公开(公告)号：JP2000114885A

公开(公告)日：2000-04-21

申请号：JP23329199

申请日：1999-08-19

Applicant: HARRIS CORP

Inventor： BORODULIN DMITRYI ,  POGGI PETER ,  HU ZHIQUN ,  CABERA GEORGE ,  DITTMER TIMOTHY ,  ROBERSTON BRYCE

IPC: G05B23/02 ,  H03F1/52 ,  H03F3/60 ,  H03G3/30

Abstract: PROBLEM TO BE SOLVED: To obtain a power amplifier with a monitoring device monitoring and protecting a system by providing a signal modulating means modulating the gain of an inputted signal and a monitor controlling means impressing a gain control signal to the signal modulating means. SOLUTION: Concerning a signal from power amplifiers PA-1 to PA-N, N inputted signal to be composed by a signal composer CB is impressed to a vector modulator 16 in a case when an RF switch 20 is on (closed), in order to provide an output signal impressed to a load L. A microcontroller MC controls the vector modulator for varying the phase and gain of an RF signal. In addition, the microcontroller MC monitors the operation of an amplifier system, varies the phase or gain of the RF signal and controls the operation of the switch 20 and a DC switch 40 to control the system. The signal modulating means varies the gain of the inputted signal and the monitor control means impresses the gain control signal to the signal modulating means in order to control the gain of the inputted signal.

公开(公告)号：JP2000097979A

公开(公告)日：2000-04-07

申请号：JP23312599

申请日：1999-08-19

Applicant: HARRIS CORP

Inventor： BORODULIN DMITRYI

IPC: G01R29/08 ,  G01R19/02 ,  H03G3/30

Abstract: PROBLEM TO BE SOLVED: To display a mean value of frequency signals by coupling both outputs of signal converters of different responding time constants by a differential circuit, and providing a feedback circuit between the differential circuit and the one signal converter. SOLUTION: Frequency signals are received by first and second signal converters having different responding time constants corresponding to applied frequency signals, and outputs of both the converters are supplied to a differential circuit. A feedback circuit is coupled between an output of the differential circuit and one of the converters. Thus, when the signal is increased by the output of the other converter, the output of the differential circuit follows an increased signal. When the signal is decreased by the output of the other converter, the output of the differential circuit follows the signal output of the one converter coupled with the feedback circuit. Thus, an RMS value display circuit of the economical frequency signal is obtained.

公开(公告)号：DE69942992D1

公开(公告)日：2011-01-13

申请号：DE69942992

申请日：1999-08-19

Applicant: HARRIS CORP

Inventor： BORODULIN DMITRYI ,  POGGI PETER ,  HU ZHIQUN ,  CABRERA GEORGE ,  DITTMER TIMOTHY ,  ROBERSTON BRYCE

IPC: G05B23/02 ,  H03F1/52 ,  H03F3/60 ,  H03F3/72 ,  H03G3/20 ,  H03G3/30