines at the first ends is operative to match an antenna impedance with an integrated circuit impedance.

    摘要翻译: 附接到对象并包括天线的射频识别标签和用于向单独的读取器提供对象信息的集成电路。 天线还包括一对弯曲线传输线,每条终端在第一端,用于与集成电路的导电连接。 连接在第一端的一对曲折线传输线之间的短路杆可操作以将天线阻抗与集成电路阻抗相匹配。

    Tri-band antenna for digital multimedia broadcast (DMB) applications
    4.
    发明申请
    Tri-band antenna for digital multimedia broadcast (DMB) applications 有权
    用于数字多媒体广播(DMB)应用的三频天线

    公开(公告)号:US20050270238A1

    公开(公告)日:2005-12-08

    申请号:US10863809

    申请日:2004-06-08

    摘要: A radio frequency transmitting and receiving apparatus comprising an antenna further comprising a plurality of antenna segments. Each segment exhibits a different electrical length and certain of the segments are capacitively coupled to establish a resonant frequency for each segment. In one embodiment, the certain segments comprise a plurality of concentric arcuate conductive elements connected to a signal terminal and a ground plane.

    摘要翻译: 一种射频发射和接收装置,包括天线,还包括多个天线段。 每个段呈现不同的电长度,并且某些段电容耦合以为每个段建立谐振频率。 在一个实施例中,某些段包括连接到信号端子和接地平面的多个同心弧形导电元件。

    Methods and Apparatuses for Adaptively Controlling Antenna Parameters to Enhance Efficiency and Maintain Antenna Size Compactness
    5.
    发明申请
    Methods and Apparatuses for Adaptively Controlling Antenna Parameters to Enhance Efficiency and Maintain Antenna Size Compactness 有权
    自适应控制天线参数以提高效率和维持天线尺寸紧凑性的方法和装置

    公开(公告)号:US20070222697A1

    公开(公告)日:2007-09-27

    申请号:US11623307

    申请日:2007-01-15

    IPC分类号: H01Q5/00 H01P11/00

    摘要: A communications apparatus comprising a first antenna, a first serial configuration of a first power amplifier and a first matching network, a second serial configuration of a second power amplifier and a second matching network, a switching element for switchably selecting the first or the second serial configuration for supplying a signal to the first antenna, the first and the second power amplifiers supplying a respective first signal of a first power and a second signal of a second power different than the first power to the first antenna for transmitting and the first and the second matching networks presenting respective first and second impedances to the respective first and second power amplifiers, the first and the second impedances responsive respectively to a power-related parameter of the first and the second signals.

    摘要翻译: 一种通信装置,包括第一天线,第一功率放大器和第一匹配网络的第一串行配置,第二功率放大器和第二匹配网络的第二串行配置,用于可切换地选择第一或第二串行 用于向第一天线提供信号的配置,第一和第二功率放大器将第一功率的相应第一信号和与第一功率不同的第二功率的第二信号提供给用于发射的第一天线,第一和第二功率放大器 第二匹配网络向相应的第一和第二功率放大器呈现相应的第一和第二阻抗,第一和第二阻抗分别响应于第一和第二信号的功率相关参数。

    Method and apparatus for adaptively controlling antenna parameters to enhance efficiency and maintain antenna size compactness
    6.
    发明申请
    Method and apparatus for adaptively controlling antenna parameters to enhance efficiency and maintain antenna size compactness 有权
    用于自适应地控制天线参数以提高效率并保持天线尺寸紧凑性的方法和装置

    公开(公告)号:US20060132360A1

    公开(公告)日:2006-06-22

    申请号:US11252248

    申请日:2005-10-17

    IPC分类号: H01Q1/38

    CPC分类号: H01Q1/243 H01Q9/045

    摘要: An antenna for a communications device having configurable elements controlled to modify an antenna impedance and/or an antenna resonant frequency to improve performance of the communications device. The antenna impedance is controlled to substantially match to an output impedance of a power amplifier that supplies the antenna with a signal for transmission. The antenna resonant frequency is controlled to overcome the effects of various operating conditions that can detune the antenna or in response to an operable frequency band.

    摘要翻译: 一种用于通信设备的天线,其具有被控制以修改天线阻抗和/或天线谐振频率的可配置元件以改善通信设备的性能。 天线阻抗被控制为基本上匹配向向天线提供用于传输的信号的功率放大器的输出阻抗。 控制天线谐振频率以克服可以使天线失谐或响应于可操作频带的各种操作条件的影响。

    Methods and Apparatuses for Adaptively Controlling Antenna Parameters to Enhance Efficiency and Maintain Antenna Size Compactness
    7.
    发明申请
    Methods and Apparatuses for Adaptively Controlling Antenna Parameters to Enhance Efficiency and Maintain Antenna Size Compactness 有权
    自适应控制天线参数以提高效率和维持天线尺寸紧凑性的方法和装置

    公开(公告)号:US20060281423A1

    公开(公告)日:2006-12-14

    申请号:US11421878

    申请日:2006-06-02

    IPC分类号: H04B1/04 H01Q11/12

    CPC分类号: H01Q1/243 H01Q9/045

    摘要: An antenna for a communications device having configurable elements controlled to modify an antenna impedance and/or an antenna resonant frequency to improve performance of the communications device. The antenna impedance is controlled to substantially match to an output impedance of a power amplifier that supplies the antenna with a signal for transmission. The antenna resonant frequency is controlled to overcome the effects of various operating conditions that can detune the antenna or in response to an operable frequency band.

    摘要翻译: 一种用于通信设备的天线,其具有被控制以修改天线阻抗和/或天线谐振频率的可配置元件以改善通信设备的性能。 天线阻抗被控制为基本上匹配向向天线提供用于传输的信号的功率放大器的输出阻抗。 控制天线谐振频率以克服可以使天线失谐或响应于可操作频带的各种操作条件的影响。

    Meanderline coupled quadband antenna for wireless handsets
    8.
    发明申请
    Meanderline coupled quadband antenna for wireless handsets 有权
    用于无线手机的Meanderline耦合四频天线

    公开(公告)号:US20050270243A1

    公开(公告)日:2005-12-08

    申请号:US11145171

    申请日:2005-06-03

    摘要: An antenna operative in a plurality of frequency bands. The antenna comprises first and second high band resonators, a resonating meanderline and a counterpoise. A ground return conductively couples one or more regions of the counterpoise to the meanderline. One or more of the first resonating element, the second resonating element and the resonating meanderline are coupled by magnetic and/or capacitive coupling to provide operation in the plurality of frequency bands.

    摘要翻译: 一种在多个频带中工作的天线。 天线包括第一和第二高频带谐振器,谐振曲折线和平衡线。 地面返回将一个或多个平衡区域导向地弯曲到曲折线。 第一谐振元件,第二谐振元件和谐振曲折线中的一个或多个通过磁和/或电容耦合耦合以提供多个频带中的操作。

    System and method for enhancing near vertical incidence skywave (
    9.
    发明申请
    System and method for enhancing near vertical incidence skywave ("NVIS") communication using space-time coding 有权
    使用时空编码增强近垂直入射天波(“NVIS”)通信的系统和方法

    公开(公告)号:US20050220207A1

    公开(公告)日:2005-10-06

    申请号:US10817731

    申请日:2004-04-02

    IPC分类号: H04J99/00 H04L1/02 H04L1/06

    CPC分类号: H04L1/0618

    摘要: A system and method are described in which space-time coding techniques are used to transmit and receive multiple data streams within a near vertical incidence skywave (“NVIS”) communication system. Within the NVIS communication system, multiple independent data streams may be transmitted from a transmitting station at a high radiation angle, approaching or reaching 90 degrees. The data streams are reflected off of the ionosphere of the earth and received by one or more receiving stations. In one embodiment, the space-time coding techniques are multiple-input multiple-output (“MIMO”) signal communication techniques.

    摘要翻译: 描述了一种系统和方法,其中使用空时编码技术在近垂直入射天波(“NVIS”)通信系统内发送和接收多个数据流。 在NVIS通信系统内,多个独立数据流可以从发射站以高辐射角发射,接近或达到90度。 数据流被地球的电离层反射并由一个或多个接收站接收。 在一个实施例中,时空编码技术是多输入多输出(“MIMO”)信号通信技术。

    Antenna System for Receiving Digital Video Broadcast Signals
    10.
    发明申请
    Antenna System for Receiving Digital Video Broadcast Signals 有权
    用于接收数字视频广播信号的天线系统

    公开(公告)号:US20070241976A1

    公开(公告)日:2007-10-18

    申请号:US11627371

    申请日:2007-01-25

    IPC分类号: H01Q9/00

    摘要: An antenna system operative with a communications device for receiving a radio frequency signal, wherein the communications device produces a first control signal representing a frequency of a received signal. The antenna system comprises an antenna structure for receiving the radio frequency signal, the antenna structure comprising tunable elements for controlling a resonant frequency of the antenna structure; a decoder responsive to the first control signal for producing a second control signal and a switch matrix responsive to the second control signal for configuring one or more of the tunable elements to control the resonant frequency responsive to the frequency of the received signal.

    摘要翻译: 一种与用于接收射频信号的通信设备操作的天线系统,其中所述通信设备产生表示接收信号的频率的第一控制信号。 天线系统包括用于接收射频信号的天线结构,天线结构包括用于控制天线结构的谐振频率的可调谐元件; 响应于所述第一控制信号产生第二控制信号的解码器和响应于所述第二控制信号的开关矩阵,用于配置一个或多个所述可调谐元件以响应于所述接收信号的频率来控制所述谐振频率。