公开(公告)号：US4864308A

公开(公告)日：1989-09-05

申请号：US119717

申请日：1987-11-12

Applicant: Anthony R. Raab ,  William Thorpe ,  Thomas P. G. Healy

Inventor： Anthony R. Raab ,  William Thorpe ,  Thomas P. G. Healy

IPC: G01K11/00 ,  H01Q3/22

CPC classification number: G01K11/006 ,  H01Q3/22

Abstract: An electronically scanned radiometer has a dispersive serpentine antenna with one or two ports. A mixer is connected to each port with each mixer being fed by a variable frequency local oscillator. Each oscillator provides the mixer to which it is connected with a drive signal that varies in frequency. The antenna most efficiently receives one or more beams through radiators at an angle that varies with the frequency of the drive signal at the mixer. An output is received at each port and is appropriately displayed. When the serpentine has two ports the radiometer can be operated at two orthogonal polarizations. The frequency being fed to each mixer can be varied in various predetermined patterns. Scanning of the beam can be effected by changing the frequency of observation without physically rotating the antenna. Also two simultaneous beams rotating in opposite directions with independent motions can be achieved.

Abstract translation: 电子扫描辐射计具有带有一个或两个端口的分散蛇形天线。 混频器连接到每个端口，每个混频器由可变频率本地振荡器馈送。 每个振荡器提供与其频率变化的驱动信号连接的混频器。 天线最有效地以与混合器处的驱动信号的频率变化的角度通过辐射器接收一个或多个光束。 在每个端口接收到一个输出，并被适当显示。 当蛇形管具有两个端口时，辐射计可以在两个正交偏振下操作。 馈送到每个混合器的频率可以以各种预定模式改变。 可以通过改变观测频率而不使物理旋转天线来实现光束的扫描。 也可以实现具有独立运动的相反方向旋转的两个同时的光束。

公开(公告)号：US4668953A

公开(公告)日：1987-05-26

申请号：US725252

申请日：1985-04-19

Applicant: Anthony R. Raab

Inventor： Anthony R. Raab

IPC: H01P5/16 ,  H01P5/12 ,  H01Q21/22 ,  G01S3/22 ,  G01S3/24 ,  G01S3/26

CPC classification number: H01P5/12

Abstract: A Beam-forming Network includes a plurality of directional couplers and phase shifters and which can interconnect both a transmitter and a receiver to the same group of radiating elements of an antenna even though the transmitter frequency band is different and well spaced from the receiver frequency band. This is accomplished, in accordance with the invention, by using directional couplers each of which has a variable response over a wide band of frequencies but which is designed so that its response over the transmitter frequency band is stable and its response over the receiver frequency band is also stable.

Abstract translation: 波束形成网络包括多个定向耦合器和移相器，并且即使发射机频带不同并且与接收机频带相隔很远，它们也可以将发射机和接收机互连到天线的同一组辐射元件 。 根据本发明，通过使用各自在宽频带上具有可变响应但是被设计成使得其在发射机频带上的响应是稳定的并且其在接收机频带上的响应的定向耦合器来实现的 也是稳定的。

公开(公告)号：US4868574A

公开(公告)日：1989-09-19

申请号：US119716

申请日：1987-11-12

Applicant: Anthony R. Raab

Inventor： Anthony R. Raab

IPC: G01S13/66 ,  H01Q3/22

CPC classification number: H01Q3/22 ,  G01S13/66

Abstract: An electronically scanned radar system has a serpentine antenna, with at least two ports. The antenna is physically rotated. Each port has a mixer, transmitter and local oscillator feeding signals to it, the signals of the transmitter and oscillator being synchronized with one another to take advantage of the physical rotation of the antenna. The radar system can be operated in various ways to produce two independent beams simultaneously in a surveillance mode and/or tracking mode at each port. Furthermore, with the use of coupling means, the system can be operated to produce four independent beams at two different frequencies simultaneously. The system can also be operated to produce one or more beams in a surveillance mode and/or one or more beams in a tracking mode at each port. Further, the system can be operated to compensate for the physical rotation of the antenna and can avoid jammers by hopping to another frequency.

Abstract translation: 电子扫描雷达系统具有蛇形天线，至少有两个端口。 天线物理旋转。 每个端口都有一个混频器，发送器和本地振荡器向其发送信号，发射器和振荡器的信号彼此同步，以利用天线的物理旋转。 雷达系统可以以各种方式操作，以在每个端口的监视模式和/或跟踪模式下同时产生两个独立的波束。 此外，通过使用耦合装置，可以操作该系统以同时在两个不同频率处产生四个独立的波束。 该系统还可以被操作以在监视模式下产生一个或多个光束和/或在每个端口处以跟踪模式的一个或多个光束。 此外，该系统可以被操作以补偿天线的物理旋转，并且可以通过跳到另一个频率来避免干扰。

公开(公告)号：US4814775A

公开(公告)日：1989-03-21

申请号：US25271

申请日：1987-03-12

Applicant: Anthony R. Raab ,  Henry Downs

Inventor： Anthony R. Raab ,  Henry Downs

IPC: H01Q3/40 ,  H01Q25/00 ,  H01Q3/22 ,  H01Q3/24 ,  H01Q3/26

CPC classification number: H01Q25/007 ,  H01Q25/00 ,  H01Q3/40

Abstract: A reconfigurable beam-forming network for use with a transmitter has a waveguide R-switch that is interconnected with a Magic T. The R-switch contains phasing elements and is connected to a dual-mode power-dividing network, which in turn is connected to first, second and third region power-dividing networks, each having their own feed horn array. The R-switch can be moved to three different positions so that in a first position power is divided between two input ports of the dual-mode network on substantially a fifty-fifty basis with the power on the two input ports being out of phase on a positive basis. In a second position of the R-switch, power is also divided on substantially a fifty-fifty basis between the two input ports but the power is out of phase between the two ports on a negative basis. In a third position of the R-switch, substantially all of the power entering the R-switch is passed into the first input port of the dual-mode network. The power being fed to the feed horns of any one of the regions has the same phase. In a variation of the invention, the R-switch and Magic T are replaced by a variable phase shifter and Magic T.

Abstract translation: 与发射机一起使用的可重构波束形成网络具有与Magic T互连的波导R开关.R开关包含相控元件，并连接到双模功率分配网络，该双模功率分配网络又连接 到第一，第二和第三区域功率分配网络，每个具有自己的馈电喇叭阵列。 R开关可以移动到三个不同的位置，使得在第一位置上，两个输入端口上的电源相位不同，功率在基本上是五十五个基础上被划分在双模式网络的两个输入端口之间 积极的基础。 在R开关的第二位置，功率也在两个输入端口之间基本上基于五十五个基准分压，但两个端口之间的功率在负的基础上不同相。 在R开关的第三位置，进入R开关的基本上所有的功率都被传递到双模网络的第一输入端口。 供给到任何一个区域的进料角的功率具有相同的相位。 在本发明的变型中，R开关和魔术T由可变移相器和魔术T代替。