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    • 2. 发明申请
    • PHASE CALIBRATION METHOD AND DEVICE USING THE SAME AND DISTANCE MEASURING EQUIPMENT
    • 相位校准方法和使用它的设备和距离测量设备
    • US20090284822A1
    • 2009-11-19
    • US12189314
    • 2008-08-11
    • Xin DUXin WuZhi Chou
    • Xin DUXin WuZhi Chou
    • G02F1/01
    • G01S7/497G01S17/36
    • The present invention provides a phase calibration method, device, and equipment. The method comprises the steps of: a first light beam emitter generating a first light-wave into a target object, the first light-wave being reflected at the target object and flying back onto a receiver, wherein the first light-wave, as an external beam path signal, is modulated by a first high-frequency oscillation signal; a second light beam emitter emitting a second light-wave into the receiver, wherein the second light-wave, as an internal beam path signal for fundamental phase reference, is modulated by a second high-frequency oscillation signal; and the receiver performing a phase comparison between received first light-wave and sequentially received second light-wave therein and exporting a measurement signal with fundamental reference eliminated. The present method achieves phase compensation and calibration, thereby reducing the influence of environmental elements, increasing measuring precision, and thus reducing system cost.
    • 本发明提供一种相位校准方法,装置和设备。 该方法包括以下步骤:第一光束发射器产生第一光波到目标物体中,第一光波在目标物体处反射并飞回到接收器上,其中第一光波作为 外部光束路径信号由第一高频振荡信号调制; 将第二光束发射到接收器中的第二光束发射器,其中作为用于基相位参考的内部光束路径信号的第二光波被第二高频振荡信号调制; 并且接收机在接收的第一光波和顺序接收的第二光波之间进行相位比较,并输出基本参考的测量信号。 本方法实现了相位补偿和校准,从而降低了环境因素的影响,提高了测量精度,从而降低了系统成本。
    • 3. 发明授权
    • Wireless intelligent personal server
    • 无线智能个人服务器
    • US07149511B1
    • 2006-12-12
    • US09652734
    • 2000-08-31
    • Edward F. Bachner, IIIJohn MajorXin Du
    • Edward F. Bachner, IIIJohn MajorXin Du
    • H04Q7/20H04Q7/32
    • H04L67/16H04L29/06H04L67/04H04L67/26H04L67/2852H04L67/2871H04L69/329
    • A wireless intelligent personal server includes a radio frequency (RF) receiver, a memory for storing electronic files, a set of embedded machine language instructions, a central processing unit (CPU), a first interface for a display device, such as a personal digital assistant (PDA), and a second interface for a wireless telephone. The RF receiver receives downstream data transmitted over a downstream wireless communications channel. The CPU executes the machine language instructions to process the downstream data and, thereby, either update an existing target electronic file stored in the memory, so that the target electronic file reflects changes made to a source electronic file, or create a new electronic file in the memory. A display device may be brought into communication with the wireless intelligent personal server, via the first interface, to access the electronic files stored in the memory. The wireless intelligent personal server may also transmit an upstream signal over an upstream wireless communication channel, such as by using a wireless telephone, in communication via the second interface. The upstream signal may acknowledge receipt of the downstream data, or it may include upstream data reflecting changes to the electronic files stored in the memory made by the display device.
    • 无线智能个人服务器包括射频(RF)接收器,用于存储电子文件的存储器,一组嵌入式机器语言指令,中央处理单元(CPU),用于显示设备的第一接口,诸如个人数字 助理(PDA)和无线电话的第二接口。 RF接收机接收通过下行无线通信信道发送的下行数据。 CPU执行机器语言指令以处理下游数据,从而更新存储在存储器中的现有目标电子文件,使得目标电子文件反映对源电子文件的改变,或者创建新的电子文件 记忆。 显示设备可以经由第一接口与无线智能个人服务器通信,以访问存储在存储器中的电子文件。 无线智能个人服务器还可以经由诸如通过使用无线电话的上游无线通信信道经由第二接口进行通信来发送上行信号。 上游信号可以确认下游数据的接收,或者其可以包括反映存储在由显示设备制造的存储器中的电子文件的改变的上游数据。
    • 7. 发明授权
    • Multi-band antenna
    • 多频天线
    • US08063847B2
    • 2011-11-22
    • US12187032
    • 2008-08-06
    • Xin Du
    • Xin Du
    • H01Q1/36H01Q21/20
    • H01Q19/005H01Q1/38H01Q5/385H01Q5/392H01Q19/10H01Q19/32H01Q21/24
    • A multi-band antenna is provided that operates in non-harmonically related frequency bands. The antenna includes a primary antenna element for a first frequency band of the non-harmonically related bands, said primary antenna element extending perpendicularly from a ground plane, the primary antenna element electrically isolated from the ground plane, a plurality of secondary elements extending from the ground plane parallel to the primary antenna element and arranged in a circle around the primary antenna element, each of said plurality of secondary elements electrically isolated from the primary antenna element and ground plane and a plurality of antenna elements for a second frequency band of a higher relative frequency than the first frequency band, the plurality of high frequency antenna elements extending parallel to the primary and secondary antenna elements and disposed in a circle around the secondary antenna elements.
    • 提供在非谐波相关频带中操作的多频带天线。 天线包括用于非谐波相关带的第一频带的主天线元件,所述主天线元件从接地平面垂直延伸,所述主天线元件与接地平面电隔离,多个辅助元件从 接地平面平行于主天线元件并围绕主天线元件围绕圆周布置,所述多个次要元件中的每一个与主天线元件和接地平面电隔离,并且多个天线元件用于第二频带的较高 所述多个高频天线元件平行于所述主天线元件和所述次天线元件延伸并且围绕所述次天线元件设置成圆形。
    • 8. 发明授权
    • Dual-band window mounted antenna system for mobile communications
    • 用于移动通信的双频带窗口天线系统
    • US06172651B2
    • 2001-01-09
    • US08951428
    • 1997-10-16
    • Xin Du
    • Xin Du
    • H01Q150
    • H01Q1/125H01Q1/1285H01Q1/50
    • A low cost glass mount vehicle antenna system utilizes, in a preferred embodiment, an over-coupled quasi-TEM mode transmission line coupler having two simple stamped or printed plates stacked over an L shape internal ground plane. The two conductive plates are located on opposite sides of the glass. With proper open circuit terminations on two of the four coupler ports, the backwards and forward coupling signals are redirected/combined and are effectively fed diagonally between the other two ports, thereby achieving through-glass coupling. The over-coupling achieves this efficient through-glass coupling effect at two spaced-apart frequencies (e.g. 800 MHz and 1800 MHz). The coupler is of a low impedance type and can be used with a variety of collinear array and elevated-feed antennas. It features high efficiency, low backwards radiation, and mechanical simplicity.
    • 在优选实施例中,低成本玻璃安装车载天线系统使用具有堆叠在L形内部接地平面上的两个简单冲压或印刷板的过耦合准TEM模式传输线耦合器。 两个导电板位于玻璃的相对两侧。 在四个耦合器端口中的两个端口上具有适当的开路端接,向后和向前耦合信号被重定向/组合,并且在其它两个端口之间被对角地有效地馈送,从而实现透玻璃耦合。 过耦合在两个间隔开的频率(例如800MHz和1800MHz)下实现了这种有效的玻璃耦合效应。 耦合器具有低阻抗类型,可用于各种共线阵列和高架馈电天线。 它具有高效率,低反射辐射和机械简单性。