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17 条记录 (耗时 0.019 秒)

    Dual beam dual selectable polarization antenna
    1.
    发明授权
    Dual beam dual selectable polarization antenna 有权
    双光束双选择极化天线

    公开(公告)号：US08643548B2

    公开(公告)日：2014-02-04

    申请号：US12955259

    申请日：2010-11-29

    申请人： Robert Tilman Worl ,  Isaac Ron Bekker ,  Dan R. Miller ,  Kenneth G. Voyce ,  Ming Chen ,  Harold J. Redd

    发明人： Robert Tilman Worl ,  Isaac Ron Bekker ,  Dan R. Miller ,  Kenneth G. Voyce ,  Ming Chen ,  Harold J. Redd

    IPC分类号： H01Q1/38

    CPC分类号： H01Q21/061 ,  H01Q23/00

    摘要： A dual beam dual-selectable-polarization phased array antenna comprises an aperture unit, a printed wiring board, radiating elements, chip units, a pressure plate, and a rear housing unit. The printed wiring board has sub assemblies bonded to each other with a bonding material providing both mechanical and electrical connection. The printed wiring board is connected to the aperture unit. The radiating elements are formed on the printed wiring board. The chip units are mounted on the printed wiring board. The chip units include circuits capable of controlling radio frequency signals radiated by the radiating elements to form dual beams with independently selectable polarization. The pressure plate is connected to the aperture unit. The aperture unit is connected to the rear housing unit such that the aperture unit covers the rear housing unit.

    摘要翻译： 双光束双选择偏振相控阵天线包括孔径单元，印刷线路板，辐射元件，芯片单元，压力板和后壳体单元。 印刷线路板具有通过提供机械和电连接的接合材料彼此接合的子组件。 印刷线路板连接到孔径单元。 辐射元件形成在印刷线路板上。 芯片单元安装在印刷电路板上。 芯片单元包括能够控制由辐射元件辐射的射频信号以形成具有可独立选择的极化的双光束的电路。 压板连接到孔单元。 孔单元连接到后壳体单元，使得孔单元覆盖后壳体单元。

    Microwave transceiver using a reflection pumped mixer
    2.
    发明授权
    Microwave transceiver using a reflection pumped mixer 失效
    微波收发器采用反射泵送混频器

    公开(公告)号：US5442361A

    公开(公告)日：1995-08-15

    申请号：US184535

    申请日：1994-01-21

    申请人： Steven J. Peters ,  Kenneth G. Voyce

    发明人： Steven J. Peters ,  Kenneth G. Voyce

    IPC分类号： G01S7/02 ,  G01S7/03 ,  G01S13/34 ,  G01S13/08

    CPC分类号： G01S7/024 ,  G01S13/34 ,  G01S7/038

    摘要： A microwave transceiver using a reflection pumped mixer includes an electromagnetic signal generator, a subreflector, a reflector of electromagnetic signals from the subreflector, a mixer, circulator, and processing circuitry to relate electromagnetic signal frequency differences to the range of a target from the transceiver. Such frequency differences are detected by the mixer from the captured electromagnetic signals reflected distant targets and reflected electromagnetic signals from the subreflector.

    摘要翻译： 使用反射泵送混频器的微波收发器包括电磁信号发生器，子反射器，来自子反射器的电磁信号的反射器，混频器，循环器和处理电路，用于将电磁信号频率差与来自收发器的目标的范围相关联。 这样的频率差异由混合器从所拍摄的电磁信号反射的远距离目标和来自子反射器的反射电磁信号中检测出。

    Portable radio frequency identification (RFID) reader
    3.
    发明授权
    Portable radio frequency identification (RFID) reader 有权
    便携式射频识别（RFID）阅读器

    公开(公告)号：US08461965B2

    公开(公告)日：2013-06-11

    申请号：US12686922

    申请日：2010-01-13

    申请人： Ming Chen ,  Fong Shi ,  Kenneth G. Voyce

    发明人： Ming Chen ,  Fong Shi ,  Kenneth G. Voyce

    IPC分类号： H04Q5/22

    CPC分类号： G01S13/4445 ,  G01S3/043 ,  G01S13/4454 ,  G01S13/75

    摘要： A particular portable radio frequency identification (RFID) reader includes an active antenna array including a plurality of antenna elements to receive RFID signals from RFID devices. The antenna elements include control circuitry to control a beam pattern generated by the active antenna array. The portable RFID reader further includes sum circuitry and difference circuitry. The sum circuitry is operable to determine a sum signal by summing the RFID signals received by at least two of the plurality of antenna elements. The difference circuitry is operable to determine a difference signal between the RFID signals received by at least two of the plurality of antenna elements. The portable RFID reader also includes a controller to electronically steer the beam pattern and to determine a direction from the RFID reader to a particular RFID device.

    摘要翻译： 特定便携式射频识别（RFID）读取器包括有源天线阵列，其包括用于从RFID设备接收RFID信号的多个天线元件。 天线元件包括用于控制由有源天线阵列产生的波束图案的控制电路。 便携式RFID读取器还包括和电路和差分电路。 总和电路可操作以通过将由多个天线元件中的至少两个接收的RFID信号相加来确定和信号。 差分电路可操作以确定由多个天线元件中的至少两个天线元件接收的RFID信号之间的差分信号。 便携式RFID读取器还包括控制器，用于电子地操纵光束图案并确定从RFID读取器到特定RFID设备的方向。

    Minimum intrusion search oscillator for use in feedback loops
    5.
    发明授权
    Minimum intrusion search oscillator for use in feedback loops 失效
    用于反馈回路的最小入侵搜索振荡器

    公开(公告)号：US5049838A

    公开(公告)日：1991-09-17

    申请号：US409458

    申请日：1989-09-19

    申请人： Kenneth G. Voyce

    发明人： Kenneth G. Voyce

    IPC分类号： H03L7/12

    CPC分类号： H03L7/12 ,  Y10S331/02

    摘要： A search oscillator (12) is disclosed for use with a closed-loop system (10) to sense when the system is out of lock and enhance the system's pull-in capabilities. The oscillator includes a loop filter (22) and a sensing circuit (24), composed of a positive limit sensor (26) and negative limit sensor (28). When the system is out of lock, the output V.sub.out of the oscillator slews positive or negative in an effort to restore the system to lock. The positive and negative limit sensors monitor the output and reset it when predetermined thresholds are reached, allowing the search or sweep operation to continue until lock is achieved.

    摘要翻译： 搜索振荡器（12）被公开用于与闭环系统（10）一起使用以感测系统何时失锁并且增强系统的拉入能力。 该振荡器包括由正极传感器（26）和负极限传感器（28）组成的环路滤波器（22）和感测电路（24）。 当系统失锁时，振荡器的输出Vout为正或负，以恢复系统锁定。 正极和负极限传感器监测输出并在达到预定阈值时将其复位，允许搜索或扫描操作继续，直到达到锁定。

    PORTABLE RADIO FREQUENCY IDENTIFICATION (RFID) READER
    6.
    发明申请
    PORTABLE RADIO FREQUENCY IDENTIFICATION (RFID) READER 有权
    便携式无线电频率识别（RFID）读取器

    公开(公告)号：US20110169613A1

    公开(公告)日：2011-07-14

    申请号：US12686922

    申请日：2010-01-13

    申请人： Ming Chen ,  Fong Shi ,  Kenneth G. Voyce

    发明人： Ming Chen ,  Fong Shi ,  Kenneth G. Voyce

    IPC分类号： H04Q5/22

    CPC分类号： G01S13/4445 ,  G01S3/043 ,  G01S13/4454 ,  G01S13/75

    摘要： A particular portable radio frequency identification (RFID) reader includes an active antenna array including a plurality of antenna elements to receive RFID signals from RFID devices. The antenna elements include control circuitry to control a beam pattern generated by the active antenna array. The portable RFID reader further includes sum circuitry and difference circuitry. The sum circuitry is operable to determine a sum signal by summing the RFID signals received by at least two of the plurality of antenna elements. The difference circuitry is operable to determine a difference signal between the RFID signals received by at least two of the plurality of antenna elements. The portable RFID reader also includes a controller to electronically steer the beam pattern and to determine a direction from the RFID reader to a particular RFID device.

    摘要翻译： 特定便携式射频识别（RFID）读取器包括有源天线阵列，其包括用于从RFID设备接收RFID信号的多个天线元件。 天线元件包括用于控制由有源天线阵列产生的波束图案的控制电路。 便携式RFID读取器还包括和电路和差分电路。 总和电路可操作以通过将由多个天线元件中的至少两个接收的RFID信号相加来确定和信号。 差分电路可操作以确定由多个天线元件中的至少两个天线元件接收的RFID信号之间的差分信号。 便携式RFID读取器还包括控制器，用于电子地操纵光束图案并确定从RFID读取器到特定RFID设备的方向。

    Dual beam dual selectable polarization antenna
    7.
    发明授权
    Dual beam dual selectable polarization antenna 有权
    双光束双选择极化天线

    公开(公告)号：US07868830B2

    公开(公告)日：2011-01-11

    申请号：US12119865

    申请日：2008-05-13

    申请人： Robert Tilman Worl ,  Isaac Ron Bekker ,  Dan R. Miller ,  Kenneth G. Voyce ,  Ming Chen ,  Harold J. Redd

    发明人： Robert Tilman Worl ,  Isaac Ron Bekker ,  Dan R. Miller ,  Kenneth G. Voyce ,  Ming Chen ,  Harold J. Redd

    IPC分类号： H01Q1/38

    CPC分类号： H01Q21/061 ,  H01Q23/00

    摘要： A dual beam dual-selectable-polarization phased array antenna comprises an aperture unit, a printed wiring board, radiating elements, chip units, a pressure plate, and a rear housing unit. The printed wiring board has sub assemblies bonded to each other with a bonding material providing both mechanical and electrical connection. The printed wiring board is connected to the aperture unit. The radiating elements are formed on the printed wiring board. The chip units are mounted on the printed wiring board. The chip units include circuits capable of controlling radio frequency signals radiated by the radiating elements to form dual beams with independently selectable polarization. The pressure plate is connected to the aperture unit. The aperture unit is connected to the rear housing unit such that the aperture unit covers the rear housing unit.

    摘要翻译： 双光束双选择偏振相控阵天线包括孔径单元，印刷线路板，辐射元件，芯片单元，压力板和后壳体单元。 印刷线路板具有通过提供机械和电连接的接合材料彼此接合的子组件。 印刷线路板连接到孔径单元。 辐射元件形成在印刷线路板上。 芯片单元安装在印刷电路板上。 芯片单元包括能够控制由辐射元件辐射的射频信号以形成具有可独立选择的极化的双光束的电路。 压板连接到孔单元。 孔单元连接到后壳体单元，使得孔单元覆盖后壳体单元。

    Linear frequency sweep synthesizer
    9.
    发明授权
    Linear frequency sweep synthesizer 失效
    线性频率扫描合成器

    公开(公告)号：US5210539A

    公开(公告)日：1993-05-11

    申请号：US913777

    申请日：1986-09-30

    申请人： Kenneth G. Voyce

    发明人： Kenneth G. Voyce

    IPC分类号： G01S7/40 ,  G01S13/34

    CPC分类号： G01S13/343 ,  G01S7/4004

    摘要： A circuit for generating an output signal having an output frequency that varies linearly with time, and to an FM CW radar system utilizing such a circuit. The circuit includes a voltage controlled oscillator that produces an output signal at its output terminal at an output frequency that corresponds to the voltage of an input tuning signal. A comparison signal circuit receives the output signal and produces a periodic comparison signal such that when the output frequency varies by .DELTA.f, the comparison signal frequency varies by .DELTA.f/N where N is a positive integer. An update counter periodically causes the value of N to change by a predetermined integer amount. A phase detector compares the comparison signal to a periodic reference signal, and produces a correction signal that is filtered to provide the tuning signal for the VCO. The value of N is preferably changed at an update frequency that is equal to the frequency of the reference signal times an integer. The comparison signal circuit preferably includes a local oscillator for converting the output signal into a periodic IF signal for input to a divider. A high side local oscillator is preferred to minimize loop gain variation with frequency.

    摘要翻译： 一种用于产生具有随时间线性变化的输出频率的输出信号的电路以及利用这种电路的FM CW雷达系统。 该电路包括压控振荡器，其在其输出端产生输出信号，输出频率对应于输入调谐信号的电压。 比较信号电路接收输出信号并产生周期性比较信号，使得当输出频率变化DELTA f时，比较信号频率随DELTA f / N变化，其中N是正整数。 更新计数器周期性地使N的值改变预定的整数。 相位检测器将比较信号与周期性参考信号进行比较，并产生经滤波以提供VCO的调谐信号的校正信号。 N的值优选地以等于参考信号的频率乘以整数的更新频率来改变。 比较信号电路优选地包括用于将输出信号转换为周期性IF信号以便输入到分频器的本地振荡器。 优选的是高端本地振荡器以最小化频率上的环路增益变化。

    Amplifier linearization using down/up conversion
    10.
    发明授权
    Amplifier linearization using down/up conversion 失效
    放大器线性化使用down / up转换

    公开(公告)号：US4929906A

    公开(公告)日：1990-05-29

    申请号：US299950

    申请日：1989-01-23

    申请人： Kenneth G. Voyce ,  Jay H. McCandless

    发明人： Kenneth G. Voyce ,  Jay H. McCandless

    IPC分类号： H03F1/32 ,  H03F1/34

    CPC分类号： H03F1/3247 ,  H03F1/345 ,  H03F2200/57

    摘要： A feedback linearization technique for a power amplifier that does not require the availability of the modulation signals. The RF input signal is down converted to a first IF signal. A portion of the amplifier RF output signal is used to form a feedback signal that is down converted to produce a second IF signal that is subtracted from the first IF signal to produce a different signal. The difference signal is filtered and amplified, and then up converted to RF for input to the power amplifier. Use of feedback at IF avoids stability problems inherent in RF feedback techniques.

    摘要翻译： 用于功率放大器的反馈线性化技术，其不需要调制信号的可用性。 RF输入信号被下变频为第一IF信号。 放大器RF输出信号的一部分用于形成反向信号，该反馈信号被下变频以产生从第一IF信号中减去的第二IF信号以产生不同的信号。 差分信号被滤波和放大，然后上变频到RF输入到功率放大器。 在IF中使用反馈可避免RF反馈技术中固有的稳定性问题。