公开(公告)号：US20130234890A1

公开(公告)日：2013-09-12

申请号：US13416738

申请日：2012-03-09

申请人： Frank CHETHIK ,  Richard D. BREEN, JR.

发明人： Frank CHETHIK ,  Richard D. BREEN, JR.

IPC分类号： H01Q3/12

CPC分类号： H01Q3/267 ,  H01Q3/36 ,  H01Q21/06

摘要： Aspects of the disclosure provide an antenna array system. The antenna array system includes a plurality of antenna elements and phase-shift switching circuitry. The plurality of antenna elements are organized in an array and configured to form a non-planar shaped antenna array surface. Each of the plurality of antenna elements is switchable to one of a plurality of phase shift states. The phase-shift switching circuitry is configured to switch each of the plurality of antenna elements to one of the plurality of phase shift states based on phase control signals. In an example, the phase-shift switching circuitry switches a first set of antenna elements to a first phase shift state and switches at least a second set of antenna elements to a second phase shift state to steer an antenna beam in a direction.

摘要翻译： 本公开的方面提供一种天线阵列系统。 天线阵列系统包括多个天线元件和相移切换电路。 多个天线元件被组织成阵列并且被配置成形成非平面形状的天线阵列表面。 多个天线元件中的每一个可切换到多个相移状态之一。 相移切换电路被配置为基于相位控制信号将多个天线元件中的每一个切换到多个相移状态之一。 在一个示例中，相移切换电路将第一组天线元件切换到第一相移状态，并将至少第二组天线元件切换到第二相移状态，以便在一个方向上引导天线波束。

公开(公告)号：US06567477B1

公开(公告)日：2003-05-20

申请号：US08959811

申请日：2000-03-14

申请人： David D. Feldman ,  Frank Chethik

发明人： David D. Feldman ,  Frank Chethik

IPC分类号： H04L2736

CPC分类号： H04L27/3422

摘要： An improved constellation pruning and partial Gray coding method for generating constellations that are transmitted by a transmitter. The approximate symbol error rate (SER) for each possible subconstellation is first determined. Then, each of the subconstellations are scaled in terms of power so that each subconstellation has the same symbol error rate. Then, the subconstellation that requires the least amount of power to generate is selected as the pruned constellation for use by the transmitter. After the pruned constellation is determined, it is then coded a single time, and this coded pruned constellation is used by the transmitter.

摘要翻译： 改进的星座修剪和部分格雷编码方法，用于生成由发射机发射的星座。 首先确定每个可能的子星座的近似符号错误率（SER）。 然后，根据功率对每个子结构进行缩放，使得每个子星座具有相同的符号错误率。 然后，选择需要最少功率产生的子星座被选择为被发射机使用的修剪的星座。 在确定了修剪的星座之后，将其编码为一次，并且该编码的修剪星座由发射机使用。

公开(公告)号：US5543811A

公开(公告)日：1996-08-06

申请号：US384789

申请日：1995-02-07

申请人： Frank Chethik

发明人： Frank Chethik

IPC分类号： H01Q21/28 ,  H01Q21/00

CPC分类号： H01Q21/28

摘要： A phased array antenna (PAA) that is particularly adapted to accommodate communications with low earth orbiting (LEO) satellites includes three antenna faces which comprise a phased array of radiating elements, each antenna face is triangular and the three faces form a triangular pyramid. Each triangular face has a height h and a base length B. B and h are chosen to optimize the antenna's gain variation with beam elevation angle to compensate for the path losses dependent on beam elevation angle. At low elevation, increased free space loss in incurred due to longer range to a low earth orbiting satellite, and more rain and atmospheric loss is incurred due to longer path through the atmosphere compared with the losses at higher elevations or at zenith. Since the intrinsic shape compensates for the elevation dependent losses, the PAA design minimizes total array area compared with other known geometries and thus exhibits lower cost.

摘要翻译： 特别适用于适应与低地球轨道（LEO）卫星的通信的相控阵天线（PAA）包括三个天线面，其包括辐射元件的相控阵列，每个天线面是三角形的，并且三个面形成三角锥。 每个三角形面具有高度h和基本长度B.选择B和h以根据光束仰角来优化天线的增益变化，以补偿取决于光束仰角的路径损耗。 在低海拔地区，由于距离较低的地球轨道卫星更长的距离，造成的自由空间损失增加，与较高海拔或天顶的损失相比，由于较大的路径通过大气层，造成更多的雨水和大气损失。 由于内在形状补偿了高程依赖损耗，所以与其他已知几何形状相比，PAA设计使总阵列面积最小化，因此表现出较低的成本。

公开(公告)号：US5237292A

公开(公告)日：1993-08-17

申请号：US907151

申请日：1992-07-01

申请人： Frank Chethik

发明人： Frank Chethik

IPC分类号： H04L27/36

CPC分类号： H04L27/362 ,  H04L27/368

摘要： Digital signals are converted to phase and amplitude altered, periodic, analog signals and emplaced on an output link. The system is adaptive and includes a plurality of simple quadrature phase shift keying modulators, each modulator having a plurality of controlling digital inputs, the states of which determine which of a plurality of phase displaced signals will be outputted. A local oscillator provides a periodic sinusoidal signal to each QPSK modulator. Summing circuits combine the outputs of the modulators so as to produce a constellation of phase and amplitude-displaced output sinusoidal signals. A processor/mapper combination enables conversion of a first set of digital inputs to a different set of digital outputs in accordance with a control input. Thus, the processor enables the alteration of the constellation of outputs in accordance with a control input, which may be indicative of the condition of a transmission facility.

公开(公告)号：US08774730B1

公开(公告)日：2014-07-08

申请号：US13349022

申请日：2012-01-12

申请人： Frank Chethik ,  Timothy A. Becker

发明人： Frank Chethik ,  Timothy A. Becker

IPC分类号： H04B17/00

CPC分类号： H04B17/402 ,  G06F11/1423 ,  G06F11/2007

摘要： A field programmable microwave array is provided. The field programmable microwave array includes one or more RF elements interconnected by an array of switching elements. The switching elements enable the field programmable microwave array to perform one or more RF or microwave subassembly functions.

摘要翻译： 提供现场可编程微波阵列。 现场可编程微波阵列包括通过开关元件阵列互连的一个或多个RF元件。 开关元件使得现场可编程微波阵列能够执行一个或多个RF或微波子组件功能。

公开(公告)号：US06593827B2

公开(公告)日：2003-07-15

申请号：US09998566

申请日：2001-11-16

申请人： Frank Chethik ,  Eric Fain

发明人： Frank Chethik ,  Eric Fain

IPC分类号： H03C300

CPC分类号： H04L27/361

摘要： An autocalibrating modulating array transmitter 10 and autocalibration method 30. The autocalibrating modulating array transmitter is used to gain-balance and phase-balance parallel amplifier stages 11 for coherent combining. The novelty of the autocalibration technique involves periodic substitution of calibration symbols into a valid data stream, the use of only the error magnitude (as opposed to magnitude and phase), and a random selection of either gain or phase adjustments to avoid limit cycles.

摘要翻译： 自动校准调制阵列发射机10和自动校准方法30.自动校准调制阵列发射机用于平衡并相位平衡并行放大器级11用于相干组合。 自动校准技术的新颖性涉及将校准符号定期替换为有效数据流，仅使用误差幅度（与幅度和相位相反），以及随机选择增益或相位调整以避免限制循环。

公开(公告)号：US06195195B1

公开(公告)日：2001-02-27

申请号：US09266618

申请日：1999-03-11

申请人： Frank Chethik

发明人： Frank Chethik

IPC分类号： G02B2600

CPC分类号： G02B26/00 ,  G02B26/06 ,  G02B2207/117

摘要： A delay element and method for delaying an RF/microwave signal. The delay element uses a laser and an RF modulator to modulate a laser beam using an applied RF/microwave input signal. Collimating optics collimate the modulated laser beam and couple the beam to a delay element that controllably delays the modulated laser beam and hence the RF/microwave signal. The delay element has fixed retroreflectors, moveable retroreflectors disposed on a moveable armature or permanent magnet, and a coil disposed on a spring and coupled to the moveable armature. The beam is reflected multiple times between the fixed and multiple moveable retroreflectors. A dash pot may be used to suppress mechanical oscillation of the permanent magnet and moveable retroreflectors. A delay control current source supplies current to the coil to control movement of the moveable retroreflectors and thus the path length and delay experienced by the modulated laser beam. An RF detector detects and recovers the RF input signal to provide a delayed RF output signal from the delay element.

摘要翻译： 一种用于延迟RF /微波信号的延迟元件和方法。 延迟元件使用激光器和RF调制器来使用所施加的RF /微波输入信号来调制激光束。 准直光学器件准直调制的激光束并将光束耦合到延迟元件，该延迟元件可控制地延迟调制的激光束并因此延迟RF /微波信号。 延迟元件具有固定的后向反射器，设置在可移动电枢或永磁体上的可移动后向反射器，以及设置在弹簧上并联接到可移动衔铁的线圈。 光束在固定和多个可移动的后向反射器之间反射多次。 可以使用仪表板来抑制永磁体和可移动的后向反射器的机械振荡。 延迟控制电流源向线圈提供电流以控制可移动后向反射器的移动，并因此控制经调制的激光束经历的路径长度和延迟。 RF检测器检测并恢复RF输入信号以提供来自延迟元件的延迟RF输出信号。

公开(公告)号：US6144786A

公开(公告)日：2000-11-07

申请号：US266646

申请日：1999-03-11

申请人： Frank Chethik

发明人： Frank Chethik

IPC分类号： G02B6/28

CPC分类号： G02B6/2861

摘要： Delay systems that employ switched discrete delay elements and continuously variable controlled delay elements to achieve a continuous (glitchless) delay range. The delay systems incorporate several technologies and subsystems to realize very high bandwidth-time product delay elements to provide for precise and continuous delay control.

摘要翻译： 延迟系统采用开关离散延迟元件和连续可变的受控延迟元件，以实现连续（无毛刺）延迟范围。 延迟系统包含几种技术和子系统，以实现非常高的带宽时间产品延迟元件，以提供精确和连续的延迟控制。

公开(公告)号：US06961025B1

公开(公告)日：2005-11-01

申请号：US10643817

申请日：2003-08-18

申请人： Frank Chethik ,  Richard Breen, Jr.

发明人： Frank Chethik ,  Richard Breen, Jr.

IPC分类号： H01Q1/28 ,  H01Q3/24 ,  H01Q13/00 ,  H01Q21/06 ,  H01Q25/00

CPC分类号： H01Q25/00 ,  H01Q1/288 ,  H01Q3/24 ,  H01Q21/064

摘要： An antenna array system comprising a plurality of antenna elements organized in an array and configured to form a non-planar shaped antenna array surface. The antenna array system further comprises switching circuitry configured to switch each of the plurality of antenna elements on or off based on control signals. In one embodiment, the antenna array system is configured such that the antenna beam direction can be steered in a first direction by switching on a first set of antenna elements, and the antenna beam direction can be steered in a second direction by switching on a second set of antenna elements. In one embodiment, the second set of antenna elements can include one or more antenna elements from the first set of antenna elements, or the second set of antenna elements may not include any antenna elements from the first set.

摘要翻译： 一种天线阵列系统，包括以阵列组织并被配置成形成非平面形状的天线阵列表面的多个天线元件。 天线阵列系统还包括被配置为基于控制信号来开启或关闭多个天线元件中的每一个的开关电路。 在一个实施例中，天线阵列系统被配置为使得天线波束方向可以通过接通第一组天线元件而沿第一方向转向，并且天线波束方向可以通过接通第二方向而在第二方向上转向 天线元件组。 在一个实施例中，第二组天线元件可以包括来自第一组天线元件的一个或多个天线元件，或者第二组天线元件可以不包括来自第一组的任何天线元件。

公开(公告)号：US6151481A

公开(公告)日：2000-11-21

申请号：US39206

申请日：1998-03-13

申请人： Dennis L. Wilson ,  Frank Chethik

发明人： Dennis L. Wilson ,  Frank Chethik

IPC分类号： H04B1/707 ,  H04B7/08 ,  H04B7/185 ,  H04B7/135 ,  H04B1/06 ,  H04B10/06 ,  H04B1/17

CPC分类号： H04B7/18517 ,  H04B7/0865 ,  H04B2001/70706

摘要： A combining technique for coherently combining signals transmitted from a moving satellite that are received by separate antennas. The combining technique corrects for differential delays that are large enough to cause misalignments in the symbols of the communication signal as well as the phase of the signal. Further the combining technique tracks changes in the differential delay, keeping the phase and the symbols properly aligned for combining.

摘要翻译： 一种用于相干地组合由单独天线接收的从移动卫星发射的信号的组合技术。 组合技术校正足够大的差分延迟，导致通信信号的符号以及信号的相位失调。 此外，组合技术跟踪差分延迟的变化，保持相位和符号正确对齐以进行组合。