-
公开(公告)号：US5377287A
公开(公告)日：1994-12-27
申请号：US811591
申请日：1991-12-19
申请人： Jar J. Lee , George I. Tsuda
发明人： Jar J. Lee , George I. Tsuda
CPC分类号： G02B6/2848
摘要： A fiber optic corporate power divider/combiner for use in fiber optic systems is provided. When functioning as an optical divider, the invention includes a dielectric lens for converting incoming optical energy from a divergent spherical wave to a plane wave. A micro-lens array in optical alignment with the dielectric lens functions to partition and focus the plane wave to provide a coherent phase optical dot pattern. A fiber bundle is provided to receive and uniformly distribute the coherent phase optical dot pattern. When functioning as an optical combiner, the invention includes the micro-lens array to convert an incoming coherent phase optical dot pattern from a plurality of divergent spherical waves to a plane wave. The dielectric lens optically aligned with the micro-lens array receives and converts the plane wave to a convergent spherical wave and a single optical fiber receives and transforms the convergent spherical wave into parallel rays for transmission. In a preferred embodiment, the dielectric lens comprises a single hyperbolic lens which is in juxtaposition to a plurality of hyperbolic lenses forming the micro-lens array. The number of lenses in the micro-lens array is equal to the number of optical fibers in the bundle for permitting optimum transmission of optical energy.
摘要翻译： 提供了一种用于光纤系统的光纤公司功率分配器/组合器。 当用作分光器时，本发明包括用于将来自发散球面波的入射光能转换成平面波的电介质透镜。 与电介质透镜光学对准的微透镜阵列用于分隔和聚焦平面波以提供相干相位光点图案。 提供纤维束以接收并均匀分布相干相位光点图案。 当用作光学组合器时，本发明包括微透镜阵列，用于将输入的相干相位光点图案从多个发散球面波转换为平面波。 与微透镜阵列光学对准的介质透镜接收并将平面波转换为会聚球面，单个光纤接收并转换会聚球形波到平行光线进行透射。 在优选实施例中，介电透镜包括与形成微透镜阵列的多个双曲透镜并置的单个双曲透镜。 微透镜阵列中的透镜数量等于光束中光纤的数量，以允许光能的最佳传输。
-
公开(公告)号：US20100097277A1
公开(公告)日：2010-04-22
申请号：US12462709
申请日：2009-08-07
申请人： Jar J. Lee , Clifton Quan , Stanley W. Livingston
发明人： Jar J. Lee , Clifton Quan , Stanley W. Livingston
IPC分类号： H01Q1/28
CPC分类号： H01Q1/1292 , H01Q1/286 , H01Q3/46 , H01Q5/42 , H01Q21/0018
摘要： A space-fed conformal array for a high altitude airship includes a primary array lens assembly adapted for conformal mounting to a non-planar airship surface. The lens assembly includes a first set of radiator elements and a second set of radiator elements, the first set and the second set spaced apart by a spacing distance. The first set of radiators faces outwardly from the airship surface to provide a radiating aperture. The second set of radiators faces inwardly toward an inner space of the airship, for illumination by a feed array spaced from the second set of radiators.
摘要翻译： 用于高空飞艇的空间馈电保形阵列包括适于安装到非平面飞艇表面的主阵列透镜组件。 透镜组件包括第一组散热器元件和第二组散热器元件，第一组和第二组间隔开间隔距离。 第一组散热器从飞艇表面向外面向外提供辐射孔。 第二组散热器向内朝向飞艇的内部空间，用于通过与第二组散热器间隔开的进给阵列进行照明。
-
公开(公告)号：US20090128430A1
公开(公告)日：2009-05-21
申请号：US09771300
申请日：2001-01-25
申请人： Jar J. Lee , Stan W. Livingston
发明人： Jar J. Lee , Stan W. Livingston
CPC分类号： H01Q1/281 , H01Q1/286 , H01Q15/006 , H01Q21/067
摘要： A conformal end-fire antenna with a high impedance ground surface structure and an array of radiating elements formed thereon. The ground surface structure includes an array of metal protrusions on a electrically conductive sheet, the metal protrusions arranged in a two-dimensional lattice. The ground surface structure acts as a magnetic surface at an RF frequency band of interest, functioning as an electrical short at DC, and as a mirror which reflects an RF field in the frequency band with virtually no phase reversal.
摘要翻译： 具有高阻抗地表面结构和形成在其上的辐射元件阵列的共形终端天线。 地表结构包括在导电片上的金属突起阵列，金属突起以二维晶格布置。 地表面结构充当感兴趣的RF频带处的磁性表面，用作DC的电短路，并且作为在几乎没有反相的频带中反射RF场的反射镜。
-
公开(公告)号：US07061443B2
公开(公告)日：2006-06-13
申请号：US10815274
申请日：2004-04-01
IPC分类号： H01Q13/10
CPC分类号： H01Q21/005
摘要： A millimeter wave (MMW) antenna array includes a continuous transverse stub (CTS) radiating aperture comprising a set of spaced continuous transverse stubs, each having a longitudinal extent. A series feed system is coupled to an excitation source for exciting the stubs with MMW electromagnetic energy having a linear phase progression along the longitudinal extent of the stubs to produce an array beam which can be scanned over a beam scan range by changing the excitation frequency.
摘要翻译： 毫米波（MMW）天线阵列包括连续横向短截线（CTS）辐射孔，其包括一组间隔开的连续横向短截线，每个具有纵向延伸。 串联馈送系统耦合到激励源，用于以沿着短截线的纵向范围具有线性相位前进的MMW电磁能激发短截线，以产生可以通过改变激励频率在波束扫描范围上扫描的阵列波束。
-
公开(公告)号：US06849924B2
公开(公告)日：2005-02-01
申请号：US10143180
申请日：2002-05-09
申请人： Robert C. Allison , Jar J. Lee
发明人： Robert C. Allison , Jar J. Lee
CPC分类号： H01H67/22 , H01H1/0036 , H01L2224/48095 , H01L2224/48227 , H01L2224/49109 , H01L2924/15192 , H01L2924/30111 , H01P1/127 , H01L2924/00014 , H01L2924/00
摘要： A multilayer switching assembly for switching high frequency signals has MEMS structures on a ceramic substrate having a top surface, a bottom surface and a plurality of insulating layers. The insulating layers are separated by a first conductor and a second conductor. The first conductor is connected to a ground potential. The second conductor is separated from the first conductor by one of the insulating layers. The second conductor presents a specific impedance (50 ohms) with respect to the first conductor to high frequency signals traveling on the second conductor.64 MEMS structures are mounted on the top surface. Each MEMS has an input, an output, and a control. The input connected to the second conductor. The output is connected to a coplanar waveguide placed on the top surface. The control is connected to the bottom surface.The input to each MEMS is electrically shielded from the output and from the control by a third conductor connected to the first (grounded) conductor. The third conductor traverses one or more of the insulating layers thereby acting as a shield and precluding the high frequency signals presented to the input from propagating to the output and to the control. The 64 MEMS are arranged in a square 8 by 8 matrix, as well as their controls. High frequency inputs and outputs to be switched by the MEMS are placed on the periphery of the substrate to further enhance the separation of signals. Terminating resistors (50 ohms) are also placed near the periphery.
摘要翻译： 用于切换高频信号的多层开关组件在具有顶表面，底表面和多个绝缘层的陶瓷基板上具有MEMS结构。 绝缘层由第一导体和第二导体隔开。 第一个导体连接到地电位。 第二导体通过绝缘层之一与第一导体分离。 第二导体相对于第一导体具有特定的阻抗（50欧姆）到在第二导体上行进的高频信号.64 MEMS结构安装在顶表面上。 每个MEMS都有一个输入，一个输出和一个控制。 输入连接到第二导体。 输出端连接到位于顶面上的共面波导管。 控制器连接到底表面。每个MEMS的输入端通过连接到第一（接地）导体的第三导体与输出端和控制器电屏蔽。 第三导体横穿绝缘层中的一个或多个，从而用作屏蔽，并且阻止呈现给输入端的高频信号传播到输出端和控制端。 64个MEMS被排列成方形8×8矩阵，以及它们的控制。 通过MEMS切换的高频输入和输出被放置在基板的周边上，以进一步增强信号的分离。 终端电阻（50欧姆）也放置在外围附近。
-
公开(公告)号：US5600286A
公开(公告)日：1997-02-04
申请号：US315008
申请日：1994-09-29
申请人： Stan W. Livingston , Jar J. Lee
发明人： Stan W. Livingston , Jar J. Lee
CPC分类号： H01P5/08
摘要： A transmission line-to-waveguide transition that includes a microstrip impedance transformer for matching the impedance of an input transmission line to that of a flared slotline is disclosed. The slotline's width is sufficiently small such that when the transition is inserted into a waveguide the slotline is spaced inward from the waveguide's inner walls. A balun bi-directionally couples the unbalanced signal on the microstrip to a balanced signal on the slotline. The signal propagates along the slotline and is capacitively coupled to the waveguide. A trimmable tuning stub is used to adjust the resonant frequency of a parasitic cavity formed between the transition and the waveguide to increase the transition's effective bandwidth. A tapered dielectric insert is positioned inside the waveguide to decrease its size and to improve the coupling efficiency of the transition.
摘要翻译： 公开了一种包括用于将输入传输线的阻抗与扩口槽线的阻抗匹配的微带阻抗变换器的传输线到波导转变。 槽槽的宽度足够小，使得当过渡件插入波导时，槽线从波导的内壁向内间隔开。 平衡 - 不平衡变压器将微带上的不平衡信号双向耦合到槽线上的平衡信号。 信号沿着槽线传播并且电容耦合到波导。 可调谐调谐短线用于调整形成在转换和波导之间的寄生空腔的谐振频率，以增加转换的有效带宽。 锥形电介质插入件位于波导内部以减小其尺寸并提高过渡的耦合效率。
-
7.发明授权
公开(公告)号：US5493304A
公开(公告)日：1996-02-20
申请号：US315007
申请日：1994-09-29
申请人： Jar J. Lee , Stan W. Livingston , Irwin L. Newberg
发明人： Jar J. Lee , Stan W. Livingston , Irwin L. Newberg
CPC分类号： G01S7/4052 , H01Q3/267 , G01S2007/4091 , G01S2007/4095
摘要： A calibration and diagnostic system and method for evaluating the performance of a wide band array utilizing a true-time-delay beamforming network. A short pulse typically on the order of a 2 nanoseconds is synthesized by transmission of a large number of discrete, equally spaced frequencies over the bandwidth over a short period of time, during which the system response (amplitude and phase) is measured and stored in a computer. The collected data is then transformed into the time domain to demonstrate the range resolution of the system. By signal injection with a built-in calibration system, the setting of each programmable delay line of the array can be calibrated. A fiber-optic test set is used as a transponder in the far field to perform complete end-to-end tests of the array system.
摘要翻译： 一种用于利用真实时间延迟波束成形网络评估宽带阵列的性能的校准和诊断系统和方法。 通常在短时间内通过在带宽上传输大量离散的等间隔的频率来合成通常在2纳秒级的短脉冲，在此期间系统响应（振幅和相位）被测量并存储在 一台电脑。 然后将收集的数据转换为时域，以演示系统的范围分辨率。 通过内置校准系统的信号注入，可以校准阵列的每个可编程延迟线的设置。 光纤测试仪被用作远场中的应答器，以对阵列系统执行完整的端到端测试。
-
公开(公告)号：US20110221644A1
公开(公告)日：2011-09-15
申请号：US12722397
申请日：2010-03-11
CPC分类号： H01Q9/0421 , H01Q19/005 , H01Q21/061
摘要： A dual-patch antenna includes a ground plane, a first patch plate parallel to and separated from the ground plane by a separation distance, and a second patch plate separated from the ground plane by the separation distance. The first and second patch plates are coplanar and separated by a radiating slot. An excitation probe isolatedly passes through the ground plane and connects to the first patch plate. A first wall connects an edge of the first patch plate to the ground plane. The first wall is located approximately ¼ wavelength of a mid-band operating frequency from the radiating slot. A second wall connects an edge of the second patch plate to the ground plane. The second wall is located approximately ¼ wavelength of the mid-band operating frequency from the radiating slot. The dual-patch antennas may be organized in an array.
摘要翻译： 双拼接天线包括接地平面，与接地平面平行并与之分开的间隔距离的第一拼接板和与接地平面隔开间隔距离的第二拼接板。 第一和第二贴片板共面并由辐射槽隔开。 激发探头隔离通过接地平面并连接到第一个贴片板。 第一壁将第一贴片板的边缘连接到接地平面。 第一个墙壁距离辐射槽位于中频带工作频率的大约1/4波长处。 第二壁将第二贴片的边缘连接到接地平面。 第二个墙壁距辐射槽位于中频带工作频率的大约1/4波长处。 双层天线可以组织成阵列。
-
公开(公告)号：US07474263B1
公开(公告)日：2009-01-06
申请号：US11981183
申请日：2007-10-31
IPC分类号： H01Q3/00
CPC分类号： H01Q21/0018 , H01Q1/28 , H01Q3/242 , H01Q3/36 , H01Q21/205
摘要： An electronically scanned antenna may include a plurality of space-fed, contiguous subarrays arranged in an annular region, each subarray including an inner set of radiating elements facing inwardly, an outer-facing set of radiating elements, and a feed system for illuminating the inner set of radiating elements. A plurality of RF amplifiers are coupled through a commutation switch matrix to selected ones of the subarray feed horn systems to illuminate a desired sector with RF energy.
摘要翻译： 电子扫描天线可以包括布置在环形区域中的多个空间馈送的连续子阵列，每个子阵列包括面向内的内部一组辐射元件，面向外的一组辐射元件，以及用于照亮内部 一套辐射元件。 多个RF放大器通过换向开关矩阵耦合到选定的子阵列馈电喇叭系统中，以用RF能量照亮期望的扇区。
-
公开(公告)号：US20080030413A1
公开(公告)日：2008-02-07
申请号：US11499593
申请日：2006-08-04
申请人： Jar J. Lee , Clifton Quan , Stanley W. Livingston
发明人： Jar J. Lee , Clifton Quan , Stanley W. Livingston
IPC分类号： H01Q1/28
CPC分类号： H01Q1/1292 , H01Q1/286 , H01Q3/46 , H01Q5/42 , H01Q21/0018
摘要： A space-fed conformal array for a high altitude airship includes a primary array lens assembly adapted for conformal mounting to a non-planar airship surface. The lens assembly includes a first set of radiator elements and a second set of radiator elements, the first set and the second set spaced apart by a spacing distance. The first set of radiators faces outwardly from the airship surface to provide a radiating aperture. The second set of radiators faces inwardly toward an inner space of the airship, for illumination by a feed array spaced from the second set of radiators.
摘要翻译： 用于高空飞艇的空间馈电保形阵列包括适于安装到非平面飞艇表面的主阵列透镜组件。 透镜组件包括第一组散热器元件和第二组散热器元件，第一组和第二组间隔开间隔距离。 第一组散热器从飞艇表面向外面向外提供辐射孔。 第二组散热器向内朝向飞艇的内部空间，用于通过与第二组散热器间隔开的进给阵列进行照明。
-
-
-
-
-
-
-
-
-
搜索结果
47 条记录 (耗时 0.021 秒)
