公开(公告)号：US4691173A

公开(公告)日：1987-09-01

申请号：US945250

申请日：1986-12-22

申请人： Larry R. Mollett ,  Robert W. Goczalk

发明人： Larry R. Mollett ,  Robert W. Goczalk

IPC分类号： H03F3/58 ,  H03G3/20 ,  H03F7/00

CPC分类号： H03G3/22 ,  H03F3/58

摘要： A system for optimizing the RF input drive to a TWT amplifier over a frequency band of interest is disclosed. The system includes a microprocessor-based controller, an RF detector for detecting the TWT output, and a variable attenuator for adjusting the input drive to the TWT. The controller comprises an analog-to-digital converter for converting the video detector signals and providing digital RF level signals which are representative of the TWT output power level. Frequency data is also provided to the controller indicating the frequency of the RF exciter signals driving the TWT. The controller is, therefore, provided with frequency and RF level information, and is adapted to control the attenuator to adjust the TWT input drive for optimum TWT output. The system is operable in a calibration mode wherein the controller follows a calibration algorithm to determine the optimum attenuator setting, resulting in the maximum RF output, for each frequency of interest. The optimum attenuator setting is stored in an EEPROM for each drive frequency. The system is further operable in a normal mode wherein the controller sets the attenuator at the predetermined optimum setting for the present exciter frequency.

摘要翻译： 公开了一种用于在感兴趣的频带上优化到TWT放大器的RF输入驱动的系统。 该系统包括基于微处理器的控制器，用于检测TWT输出的RF检测器，以及用于调整TWT的输入驱动的可变衰减器。 控制器包括用于转换视频检测器信号并提供表示TWT输出功率电平的数字RF电平信号的模数转换器。 还向控制器提供频率数据，指示驱动TWT的RF激励器信号的频率。 因此，控制器具有频率和RF电平信息，并且适于控制衰减器来调整TWT输入驱动以获得最佳的TWT输出。 该系统在校准模式下可操作，其中控制器遵循校准算法以确定针对感兴趣的每个频率的最佳衰减器设置，从而产生最大RF输出。 对于每个驱动频率，最佳衰减器设置存储在EEPROM中。 该系统在正常模式下可进一步操作，其中控制器将衰减器设置在当前激励器频率的预定最佳设置。