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1. 发明授权

US4588958A Adjustable reflective predistortion circuit 失效
标题翻译：可调反射预失真电路
公开(公告)号：US4588958A
公开(公告)日：1986-05-13
申请号：US717877
申请日：1985-03-29
申请人： Allen Katz , Rajagopalan Sudarsanam , Donald E. Aubert
发明人： Allen Katz , Rajagopalan Sudarsanam , Donald E. Aubert
IPC分类号： H03F1/32 , H03G7/00
CPC分类号： H03F1/3276 , H03G7/00
摘要： A predistortion circuit of the reflective type uses antiparallel-connected diodes for the desired amplitude and phase nonlinearity. If the signal applied to the diodes is of not of the correct magnitude, the desired nonlinearity will not be obtained. The magnitude of the signal applied to the diodes is increased or decreased as required by an impedance transforming circuit. The impedance transforming circuit is tuned for the frequencies of interest. The overall distortion is reduced by applying a direct bias to the diode pair.
摘要翻译：反射型的预失真电路使用反并联连接的二极管达到所需的幅度和相位非线性。如果施加到二极管的信号的幅度不正确，则不能获得所需的非线性。施加到二极管的信号的大小根据阻抗变换电路的要求而增加或减小。针对感兴趣的频率调整阻抗变换电路。通过向二极管对施加直接偏置来减小整体失真。

2. 发明申请

US20090213022A1 HORN ANTENNA, WAVEGUIDE OR APPARATUS INCLUDING LOW INDEX DIELECTRIC MATERIAL 有权
标题翻译：天线，波导或装置，包括低折射率电介质材料
公开(公告)号：US20090213022A1
公开(公告)日：2009-08-27
申请号：US12037013
申请日：2008-02-25
申请人： Erik LIER , Allen Katz
发明人： Erik LIER , Allen Katz
IPC分类号： H01Q13/02
CPC分类号： H01Q13/02 , H01P3/12 , H01Q15/0086
摘要： A horn antenna includes a conducting horn having an inner wall and a first dielectric layer lining substantially the entire inner wall of the conducting horn. The first dielectric layer includes a metamaterial having a dielectric constant of greater than 0 and less than 1. The horn antenna may further include a dielectric core abutting at least a portion of the first dielectric layer. In one aspect, the dielectric core includes a fluid. A waveguide and a power combiner assembly, each including a metamaterial, are also disclosed.
摘要翻译：喇叭天线包括具有内壁的导电喇叭和基本上在导电喇叭的整个内壁上衬垫的第一电介质层。第一介电层包括具有大于0且小于1的介电常数的超材料。喇叭天线还可以包括邻接第一电介质层的至少一部分的电介质芯。在一个方面，电介质芯包括流体。还公开了各自包括超材料的波导和功率组合器组件。

3. 发明授权

US5162748A Switchable FET distortion generator 失效
标题翻译：可切换FET失真发生器
公开(公告)号：US5162748A
公开(公告)日：1992-11-10
申请号：US799659
申请日：1991-11-29
申请人： Allen Katz
发明人： Allen Katz
IPC分类号： H03F1/32
CPC分类号： H03F1/3241 , H03F2200/372 , H03F2200/72
摘要： A communications system includes a transmission channel in which, for efficiency, a processor such as an amplifier is operated in a nonlinear mode. When the signal is modulated in a manner which is affected by the nonlinearity of the processor, such as a multicarrier modulation, a distortion linearizer is used. The distortion linearizer incluees the source-to-drain conductive channel of a FET. The gate of the FET is coupled to ground by an impedance which may be a low inductance, and the gate is biased relative to the channel, possibly near pinchoff, to cause the channel to exhibit desirable gain expansion and phase shifts in response to signal input level, which are selected to compensate the distortion of the nonlinear processor. When the signal is modulated in a manner which is not significantly affected by the nonlinearity of the processor, as for example frequency modulation, the distortion linearizer is switched to a linear or ON mode, in which the amplitude and phase are invariant with signal level. The switching is accomplished by adjusting the gate-to-channel voltage.
摘要翻译：通信系统包括传输信道，其中为了效率，诸如放大器的处理器以非线性模式操作。当以受处理器非线性影响的方式（如多载波调制）调制信号时，使用失真线性化。失真线性化电路暴露了FET的源极到漏极导电沟道。 FET的栅极通过可能是低电感的阻抗耦合到地，并且栅极相对于沟道偏置，可能接近于尖峰，使得沟道响应于信号输入而呈现期望的增益扩展和相移电平，被选择以补偿非线性处理器的失真。当以不受处理器的非线性的显着影响的方式（例如频率调制）来调制信号时，失真线性化器被切换到线性或ON模式，其中幅度和相位与信号电平不变。通过调整栅极到沟道电压来实现开关。

4. 发明授权

US5500621A Travelling-wave tube protection arrangement 失效
标题翻译：行波管保护装置
公开(公告)号：US5500621A
公开(公告)日：1996-03-19
申请号：US416111
申请日：1995-04-03
申请人： Allen Katz , Herbert J. Wolkstein , James J. Meighan, III
发明人： Allen Katz , Herbert J. Wolkstein , James J. Meighan, III
IPC分类号： H01J25/38 , H03F1/54 , H03F3/58
CPC分类号： H01J25/38 , H01J23/34 , H03F1/54 , H03F3/58
摘要： A travelling-wave tube (TWT) for a satellite communication system includes a cathode current regulator which compares a sensed I.sub.K signal with a cathode current reference to form an cathode current error signal, and controls the cathode current in response to the cathode current error signal. Helix arc protection is provided by a helix current shut-down, which compares the helix current with a particular reference, and shuts the TWT supply down when helix current flows. Desirable high efficiency TWTs have a small input drive range between maximum TWT output and a defocussed condition, in which beam current flows in the helix. Sudden changes in path attenuation may result in an RF overdrive condition, and cause helix current flow, and undesirably shut down the TWT. A helix current limiter senses the helix current, and compares it with a reference which represents less helix current than that which causes shutdown, to produce a helix current error signal. The helix current error signal adjusts the cathode current reference, to thereby reduce the cathode current in a feedback manner, to thereby tend to maintain the helix current constant at a value below the shut-down helix current.
摘要翻译：用于卫星通信系统的行波管（TWT）包括阴极电流调节器，其将感测到的IK信号与阴极电流参考值进行比较以形成阴极电流误差信号，并响应于阴极电流误差信号来控制阴极电流。螺旋电弧保护由螺旋电流关闭提供，其将螺旋电流与特定参考值进行比较，并在螺旋电流流动时关闭TWT电源。期望的高效率TWT在最大TWT输出和散焦条件之间具有小的输入驱动范围，其中束电流在螺旋中流动。路径衰减的突然变化可能导致RF过驱动条件，并导致螺旋电流流动，并且不期望地关闭TWT。螺旋电流限制器检测螺旋电流，并将其与参考相比较，该参考表示比引起关闭的螺旋电流更少的螺旋电流，以产生螺旋电流误差信号。螺旋电流误差信号调节阴极电流参考，从而以反馈方式减小阴极电流，从而倾向于将螺旋电流恒定在低于停机螺旋电流的值。

5. 发明授权

US5191338A Wideband transmission-mode FET linearizer 失效
标题翻译：宽带传输模式FET线性化
公开(公告)号：US5191338A
公开(公告)日：1993-03-02
申请号：US800375
申请日：1991-11-29
申请人： Allen Katz , Shabbir S. Moochalla
发明人： Allen Katz , Shabbir S. Moochalla
IPC分类号： H03H11/18 , H03F1/32 , H03F3/60 , H03G1/00 , H03G3/20 , H04B7/15
CPC分类号： H03G3/3036 , H03F1/3241 , H03F3/601 , H03G1/0029 , H03F2200/372 , H03F2200/72
摘要： A FET is operated without source-to-drain bias, with the source-to-drain conductive path coupled in series with a transmission line. A gate-to-ground impedance is selected in conjunction with a gate voltage near pinchoff to impress nonlinear distortion or gain and/or phase of signals traversing the source-to-drain conductive path. The nonlinear distortion can compensate for the amplitude distortion of a following amplifier, but the phase distortion may not be suitable for correcting that of the following amplifier. An inductor is bridged from source to drain, and corrects the phase without excessive effect on the amplitude. The magnitude of the inductor may be adjusted to minimize nonlinear amplitude change without affecting the phase change, whereupon the phase change may be made independent of amplitude change. A resistor in series with the bridging inductor can be selected to render amplitude change independent of phase change. Two such independent amplitude and phase correctors may be cascaded.
摘要翻译：在没有源极到漏极偏置的情况下操作FET，其中源极 - 漏极导电路径与传输线串联耦合。栅极对地阻抗被选择在靠近pinchoff处的栅极电压，以施加穿过源极 - 漏极导电路径的信号的非线性失真或增益和/或相位。非线性失真可以补偿后续放大器的幅度失真，但是相位失真可能不适用于校正后续放大器的失真。电感从源极到漏极桥接，并校正相位，而不会对幅度产生过大的影响。可以调节电感器的幅度以使非线性幅度变化最小化，而不影响相位变化，因此相位变化可以独立于振幅变化。可以选择与桥接电感器串联的电阻器，以使幅度变化与相变无关。两个这样独立的振幅和相位校正器可以级联。

6. 发明授权

US08072386B2 Horn antenna, waveguide or apparatus including low index dielectric material 有权
标题翻译：喇叭天线，波导或包括低折射率介电材料的设备
公开(公告)号：US08072386B2
公开(公告)日：2011-12-06
申请号：US12245497
申请日：2008-10-03
申请人： Erik Lier , Allen Katz
发明人： Erik Lier , Allen Katz
IPC分类号： H01Q13/00
CPC分类号： H01Q13/02
摘要： A horn antenna includes a conducting horn having an inner wall and a first dielectric layer lining the inner wall of the conducting horn. The first dielectric layer includes a metamaterial having a relative dielectric constant of greater than 0 and less than 1. The horn antenna may further include a dielectric core abutting at least a portion of the first dielectric layer. In one aspect, the dielectric core includes a fluid. A waveguide including a metamaterial is also disclosed.
摘要翻译：喇叭天线包括导电喇叭，其具有内壁和衬在导电喇叭的内壁上的第一电介质层。第一介电层包括具有大于0且小于1的相对介电常数的超材料。喇叭天线还可以包括邻接第一电介质层的至少一部分的电介质芯。在一个方面，电介质芯包括流体。还公开了包括超材料的波导。

7. 发明授权

US07030824B1 MEMS reflectarray antenna for satellite applications 失效
标题翻译：用于卫星应用的MEMS反射天线
公开(公告)号：US07030824B1
公开(公告)日：2006-04-18
申请号：US10448265
申请日：2003-05-29
申请人： William Joseph Taft , Allen Katz , George Arthur Silverman , Wing Joseph SooHoo , Anthony Jacomb-Hood , Gerard Joseph Matyas
发明人： William Joseph Taft , Allen Katz , George Arthur Silverman , Wing Joseph SooHoo , Anthony Jacomb-Hood , Gerard Joseph Matyas
IPC分类号： H01Q13/10 , H01Q3/22
CPC分类号： H01Q3/46 , H01L2223/6611 , H01L2223/6677 , H01L2224/48227 , H01L2224/73267 , H01L2924/15153 , H01L2924/15192 , H01L2924/15321 , H01L2924/16195
摘要： Methods and apparatus provide vibration-free steered-beam antennas using a module to accommodate segregated de and rf signals. A phase-shifter element is disposed within an interior of the module. A radiating element is provided, and an rf interface is adapted to couple energy between the phase-shifter element and the radiating element. The rf interface is disposed entirely within the interior of the module and is adapted to provide an rf interface with the module substantially only through the radiating element. A dc interface is adapted to couple energy between the phase-shifter element and an electrical connection element disposed exterior to the module.
摘要翻译：方法和装置使用模块提供无振动的转向束天线，以适应隔离的de和rf信号。移相器元件设置在模块的内部。提供辐射元件，并且rf接口适于在移相器元件和辐射元件之间耦合能量。射频接口完全设置在模块的内部，并且适于基本上仅通过辐射元件提供与模块的射频接口。直流接口适于在移相器元件和设置在模块外部的电连接元件之间耦合能量。

8. 发明授权

US5990750A Amplifier and driver system with multichannel operation 失效
标题翻译：具有多通道运算的放大器和驱动器系统
公开(公告)号：US5990750A
公开(公告)日：1999-11-23
申请号：US39907
申请日：1998-03-16
申请人： Allen Katz
发明人： Allen Katz
IPC分类号： H03F1/32 , H03F3/68 , H02H7/20 , H03F3/04
CPC分类号： H03F1/3241
摘要： An RF amplifier includes a FET output stage and a driver. The FET is subject to long-term degradation in multiple-carrier use if its average gate current often exceeds a predetermined value. The random superposition of signal peaks of the multicarrier signal may cause such peaks to occur. The driver stage is selected to provide a range of four dB or less between the single-signal 1 dB compression point and the hard compression point, as measured by driver input signal level. This prevents application of excessive input signal to the output stage in a multicarrier situation, and prevents degradation of the FETs of the output stage. In one embodiment, a predistortion equalizer or linearizer is placed before the driver stage, to tend to linearize the characteristic of the driver and output stage combination at signal levels below those at which the driver is limited.
摘要翻译： RF放大器包括FET输出级和驱动器。如果平均栅极电流通常超过预定值，则FET在多载波使用中会长期恶化。多载波信号的信号峰值的随机叠加可能导致发生这种峰值。选择驱动级，以提供单信号1 dB压缩点和硬压缩点之间的4 dB或更小的范围，由驱动器输入信号电平测量。这防止了在多载波情况下向输出级施加过大的输入信号，并且防止了输出级的FET的劣化。在一个实施例中，将预失真均衡器或线性化器放置在驱动器级之前，倾向于将信号电平的信号电平低于驱动器受限的信号线性化，使驱动器和输出级组合的特性线性化。

9. 发明授权

US5015965A Predistortion equalizer with resistive combiners and dividers 失效
标题翻译：具有电阻组合器和分频器的预失真均衡器
公开(公告)号：US5015965A
公开(公告)日：1991-05-14
申请号：US440580
申请日：1989-11-22
申请人： Allen Katz , Robert R. Urban
发明人： Allen Katz , Robert R. Urban
IPC分类号： H01P1/00 , H03F1/32 , H03H11/04 , H04B1/10
CPC分类号： H03F1/3241
摘要： A predistortion equalizer for a power amplifier includes a linear channel and a nonlinear channel. A phase shifter is associated with the linear channel and an attenuator is associated with the nonlinear channel. A resistive power divider divides the received signal which is to be predistorted and divides it into two parts, each of which is applied to one of the channels. The two parts may be equal in magnitude. The linear and nonlinear signals at the outputs of the linear and nonlinear channels, respectively, are combined out-of-phase in a resistive combiner to produce a predistorted signal for appication to a power amplifier. The resistive combiner and divider maximize bandwidth.
摘要翻译：用于功率放大器的预失真均衡器包括线性通道和非线性通道。移相器与线性通道相关联，衰减器与非线性通道相关联。电阻功率分配器将要被预失真的接收信号分开，并将其分为两部分，每个部分应用于一个通道。这两个部分的大小可能相等。分别在线性和非线性通道的输出处的线性和非线性信号在电阻组合器中不同相组合，以产生用于应用于功率放大器的预失真信号。电阻组合器和分压器最大化带宽。

10. 发明授权

US08102940B1 Receive frequency band interference protection system using predistortion linearization 有权
标题翻译：接收使用预失真线性化的频段干扰保护系统
公开(公告)号：US08102940B1
公开(公告)日：2012-01-24
申请号：US11826494
申请日：2007-07-16
申请人： Allen Katz , Donald P. Farrell , James L. Martinetti
发明人： Allen Katz , Donald P. Farrell , James L. Martinetti
IPC分类号： H04K1/02
CPC分类号： H04B1/0475 , H03F1/3241 , H03F2200/451 , H03F2201/3236
摘要： A receive frequency band interference protection system includes an input terminal for receiving an input signal and a dividing coupler coupled to the input terminal. The dividing coupler is configured to divide the input signal into a first signal and a second signal. The system further includes a first signal path and a second signal path. The first signal path includes a delay, and it is coupled to the dividing coupler and configured to receive the first signal. The second signal path is coupled to the dividing coupler and configured to receive the second signal. The second signal path includes an attenuator coupled to the dividing coupler and a predistortion linearizer coupled to the attenuator. The system further includes a combining coupler and an output terminal. The combining coupler is coupled to the first signal path and the second signal path. The combining coupler is configured to obtain a sum of the respective outputs of the first signal path and the second signal path. The output terminal is coupled to the combining coupler and configured to send out the sum.
摘要翻译：接收频带干扰保护系统包括用于接收输入信号的输入端和耦合到输入端的分频耦合器。分配耦合器被配置为将输入信号划分为第一信号和第二信号。该系统还包括第一信号路径和第二信号路径。第一信号路径包括延迟，并且其耦合到分路耦合器并且被配置为接收第一信号。第二信号路径被耦合到分离耦合器并且被配置为接收第二信号。第二信号路径包括耦合到分路耦合器的衰减器和耦合到衰减器的预失真线性化电路。该系统还包括组合耦合器和输出端子。组合耦合器耦合到第一信号路径和第二信号路径。组合耦合器被配置为获得第一信号路径和第二信号路径的相应输出的和。输出端耦合到组合耦合器并被配置为发出总和。

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