公开(公告)号：US08237504B1

公开(公告)日：2012-08-07

申请号：US12699103

申请日：2010-02-03

申请人： Shabbir S. Moochalla ,  William J. Taft ,  Johan Ramirez

发明人： Shabbir S. Moochalla ,  William J. Taft ,  Johan Ramirez

IPC分类号： H03G3/10

CPC分类号： H03F1/0261 ,  H03F1/3205 ,  H03F3/195 ,  H03F3/245 ,  H03F3/68 ,  H03F2200/15 ,  H03F2200/18 ,  H03F2200/405 ,  H03F2200/411 ,  H03G3/3042

摘要： A method of fabricating a solid state power amplifier (SSPA) having variable output power is provided. The method includes coupling a first transistor device to a second transistor device and biasing a drain input of each of the first and second transistor device. Further, the method includes biasing a gate input of each of the first and second transistor device varying a drain to source current of each of the first and second transistor device to enable the SSPA to maintain high power added efficiency (PAE) and consistent linearity over a range of output power levels.

摘要翻译： 提供一种制造具有可变输出功率的固态功率放大器（SSPA）的方法。 该方法包括将第一晶体管器件耦合到第二晶体管器件并且偏置第一和第二晶体管器件中的每一个的漏极输入。 此外，该方法包括偏置第一和第二晶体管器件中的每一个的栅极输入，改变第一和第二晶体管器件中的每一个的漏极 - 源极电流，以使得SSPA能够保持高的功率附加效率（PAE）和一致的线性度 输出功率范围的范围。

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。

公开(公告)号：US5146177A

公开(公告)日：1992-09-08

申请号：US753164

申请日：1991-08-30

申请人： Allen Katz ,  Shabbir S. Moochalla

发明人： Allen Katz ,  Shabbir S. Moochalla

IPC分类号： H03F1/32 ,  H03F3/60

CPC分类号： H03F3/608 ,  H03F2200/198

摘要： A nonlinear processor for use as a signal limiter or predistortion equalizer includes a four-port, 3dB directional coupler. Signal to be distorted is applied to a first port of the coupler, and is coupled by second and third ports to a pair of nonlinear circuits. Each nonlinear circuit includes the source-to-drain transmission path of a FET. Each nonlinear circuit is grounded or short-circuited, to form a nonlinear reflective circuit which reflects the energy back to the associated port of the coupler. The nonlinearly reflected energy is received at the two coupler ports, and is combined and made available at the fourth coupler port. The input return loss of the processor is improved by matching the nonlinear circuits to each other.

摘要翻译： 用作信号限幅器或预失真均衡器的非线性处理器包括四端口，3dB定向耦合器。 要失真的信号被施加到耦合器的第一端口，并且由第二和第三端口耦合到一对非线性电路。 每个非线性电路包括FET的源极到漏极传输路径。 每个非线性电路接地或短路，形成一个非线性反射电路，将电能反射回耦合器的相关端口。 在两个耦合器端口处接收非线性反射能量，并且在第四耦合器端口处组合并使其可用。 通过将非线性电路彼此匹配来提高处理器的输入回波损耗。

公开(公告)号：US5038113A

公开(公告)日：1991-08-06

申请号：US443681

申请日：1989-12-01

申请人： Allen Katz ,  Shabbir S. Moochalla

发明人： Allen Katz ,  Shabbir S. Moochalla

IPC分类号： H01P1/00 ,  H03F1/32 ,  H03G1/00 ,  H03H11/04 ,  H04B1/10 ,  H04B1/62 ,  H04B3/06

CPC分类号： H03F1/3252 ,  H03F1/3276 ,  H03G1/0029 ,  H04B1/62 ,  H04B3/06 ,  H03F2200/198

摘要： A distortion generator uses the source-to-drain conductive path of a FET as the nonlinear element, in either a reflective or transmissive mode. In the reflective mode, the signal is applied across the source-to-drain conductive path, and in the transmissive mode the source-to-drain conductive path is in series with the transmission path. The FET may be biased, and the gate impedance to reference potential aids in selecting the nonlinearity characteristic. Reflective embodiments of a predistortion equalizer include a circulator version and a 3 dB hybrid splitter version. Transmissive embodiments include a direct series embodiment, and another with a 3 dB splitter and a separator combiner. Limiter and log-amp uses are described.

摘要翻译： 失真发生器以反射或透射模式使用FET的源极到漏极导电路径作为非线性元件。 在反射模式中，信号施加在源极到漏极导电路径之间，并且在透射模式中，源极 - 漏极导电路径与传输路径串联。 FET可能被偏置，并且对参考电位的栅极阻抗有助于选择非线性特性。 预失真均衡器的反射实施例包括环行器版本和3dB混合分配器版本。 透射实施例包括直接串联实施例，另一个具有3dB分离器和分离器组合器。 描述了限制器和对数放大器的使用。