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1. 发明授权

US06137833A Programmable transmitter baseband equalizer 失效
标题翻译：可编程发射机基带均衡器
公开(公告)号：US06137833A
公开(公告)日：2000-10-24
申请号：US420980
申请日：1999-10-20
申请人： Julius Lange , Frank Chethik
发明人： Julius Lange , Frank Chethik
IPC分类号： H04L25/03 , H03H7/30 , H03H7/40 , H03H5/159
CPC分类号： H04L25/03343 , H04L2025/03401 , H04L2025/0342 , H04L2025/03509
摘要： A transversal filter equalizer comprising a programmable transmitter baseband equalizer for use in high rate digital transmitters. The programmable transmitter baseband equalizer processes digital data using a 1/2-symbol spaced transversal filter to produce I and Q baseband signals. The 1/2-symbol spaced transversal filter comprises I and Q n-bit wide shift register stages having alternate pairs of I and Q shift register stages driven by opposite phases of an input data clock, multiplying digital-to-analog converters driven by two direct tap weights and two cross tap weights, and I and Q combiners for generating I and Q baseband signals. The I and Q baseband signals are fed to a quadrature modulator that produces the desired constellation.
摘要翻译：一种横向滤波器均衡器，包括用于高速率数字发射机的可编程发射机基带均衡器。可编程发射机基带均衡器使用+ E，fra 1/2 + EE - 符号间隔的横向滤波器处理数字数据，以产生I和Q基带信号。 + E，fra 1/2 + EE符号间隔的横向滤波器包括I和Q n位宽移位寄存器级，具有由输入数据时钟的相反相驱动的I和Q移位寄存器级的交替对，将数字到 - 由两个直接抽头权重和两个交叉抽头加权器驱动的数据转换器，以及产生I和Q基带信号的I和Q组合器。 I和Q基带信号被馈送到产生所需星座的正交调制器。

2. 发明授权

US06567477B1 Two-dimensional constellation generation, pruning, and partial gray coding for bandwidth and power efficiency 有权
标题翻译：二维星座生成，修剪和部分灰度编码的带宽和功率效率
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。

3. 发明授权

US5543811A Triangular pyramid phased array antenna 失效
标题翻译：三角锥相控阵天线
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。

4. 发明授权

US5237292A Quadrature amplitude modulation system with compensation for transmission system characteristics 失效
标题翻译：具有传输系统特性补偿的正交幅度调制系统
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.

5. 发明授权

US08774730B1 Field programmable microwave arrays 有权
标题翻译：现场可编程微波阵列
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。

6. 发明授权

US06593827B2 Modulating array transmitter autocalibration method and system 有权
标题翻译：调制阵列发射机自动校准方法和系统
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。

7. 发明授权

US06195195B1 Opto-mechanical controlled variable RF/microwave delay element and method 失效
标题翻译：光机械可控RF /微波延迟元件及方法
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。

8. 发明授权

US6144786A High bandwidth-time product continuously variable controlled delay system 失效
标题翻译：高带宽时间产品连续可变控制延时系统
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。

9. 发明授权

US06961025B1 High-gain conformal array antenna 有权
标题翻译：高增益共形阵列天线
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。

10. 发明授权

US6151481A Combiner with phase and delay correction 失效
标题翻译：具有相位和延迟校正的组合器
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。

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