公开(公告)号：US2554132A

公开(公告)日：1951-05-22

申请号：US68407146

申请日：1946-07-16

申请人： HARTFORD NAT BANK & TRUST CO

发明人： ZELST JOHANNES JACOBUS ZAALBER

IPC分类号： B60D1/00 ,  H03F1/06 ,  H03F1/08 ,  H03F1/54 ,  H03F3/40 ,  H03F3/66 ,  H03G3/22

CPC分类号： B60D1/00 ,  H03F1/06 ,  H03F1/08 ,  H03F1/54 ,  H03F3/40 ,  H03F3/66 ,  H03G3/22

公开(公告)号：US2538535A

公开(公告)日：1951-01-16

申请号：US75760947

申请日：1947-06-27

申请人： RCA CORP

发明人： HENRY PRICE THOMAS

IPC分类号： H03C1/50 ,  H03F1/06

CPC分类号： H03C1/50 ,  H03F1/06

公开(公告)号：US2498711A

公开(公告)日：1950-02-28

申请号：US58605545

申请日：1945-04-02

申请人： STANDARD TELEPHONES CABLES LTD

发明人： TAYLOR ROYDEN GEORGE

IPC分类号： H03F1/04 ,  H03F1/06

CPC分类号： H03F1/06 ,  H03F1/04

公开(公告)号：US2381181A

公开(公告)日：1945-08-07

申请号：US48182243

申请日：1943-04-05

申请人： RCA CORP

发明人： HENRY PRICE THOMAS

IPC分类号： H03F1/06

CPC分类号： H03F1/06

公开(公告)号：US2318948A

公开(公告)日：1943-05-11

申请号：US36658340

申请日：1940-11-22

申请人： RCA CORP

发明人： KOCH WINFIELD R

IPC分类号： H03F1/06 ,  H04B1/16

CPC分类号： H04B1/1623 ,  H03F1/06

公开(公告)号：US2252049A

公开(公告)日：1941-08-12

申请号：US27340439

申请日：1939-05-13

申请人： INT STANDARD ELECTRIC CORP

发明人： TERMAN FREDERICK E

IPC分类号： H03C1/06 ,  H03F1/06 ,  H03F3/02

CPC分类号： H03F1/06 ,  H03C1/06 ,  H03F3/02

公开(公告)号：US2211040A

公开(公告)日：1940-08-13

申请号：US29531139

申请日：1939-09-16

申请人： COLLINS RADIO CO

发明人： WIRKLER WALTER H

IPC分类号： H03C1/52 ,  H03F1/06

CPC分类号： H03F1/06 ,  H03C1/52

公开(公告)号：US12051998B2

公开(公告)日：2024-07-30

申请号：US17726667

申请日：2022-04-22

申请人： SUMITOMO ELECTRIC INDUSTRIES, LTD.

发明人： Tatsuya Hashinaga

IPC分类号： H03F1/06 ,  H03F1/14 ,  H03F1/30 ,  H03F1/56 ,  H03F3/195 ,  H03F3/54

CPC分类号： H03F1/06 ,  H03F1/14 ,  H03F1/30 ,  H03F1/565 ,  H03F3/195 ,  H03F3/54

摘要： An amplifier circuit includes a first amplifier that amplifies a high frequency signal, and a load circuit that changes a load impedance of the first amplifier without being controlled by an external circuit so that a saturation power at a first temperature is higher than a saturation power at a second temperature lower than the first temperature, and an efficiency at the first temperature is lower than an efficiency at the second temperature.

公开(公告)号：US20240186957A1

公开(公告)日：2024-06-06

申请号：US18523766

申请日：2023-11-29

申请人： THALES

发明人： Eric PEQUET ,  Xavier LISMONDE ,  Philippe FAYT

IPC分类号： H03F1/06 ,  H03F3/189

CPC分类号： H03F1/06 ,  H03F3/189 ,  H03F2200/451

摘要： A satellite system includes a radio frequency signal amplifier device comprising a control and supply module and a plurality of travelling wave tubes. The module is configured to apply to at least one of the tubes an anode voltage operating value, generating a cathode current in response. The module is moreover configured to measure at least one sum of the cathode currents that is associated with the plurality of tubes, the at least one measurement of the sum of the cathode currents being implemented on the basis of a single measuring circuit, and to determine at least one corrected anode voltage operating value, associated with the at least one of the tubes, on the basis of the at least one measurement of the sum of the cathode currents.

公开(公告)号：US20200036334A1

公开(公告)日：2020-01-30

申请号：US16521929

申请日：2019-07-25

申请人： Rohde & Schwarz GmbH & Co. KG

发明人： Thomas Witt ,  Florian Ohnimus ,  Uwe Dalisda ,  Wolfram Titze ,  Andreas Andrei ,  Raimon Göritz

IPC分类号： H03F1/02 ,  H03F3/21 ,  H03F3/22 ,  H03F1/06 ,  G01R31/00

摘要： The invention relates to a broadband high power amplifier that comprises a signal input adapted to receive an input signal, at least one amplifier stage adapted to amplify the received input signal, a signal output adapted to output the signal amplified by the at least one amplifier stage as an output signal, a monitoring unit adapted to monitor signal characteristics of the input signal and the output signal and a control unit adapted to operate the at least one amplifier stage at an optimal operating point depending on the current signal characteristics monitored by said monitoring unit.