专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US5404006A High power capacity optical receiver apparatus and method employing distributed photodetectors 失效
标题翻译：高功率容量光接收装置及采用分布式光电探测器的方法
公开(公告)号：US5404006A
公开(公告)日：1995-04-04
申请号：US183206
申请日：1994-01-18
申请人： James H. Schaffner , Joseph L. Pikulski , Robert Y. Loo , Willie W. Ng
发明人： James H. Schaffner , Joseph L. Pikulski , Robert Y. Loo , Willie W. Ng
IPC分类号： H01L31/0232 , G02B6/42 , H01L27/144 , H01L31/10 , H01L31/108 , H01P3/08 , H04B10/04 , H04B10/06 , H04B10/14 , H04B10/158 , H04B10/26 , H04B10/28 , H01J40/14
CPC分类号： H04B10/69 , G02B6/42 , H01L27/144 , H01L27/1446 , H01L31/1085 , H04B10/6932
摘要： An optical receiver with an enhanced power capability and wide bandwidth is implemented by distributing a number of photodetectors along an optical transmission channel to convert respective portions of an optical signal into electrical signals. An electrical transmission line receives and accumulates signal inputs from the photodetectors. A velocity matching is established between the optical and electrical signals, allowing the photodetector outputs to accumulate coherently along the electrical transmission line, by loading the transmission line with distributed capacitance elements. The loading capacitances are preferably inherent in the photodetectors, which are designed and spaced apart from each other to yield the desired velocity matching. Possible photodetectors include p-i-n photodiodes with associated depletion layer capacitances, and metal-semiconductor-metal devices in which the capacitance is provided by interdigitated fingers that extend over an active optically absorbing layer on the waveguide from electrodes on either side.
摘要翻译：具有增强的功率能力和宽带宽的光接收机通过沿光传输信道分布多个光电检测器来实现，以将光信号的各个部分转换为电信号。电传输线接收并累积来自光电检测器的信号输入。在光信号和电信号之间建立速度匹配，允许光电检测器输出通过将传输线与分布式电容元件相加来沿着电传输线累积。负载电容优选在光电检测器中是固有的，其被设计并彼此分开以产生期望的速度匹配。可能的光电检测器包括具有相关的耗尽层电容的p-i-n光电二极管以及金属 - 半导体 - 金属器件，其中电容由交叉指状物提供，其在波导上的任一侧上的电极上延伸超过有源光学吸收层。

2. 发明授权

US06175672B1 RF wide bandwidth lossless high performance low noise transmissive link 有权
标题翻译： RF宽带宽无损高性能低噪声传输链路
公开(公告)号：US06175672B1
公开(公告)日：2001-01-16
申请号：US09336264
申请日：1999-06-18
申请人： Irwin L. Newberg , Robert R. Hayes , Kapriel V. Krikorian , Robert Y. Loo , Willie W. Ng , Robert A. Rosen
发明人： Irwin L. Newberg , Robert R. Hayes , Kapriel V. Krikorian , Robert Y. Loo , Willie W. Ng , Robert A. Rosen
IPC分类号： G02B628
CPC分类号： H04B10/2575
摘要： A substantially lossless transmissive link, such as an RF fiber optic link, that selectively employs a number of techniques to improve various link parameters. The link may be structured to comprise a high power light source, such as a laser, that provides light output having a high level of optical power. A feedback circuit may be disposed around the light source that reduces relative-intensity-noise levels produced by the light source at low frequencies. A modulator is provided that modulates the light output of the light source. Preferably, a dual output modulator may be used to provide two modulated optical signals whose respective RF modulation is “effectively” 180 degrees out of phase. An optical fiber that transmits the modulated optical signal(s). A photodetector without a load resistor directly on its output that is operable at the high level of optical power, receives the modulated light and recovers the RF signal. A dual balaniced photodetector that is used in conjunction with the dual output modulator. An RF component, such as an amiplifier, that is coupled directly to an output of the photodetector that provides a load resistance for the link.
摘要翻译：基本上无损的透射链路，例如RF光纤链路，其选择性地采用多种技术来改善各种链路参数。链路可以被构造为包括提供具有高水平光功率的光输出的诸如激光器的高功率光源。可以在光源周围设置反馈电路，从而降低光源在低频时产生的相对强度噪声水平。提供调制器来调节光源的光输出。优选地，双输出调制器可以用于提供两个调制的光信号，其相应的RF调制“有效地”相位相差180度。发送调制光信号的光纤。没有负载电阻器的光电检测器直接在其输出端处可以在高功率电平下工作，接收调制的光并恢复RF信号。双重平衡光电检测器，与双输出调制器结合使用。 RF分量，例如放大器，其直接耦合到光电检测器的输出端，为链路提供负载电阻。

3. 发明授权

US06483480B1 Tunable impedance surface 有权
标题翻译：可调阻抗表面
公开(公告)号：US06483480B1
公开(公告)日：2002-11-19
申请号：US09589859
申请日：2000-06-08
申请人： Daniel Sievenpiper , Greg Tangonan , Robert Y. Loo , James H. Schaffner
发明人： Daniel Sievenpiper , Greg Tangonan , Robert Y. Loo , James H. Schaffner
IPC分类号： H01Q1502
CPC分类号： H01Q3/44 , H01H59/0009 , H01Q9/0442 , H01Q15/0066 , H01Q15/008
摘要： A tuneable impedance surface for steering and/or focusing a radio frequency beam. The tunable surface comprises a ground plane; a first plurality of elements disposed in an array a first distance from the ground plane, the distance being less than a wavelength of the radio frequency beam; and a second plurality of elements disposed in an array a second distance from the ground plane, the second plurality of elements be moveable relative to the first plurality of elements.
摘要翻译：用于转向和/或聚焦射频波束的可调阻抗表面。可调表面包括接地平面; 第一多个元件，其布置成距离接地平面第一距离的阵列，该距离小于射频波长的波长; 以及第二多个元件，其布置成距离接地平面第二距离的阵列，所述第二多个元件可相对于所述第一多个元件移动。

4. 发明授权

US06388631B1 Reconfigurable interleaved phased array antenna 有权
标题翻译：可重配置交错相控阵天线
公开(公告)号：US06388631B1
公开(公告)日：2002-05-14
申请号：US09811934
申请日：2001-03-19
申请人： Stan W. Livingston , Jar J. Lee , James H. Schaffner , Robert Y. Loo
发明人： Stan W. Livingston , Jar J. Lee , James H. Schaffner , Robert Y. Loo
IPC分类号： H01Q1310
CPC分类号： H01Q13/10 , H01Q3/24 , H01Q21/064 , H01Q21/22
摘要： A reconfigurable wide band phased array antenna for generating multiple antenna beams for multiple transmit and receive functions. The antenna array comprises multiple long non-resonant TEM slot antenna apertures with RF MEMS switches disposed within the slots. The RF MEMS switches are positioned directly within the feed lines across the slots to directly control the coupling of RF energy to the slots. Multiple RF MEMS switches are used within each slot, which allows multiple transmit/receive functions and/or multiple frequencies to be supported by each slot. The frequency coverage provided by the slot antenna has a greater than 10:1 frequency range.
摘要翻译：一种用于产生多个发射和接收功能的多个天线波束的可重构宽带相控阵天线。天线阵列包括多个长非谐振TEM缝隙天线孔径，RF MEMS开关设置在槽内。射频MEMS开关直接位于插槽的馈电线内，以直接控制RF能量与插槽的耦合。在每个时隙内使用多个RF MEMS开关，这允许每个时隙支持多个发射/接收功能和/或多个频率。缝隙天线提供的频率覆盖范围大于10：1。

5. 发明授权

US06667245B2 CMOS-compatible MEM switches and method of making 失效
公开(公告)号：US06667245B2
公开(公告)日：2003-12-23
申请号：US10016894
申请日：2001-12-13
申请人： Lap-Wai Chow , Tsung-Yuan Hsu , Daniel J. Hyman , Robert Y. Loo , Paul Ouyang , James H. Schaffner , Adele Schmitz , Robert N. Schwartz
发明人： Lap-Wai Chow , Tsung-Yuan Hsu , Daniel J. Hyman , Robert Y. Loo , Paul Ouyang , James H. Schaffner , Adele Schmitz , Robert N. Schwartz
IPC分类号： H01L2100
CPC分类号： B81C1/00246 , B81B2201/014 , B81C2201/014 , B81C2203/0714 , B81C2203/0735 , H01H1/58 , H01H59/0009 , H01H2001/0057
摘要： A microelectromechanical (MEM) switch is fabricated inexpensively by using processing steps which are standard for fabricating multiple metal layer integrated circuits, such as CMOS. The exact steps may be adjusted to be compatible with the process of a particular foundry, resulting in a device which is both low cost and readily integrable with other circuits. The processing steps include making contacts for the MEM switch from metal plugs which are ordinarily used as vias to connect metal layers which are separated by a dielectric layer. Such contact vias are formed on either side of a sacrificial metallization area, and then the interconnect metallization is removed from between the contact vias, leaving them separated. Dielectric surrounding the contacts is etched back so that they protrude toward each other. Thus, when the contacts are moved toward each other by actuating the MEM switch, they connect firmly without obstruction. Tungsten is typically used to form vias in CMOS processes, and it makes an excellent contact material, but other via metals may also be employed as contacts. Interconnect metallization may be employed for other structural and interconnect needs of the MEM switch, and is preferably standard for the foundry and process used. Various metals and dielectric materials may be used to create the switches, but in a preferred embodiment the interconnect metal layers are aluminum and the dielectric material is SiO2, materials which are fully compatible with standard four-layer CMOS fabrication processes.

6. 发明授权

US06670921B2 Low-cost HDMI-D packaging technique for integrating an efficient reconfigurable antenna array with RF MEMS switches and a high impedance surface 有权
标题翻译：低成本HDMI-D封装技术，用于将高效可重构天线阵列与RF MEMS开关和高阻抗表面集成
公开(公告)号：US06670921B2
公开(公告)日：2003-12-30
申请号：US09906035
申请日：2001-07-13
申请人： Daniel F. Sievenpiper , Adele E. Schmitz , James H. Schaffner , Gregory L. Tangonan , Tsung-Yuan Hsu , Robert Y. Loo , Robert S. Miles
发明人： Daniel F. Sievenpiper , Adele E. Schmitz , James H. Schaffner , Gregory L. Tangonan , Tsung-Yuan Hsu , Robert Y. Loo , Robert S. Miles
IPC分类号： H01Q138
CPC分类号： H01P1/2005 , H01Q1/38 , H01Q15/0066 , H01Q15/008
摘要： A flexible antenna array comprises a plurality of layers of thin metal and a flexible insulating medium arranged as a sandwich of layers. Each layer of the sandwich is patterned as needed to define: (i) antenna segments patterned in one of the metal layers, (ii) an array of metallic top elements formed in a layer spaced from the the antenna segments, the array of metallic top elements being patterned in another metal layer, (iii) a metallic ground plane formed in a layer spaced from the array of metallic top elements, the metallic ground plane having been formed from still another metal layer, and (iv) inductive elements coupling each of the top elements in the array of metallic top elements with said ground plan. An array of remotely controlled switches are provided for coupling selected ones of said antenna segments together.
摘要翻译：柔性天线阵列包括多层薄金属和布置为层间夹层的柔性绝缘介质。夹层的每个层根据需要被图案化以限定：（i）在金属层之一中图案化的天线段，（ii）形成在与天线段间隔开的层中的金属顶部元件阵列，金属顶部阵列元件在另一金属层中被图案化，（iii）金属接地平面，其形成在与金属顶部元件阵列间隔开的层中，金属接地平面已由另一金属层形成，以及（iv）金属顶部元素阵列中的顶部元素具有所述平面图。提供了一组遥控开关，用于将选定的天线段耦合在一起。

7. 发明授权

US07053737B2 Stress bimorph MEMS switches and methods of making same 失效
公开(公告)号：US07053737B2
公开(公告)日：2006-05-30
申请号：US10251677
申请日：2002-09-19
申请人： Robert N. Schwartz , Ming Wu , Tsung-Yuan Hsu , Adele E. Schmitz , Robert Y. Loo , James H. Schaffner , Gregory L. Tangonan
发明人： Robert N. Schwartz , Ming Wu , Tsung-Yuan Hsu , Adele E. Schmitz , Robert Y. Loo , James H. Schaffner , Gregory L. Tangonan
IPC分类号： H01H51/22
CPC分类号： H01H59/0009 , H01G5/18 , H01G5/40 , H01H1/20 , H01H2059/0018 , H01H2059/0072 , H01H2059/0081
摘要： A micro-electromechanical system (MEMS) switch formed on a substrate, the switch comprising a transmission line formed on the substrate, a substrate electrostatic plate formed on the substrate, and an actuating portion. The actuating portion comprises a cantilever anchor formed on the substrate and a cantilevered actuator arm extending from the cantilever anchor. Attraction of the actuator arm toward the substrate brings an electrical contact into engagement with the portions of the transmission line separated by a gap, thus bridging the transmission line gap and closing the circuit. In order to maximize electrical isolation between the transmission line and the electrical contact in an OFF-state while maintaining a low actuation voltage, the actuator arm is bent such that the minimum separation distance between the transmission line and the electrical contact is equal to or greater than the maximum separation distance between the substrate electrostatic plate and arm electrostatic plate.

8. 发明授权

US06888420B2 RF MEMS switch matrix 失效
标题翻译：射频MEMS开关矩阵
公开(公告)号：US06888420B2
公开(公告)日：2005-05-03
申请号：US10407056
申请日：2003-04-03
申请人： James H. Schaffner , Robert Y. Loo
发明人： James H. Schaffner , Robert Y. Loo
IPC分类号： H01H59/00 , H01H67/22 , H01P1/12 , H01P1/10
CPC分类号： H01P1/127 , H01H59/0009 , H01H67/22
摘要： A broadband multiple input, multiple output switch matrix. The switch matrix comprises multiple crosspoint switch element tiles. Each tile comprises RF MEMS switches disposed on a substrate to provide a crosspoint switching capability. The crosspoint switch element tiles are disposed in a flip-chip manner on the upper side of an RF substrate that provides RF connectivity between the various crosspoint switch element tiles. A bias line substrate disposed on the lower side of the RF substrate receives control signals for the crosspoint switch element tiles and routes the signals through the RF substrate using vias in the RF substrate.
摘要翻译：宽带多输入，多输出开关矩阵。开关矩阵包括多个交叉点开关元件瓦片。每个瓦片包括设置在基板上的RF MEMS开关以提供交叉点切换能力。交叉点开关元件瓦片以倒装芯片的方式设置在提供各种交叉点开关元件瓦片之间的RF连接的RF基板的上侧。设置在RF基板的下侧的偏置线基板接收用于交叉点开关元件瓦片的控制信号，并且使用RF基板中的通孔将信号路由到RF基板。

9. 发明授权

US06469677B1 Optical network for actuation of switches in a reconfigurable antenna 有权
标题翻译：用于在可重新配置的天线中启动开关的光网络
公开(公告)号：US06469677B1
公开(公告)日：2002-10-22
申请号：US09870294
申请日：2001-05-30
申请人： James H. Schaffner , Tsung-Yuan Hsu , Robert Y. Loo
发明人： James H. Schaffner , Tsung-Yuan Hsu , Robert Y. Loo
IPC分类号： H01Q324
CPC分类号： H01Q21/062 , H01Q9/14 , H01Q9/16 , H01Q21/0006
摘要： Method and apparatus for actuating switches in a reconfigurable antenna array. Micro electro-mechanical system (MEMS) switches span gaps between antenna elements disposed on an antenna substrate. An integrated optic waveguide network which directs optical energy towards the MEMS switches is contained in a superstrate disposed above the antenna elements and substrate. The MEMS switches are formed on a semi-insulating substrate. When illuminated, the resistance of the semi-insulating substrate is lowered so as the reduce the resistance between the control contacts. The antenna array is reconfigured by directing optical energy to the photo-voltaic cells connected to selected MEMS switches to close those MEMS switches, thereby electrically connecting selected antenna elements and by directing optical energy to the semi-insulating substrate of selected MEMS switches to open those MEMS switches, thereby electrically disconnecting selected antenna elements.
摘要翻译：用于在可重构天线阵列中启动开关的方法和装置。微电子机械系统（MEMS）开关跨越设置在天线基板上的天线元件之间的间隙。将光能引导到MEMS开关的集成光波导网络被包含在设置在天线元件和衬底之上的衬底中。 MEMS开关形成在半绝缘基板上。当照明时，半绝缘基板的电阻降低，从而降低控制触点之间的电阻。通过将光能引导到连接到选定的MEMS开关的光伏电池来重新配置天线阵列，以关闭那些MEMS开关，从而电连接所选择的天线元件，并通过将光能引导到所选择的MEMS开关的半绝缘衬底以打开那些 MEMS开关，从而电气断开选定的天线元件。

10. 发明授权

US06440767B1 Monolithic single pole double throw RF MEMS switch 失效
标题翻译：单片双极射频MEMS开关
公开(公告)号：US06440767B1
公开(公告)日：2002-08-27
申请号：US09767321
申请日：2001-01-23
申请人： Robert Y. Loo , James H. Schaffner , Adele E. Schmitz , Tsung-Yuan Hsu , Franklin A. Dolezal , Gregory L. Tangonan
发明人： Robert Y. Loo , James H. Schaffner , Adele E. Schmitz , Tsung-Yuan Hsu , Franklin A. Dolezal , Gregory L. Tangonan
IPC分类号： H01L2100
CPC分类号： H01H59/0009
摘要： Apparatus for a micro-electro-mechanical switch that provides single pole, double throw switching action. The switch comprises a single RF input line and two RF output lines. The switch additionally comprises two armatures, each mechanically connected to a substrate at one end and having a conducting transmission line at the other end with a suspended biasing electrode located on top of or within a structural layer of the armature. Each conducting transmission line has conducting dimples that protrude beyond the bottom of the armature carrying the conducting transmission line. Closure of an armature causes the dimples of the corresponding conducting transmission line to mechanically and electrically engage the RF input line and the corresponding RF output line, thus directing RF energy from the RF input line to the selected RF output line.
摘要翻译：用于微机电开关的装置，其提供单极双掷切换动作。该开关包括单个RF输入线和两个RF输出线。开关另外包括两个电枢，每个电枢在一端机械地连接到基板，并且在另一端处具有导电传输线，其中悬置的偏置电极位于电枢的结构层的顶部或内部。每个导电传输线具有突出超过承载导电传输线的电枢的底部的导电凹坑。衔铁的闭合使相应的导电传输线的凹坑机械地和电气地接合RF输入线和相应的RF输出线，从而将RF能量从RF输入线引导到所选择的RF输出线。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式