公开(公告)号：US07898462B2

公开(公告)日：2011-03-01

申请号：US12245593

申请日：2008-10-03

申请人： David W. Meyers ,  Long Bui ,  Yi-Chi Shih

发明人： David W. Meyers ,  Long Bui ,  Yi-Chi Shih

IPC分类号： H01Q1/28 ,  G01C23/00 ,  G01S13/00

CPC分类号： G01S13/9303 ,  G01S13/42 ,  G01S13/426 ,  G01S13/4454 ,  H01Q25/00

摘要： A radar system comprises a plurality of antenna sub-systems, each operable to transmit and receive radio frequency (RF) signals in a corresponding sector, wherein the plurality of antenna sub-systems are positioned such that the corresponding sectors cover a total range of about 180 degrees to about 360 degrees without rotation of the radar system. The radar system also comprises shared backend circuitry coupled to each of the plurality of antenna sub-systems and operable to process signals from each of the plurality of antenna sub-systems to detect the presence of an obstacle in one of the corresponding sectors.

摘要翻译： 雷达系统包括多个天线子系统，每个天线子系统可操作以在对应的扇区中发送和接收射频（RF）信号，其中多个天线子系统被定位成使得对应的扇区覆盖约 180度至360度左右，不会旋转雷达系统。 所述雷达系统还包括耦合到所述多个天线子系统中的每一个的共享后端电路，并且可操作以处理来自所述多个天线子系统中的每一个的信号，以检测相应扇区之一中的障碍物的存在。

公开(公告)号：US07782250B2

公开(公告)日：2010-08-24

申请号：US12138715

申请日：2008-06-13

申请人： Yi-Chi Shih ,  Kiet Mai ,  Long Bui ,  Cam Bui

发明人： Yi-Chi Shih ,  Kiet Mai ,  Long Bui ,  Cam Bui

IPC分类号： G01S7/40

CPC分类号： G01S7/4052 ,  G01S2007/4082

摘要： A millimeter wave radar target simulation system and method. The system includes a down-converter that converts a millimeter wave radar signal to an intermediate frequency, an electrical-to-optical modulator that modulates an optical signal based on the down-converted signal, an optical-to-electrical demodulator that demodulates an optical signal to an electrical signal, an optical delay line serving to delay a signal passing from the electrical-to-optical modulator to the optical-to-electrical demodulator, and an up-converter that converts the electrical signal from the optical-to-electrical demodulator to a frequency that simulates a millimeter wave target return. The method includes receiving a millimeter wave radar signal, down-converting the radar signal to an intermediate frequency, modulating the down-converted signal to an optical signal, delaying the optical signal, demodulating the delayed optical signal, and up-converting the demodulated signal to a signal having a frequency that simulates a millimeter wave radar target return.

摘要翻译： 一种毫米波雷达目标仿真系统及方法。 该系统包括将毫米波雷达信号转换成中频的下变频器，基于下变频信号调制光信号的电光调制器，解调光信号的光电解调器 信号到电信号，用于延迟从电 - 光调制器到光 - 电解调器的信号的光延迟线，以及上变频器，其将来自光 - 电 解调器到模拟毫米波目标返回的频率。 该方法包括接收毫米波雷达信号，将雷达信号下变频到中频，将下变频信号调制成光信号，延迟光信号，解调延迟的光信号，以及上变频解调信号 涉及具有模拟毫米波雷达目标返回的频率的信号。

公开(公告)号：US20100085241A1

公开(公告)日：2010-04-08

申请号：US12245583

申请日：2008-10-03

申请人： David W. Meyers ,  Long Bui ,  Yi-Chi Shih ,  Alan G. Cornett

发明人： David W. Meyers ,  Long Bui ,  Yi-Chi Shih ,  Alan G. Cornett

IPC分类号： G01S13/34 ,  G01S3/46

CPC分类号： G01S13/94 ,  G01S7/411 ,  G01S13/34

摘要： A obstacle detection system comprises a transmission antenna operable to radiate a radio frequency (RF) signal and a transmitter operable to control transmission of the RF signal from the antenna. The obstacle detection system also comprises a receiver antenna operable to receive a reflection of the RF signal; and processing circuitry operable to analyze a plurality of characteristics of a radar cross section (RCS) of the received reflection to identify an obstacle and one or more physical attributes of the obstacle.

摘要翻译： 障碍物检测系统包括可操作以辐射射频（RF）信号的发射天线和可操作以控制来自天线的RF信号的发射的发射机。 障碍物检测系统还包括可操作以接收RF信号的反射的接收机天线; 以及处理电路，其可操作以分析接收到的反射的雷达横截面（RCS）的多个特征，以识别障碍物和障碍物的一个或多个物理属性。

公开(公告)号：US20050275038A1

公开(公告)日：2005-12-15

申请号：US10866267

申请日：2004-06-14

申请人： Yi-Chi Shih ,  Cindy Qiu ,  Ishiang Shih ,  Chunong Qiu

发明人： Yi-Chi Shih ,  Cindy Qiu ,  Ishiang Shih ,  Chunong Qiu

IPC分类号： H01L29/76 ,  H01L29/786

CPC分类号： H01L29/7869 ,  H01L29/78633 ,  H01L29/78645 ,  H01L29/78648

摘要： In electronic displays or imaging units, the control of pixels is achieved by an array of transistors. These transistors are in a thin film form and arranged in a two-dimensional configuration to form switching circuits, driving circuits or even read-out circuits. In this invention, thin film transistors and circuits with indium oxide-based channel layers are provided. These thin film transistors and circuits may be fabricated at low temperatures on various substrates and with high charge carrier mobilities. In addition to conventional rigid substrates, the present thin film transistors and circuits are particularly suited for the fabrication on flexible and transparent substrates for electronic display and imaging applications. Methods for the fabrication of the thin film transistors with indium oxide-based channels are provided.

摘要翻译： 在电子显示器或成像单元中，通过晶体管阵列来实现像素的控制。 这些晶体管是薄膜形式并且被布置成二维配置以形成开关电路，驱动电路或甚至读出电路。 在本发明中，提供了具有氧化铟基沟道层的薄膜晶体管和电路。 这些薄膜晶体管和电路可以在各种基板上的低温下制造，并具有高电荷载流子迁移率。 除了传统的刚性衬底之外，本发明的薄膜晶体管和电路特别适用于用于电子显示和成像应用的柔性和透明衬底上的制造。 提供了制造具有基于氧化铟的通道的薄膜晶体管的方法。

公开(公告)号：US20050024161A1

公开(公告)日：2005-02-03

申请号：US10629162

申请日：2003-07-30

申请人： Cindy Qiu ,  Chunong Qiu ,  Yi-Chi Shih

发明人： Cindy Qiu ,  Chunong Qiu ,  Yi-Chi Shih

IPC分类号： H01P1/12 ,  H01P1/10

CPC分类号： H01P1/127

摘要： As the basic building block of microwave and millimeter wave units and circuits, the microwave switch must fulfill several requirements including low insertion loss, high isolation and small dimensions. For conventional electrostatically actuated microwave MEMS switches, the isolation between DC and RF is achieved using an RF choke. In this invention, a miniature electrostatically actuated microwave switch with a cantilever and employing two resistive lines on a first substrate and act as the actuation electrodes is provided. The resistive lines as the actuation electrodes according to this invention allows one to minimize the switch dimensions, to facilitate the integration and minimize the interference of the propagating microwave or millimeter wave signals. Another feature of this invention is a miniature electrostatically actuated microwave switch with a cantilever and employing two resistive lines as actuation electrodes on a first substrate, and a third resistive line on a second substrate for the de-actuation of the cantilever.

摘要翻译： 作为微波和毫米波单元和电路的基本构成，微波开关必须满足低插入损耗，高隔离度和小尺寸等多种要求。 对于常规静电微波MEMS开关，使用RF扼流圈实现DC和RF之间的隔离。 在本发明中，提供了一种具有悬臂并在第一基板上使用两个电阻线并用作致动电极的微型静电致动微波开关。 作为根据本发明的致动电极的电阻线允许使开关尺寸最小化，以便于集成并最小化传播的微波或毫米波信号的干扰。 本发明的另一个特征是具有悬臂并且采用两根电阻线作为第一衬底上的致动电极的微型静电致动微波开关，以及用于解除驱动悬臂的第二衬底上的第三电阻线。

公开(公告)号：US06593834B2

公开(公告)日：2003-07-15

申请号：US09917052

申请日：2001-07-30

申请人： Cindy Xing Qiu ,  Chu-Nong Qiu ,  Yi-Chi Shih

发明人： Cindy Xing Qiu ,  Chu-Nong Qiu ,  Yi-Chi Shih

IPC分类号： H01P110

CPC分类号： H01P1/127 ,  H01H1/06 ,  H01H50/005 ,  H01H2050/007

摘要： Miniature double-throw electromagnetic microwave switches are disclosed in this invention. In one embodiment a switch comprising an input transmission line, a first movable cantilever with a first permanent magnetic film and connecting to a first output transmission line, a second movable cantilever with a second permanent magnetic film and connecting to a second output transmission line is provided. In another embodiment, a latching function is provided to a miniature double-throw electromagnetic microwave switch by adding a permanent magnetic film to said input transmission line. In yet another embodiment, a third non-movable cantilever with a permanent magnetic film on top is added to said miniature double-throw microwave latching switch to enhance the latching mechanism. In yet another embodiment, a miniature double-throw microwave switch is disclosed where at least one recess contact region for each movable cantilever is provided to reduce the effects of unwanted particles and to reduce the contact resistance by increasing contact pressure. In still another embodiment, a miniature double-throw microwave switch having non-symmetrical movable cantilevers and transmission lines, with tapered or rounded corners is given. This is done in order to minimize the reflection and losses of propagating microwaves or millimeter waves.

公开(公告)号：US6085002A

公开(公告)日：2000-07-04

申请号：US39431

申请日：1998-03-16

申请人： Cindy Xing Qiu ,  Yi-Chi Shih ,  Lap Sum Yip

发明人： Cindy Xing Qiu ,  Yi-Chi Shih ,  Lap Sum Yip

IPC分类号： G02B6/34 ,  G02B6/36 ,  G02B6/26

CPC分类号： G02B6/29361 ,  G02B6/4249

摘要： Methods for the fabrication of dense wavelength division multiplexors (DWDM) are disclosed. In one embodiment, an array of micro membranes and an array of cavities for optical fibers are etched in a substrate. The distance between major surface of adjacent micro membranes is controlled during the etching step. Multilayer narrow band pass filters are then deposited on all micro membranes simultaneously by vacuum deposition methods. Due to the controlled separation between adjacent micro membranes, the central wavelength of transmission either increases or decreases from one membrane to another. In another embodiment, a micro machined structure containing a plurality of cavities and a slot for variable narrow band pass filter is fabricated. The variable narrow band pass filter is aligned with respect to the optical fibers to obtain a WDM.

摘要翻译： 公开了制造密集波分复用器（DWDM）的方法。 在一个实施例中，在衬底中蚀刻用于光纤的微阵列和空腔阵列。 在蚀刻步骤期间控制相邻微膜的主表面之间的距离。 然后通过真空沉积方法将多层窄带通滤光片同时沉积在所有微膜上。 由于相邻微膜之间的受控分离，传输的中心波长从一个膜增加或减少到另一个膜。 在另一个实施例中，制造了包含多个空腔的微加工结构和用于可变窄带通滤波器的槽。 可变窄带通滤波器相对于光纤对准以获得WDM。