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1. 发明授权

US5933113A Simultaneous multibeam and frequency active photonic array radar apparatus 失效
标题翻译：同时多波束和频率有源光子阵列雷达装置
公开(公告)号：US5933113A
公开(公告)日：1999-08-03
申请号：US711428
申请日：1996-09-05
申请人： Irwin L. Newberg , Kapriel V. Krikorian , J. J. Lee , Robert A. Rosen , Gregory L. Tangonan
发明人： Irwin L. Newberg , Kapriel V. Krikorian , J. J. Lee , Robert A. Rosen , Gregory L. Tangonan
IPC分类号： H01Q3/04 , H01Q3/22 , H01Q3/26 , H01Q21/06 , H01Q25/00
CPC分类号： H01Q25/00 , H01Q21/061 , H01Q3/04 , H01Q3/22 , H01Q3/2676
摘要： Fiber optic delay lines in the form of a modified corporate feed having progressive phase delays and a corporate feed having equal phase delays are used to couple RF modulated light signals to detecting, mixing, amplifying and radiating devices of an active array radar. Different RF signals may be sent over the same fiber delay lines using different light colors (or wavelengths) so that the RF modulated signals in the fiber delay lines do not interact with each other. The RF signals can be put on and taken out of the fiber lines using wavelength division multiplexers, for example. This provides an array with a single optical manifold that allows simultaneous full aperture operation at multiple frequencies and/or beams over a wide operating frequency range.
摘要翻译：使用具有逐行相位延迟的修改后的公司馈送形式的光纤延迟线和具有相等相位延迟的公司馈线将RF调制光信号耦合到有源阵列雷达的检测，混合，放大和辐射器件。可以使用不同的光色（或波长）在相同的光纤延迟线上发送不同的RF信号，使得光纤延迟线中的RF调制信号彼此不相互作用。例如，可以使用波分复用器将RF信号放在光纤线路中并从光纤线路中取出。这提供了具有单个光学歧管的阵列，其允许在宽的工作频率范围内在多个频率和/或波束处同时进行全孔径操作。

2. 发明授权

US5677697A Millimeter wave arrays using Rotman lens and optical heterodyne 失效
标题翻译：使用Rotman镜头和光学外差的毫米波阵列
公开(公告)号：US5677697A
公开(公告)日：1997-10-14
申请号：US608589
申请日：1996-02-28
申请人： J. J. Lee , Willie W. Ng , Gregory L. Tangonan
发明人： J. J. Lee , Willie W. Ng , Gregory L. Tangonan
IPC分类号： G02B3/00 , G01S7/03 , G01S7/282 , G01S13/42 , H01Q3/26 , H01Q15/00 , H01Q15/02 , H01Q19/00 , H01Q25/00 , H04B10/00 , H01Q3/22
CPC分类号： G01S7/282 , H01Q15/02 , H01Q25/008 , H01Q3/2676 , G01S13/426 , G01S7/032
摘要： An optical heterodyne system provides the radiation source and beam scan control of a millimeter wave (MMW) array antenna. The heterodyne system is an optical feed system to produce the MMW by mixing the optical outputs from two lasers, distribute the signal source to an array of radiating elements through a Rotman lens and optical fibers, generate the differential phase shift for beam scan in the optical domain, change the beam direction by switching the input laser being used to illuminate the Rotman lens or by varying the frequency of one of the laser sources. The feed system includes a plurality n-1 lasers spaced along the transmit side of the lens, and a center laser disposed on the center axis of the transmit side. A l:n switch receives a command input to determine which of the n-1 lasers will operate. The beat frequency between the center laser operating frequency and that of the n-1 lasers is the MMW frequency. N optical receive elements are spaced along the output side of the Rotman lens and are connected to a corresponding photodetector by equal length optical fibers. The output of each photodetector is amplified and fed to a corresponding radiating element. The system also operates in a corresponding receive mode.
摘要翻译：光学外差系统提供毫米波（MMW）阵列天线的辐射源和波束扫描控制。外差系统是通过混合来自两个激光器的光输出来产生MMW的光学馈送系统，通过Rotman透镜和光纤将信号源分布到辐射元件阵列，在光学器件中产生用于光束扫描的差分相移通过切换用于照亮Rotman透镜的输入激光器或通过改变其中一个激光源的频率来改变光束方向。馈送系统包括沿着透镜的发射侧间隔开的多个n-1个激光器，以及设置在发射侧的中心轴上的中心激光器。 l：n开关接收命令输入，以确定n-1激光器中的哪一个将工作。中心激光器工作频率与n-1激光器之间的拍频是MMW频率。 N个光接收元件沿着Rotman透镜的输出侧间隔开，并且通过相等长度的光纤连接到相应的光电检测器。每个光电检测器的输出被放大并馈送到相应的辐射元件。该系统还以相应的接收模式工作。

3. 发明授权

US5900843A Airborne VHF antennas 失效
标题翻译：机载VHF天线
公开(公告)号：US5900843A
公开(公告)日：1999-05-04
申请号：US820488
申请日：1997-03-18
申请人： J. J. Lee
发明人： J. J. Lee
IPC分类号： H01Q1/28 , H01Q13/10 , H01Q13/22
CPC分类号： H01Q13/22 , H01Q1/286 , H01Q13/10
摘要： A compact high gain VHF antenna for airborne synthetic aperture radar to detect targets concealed behind trees and forests. The antenna is formed by cutting a slotline in the middle of the top wall of a very thin waveguide along its axis. The waveguide can be folded and mounted on the underside of the wings of an aircraft with minimum protrusion and wing drag. The antenna produces a downward and side-looking beam with horizontal polarization for maximum foliage penetration and target detection. The antenna design can be scaled to any frequency for ground based and shipboard applications.
摘要翻译：用于机载合成孔径雷达的紧凑型高增益VHF天线，用于检测隐藏在树木和森林后面的目标。天线通过沿其轴线在非常薄的波导的顶壁的中间切割槽线而形成。波导可以折叠并安装在飞机机翼的下侧，具有最小的突起和机翼阻力。天线产生具有水平极化的向下和侧视光束，以最大化叶子穿透和目标检测。天线设计可以扩展到地面和船上应用的任何频率。

4. 发明授权

US5841405A Octave-band antennas for impulse radios and cellular phones 失效
标题翻译：用于脉冲无线电和蜂窝电话的八度波段天线
公开(公告)号：US5841405A
公开(公告)日：1998-11-24
申请号：US636621
申请日：1996-04-23
申请人： J. J. Lee , Stan W. Livingston
发明人： J. J. Lee , Stan W. Livingston
IPC分类号： H01Q9/26 , H01Q21/29 , H01Q25/00 , H01Q21/00
CPC分类号： H01Q21/293 , H01Q25/005 , H01Q9/26
摘要： An omnidirectional antenna structure that includes oppositely facing, parallel first and second planar dipole arrays (11, 12), each dipole array including side by side substantially identically shaped planar dipole elements (110) having expanded shape dipole wings (51c, 52c). Also disclosed is a sectorial coverage antenna that includes a single planar array of side by side substantially identically shaped planar dipole elements having expanded shape dipole wings.
摘要翻译：一种包括相对面对的平行的第一和第二平面偶极子阵列（11,12）的全向天线结构，每个偶极阵列包括具有扩展形状的偶极翼（51c，52c）的大致相同形状的平面偶极子元件（110）。还公开了一种扇形覆盖天线，其包括具有扩展形状偶极翼的基本上相同形状的平面偶极元件的单个平面阵列。

5. 发明授权

US5977841A Noncontact RF connector 失效
标题翻译：非接触射频连接器
公开(公告)号：US5977841A
公开(公告)日：1999-11-02
申请号：US771075
申请日：1996-12-20
申请人： J. J. Lee , Donald Charlton , William L. Lange
发明人： J. J. Lee , Donald Charlton , William L. Lange
IPC分类号： H01P1/04
CPC分类号： H01P1/045 , Y10S439/95
摘要： An RF connector comprising a coaxial transmission structure that transmits RF power at RF and microwave frequencies through a dielectric seal. Portions of the connector on either side of the seal do not make metal to metal contact. The connector has input and output connector portions having outer conductors coaxially disposed around inner conductors with dielectric material disposed therebetween. Impedance matching transition portions abut each side of the dielectric seal that have a relatively large diameter adjacent the dielectric seal that transitions to a relatively small diameter distal from the dielectric seal. Tapered and stepped impedance matching transition portions may be employed. A shunt capacitance is disposed approximately one quarter wavelength from each side of the dielectric seal in the stepped transition version. RF energy transmitted by way of the input connector portion is capacitively coupled through the dielectric seal to the output connector portion.
摘要翻译：一种RF连接器，包括通过介电密封件以RF和微波频率传输RF功率的同轴传输结构。密封件两侧的连接器部分不会使金属与金属接触。连接器具有输入和输出连接器部分，其具有围绕内部导体共轴设置的外部导体，其间设有介电材料。阻抗匹配过渡部分邻接绝缘密封件的相对较大直径的电介质密封件的每一侧，该电介质密封件过渡到远离电介质密封件的较小直径。可以采用锥形和阶梯式阻抗匹配过渡部分。在阶梯式转换版本中，分流电容从电介质密封件的每侧设置大约四分之一波长。通过输入连接器部分传输的RF能量通过电介质密封件电容耦合到输出连接器部分。

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