METHOD AND APPARATUS FOR RF INPUT COUPLING FOR INDUCTIVE OUTPUT TUBES AND OTHER EMISSION GATED DEVICES
摘要
An input circuit of a microwave amplification tube achieves improved instantaneous bandwidth. By directly coupling the transmission line carrying a modulating radio frequency signal to a control grid, a low-Q input circuit is created that increases the fractional bandwidth of the system. A resonant cavity may be used to generate a voltage across the gap between the cathode and the control grid. Alternative geometries are presented whereby the electron beam is emitted from a cathode connected either to the center conductor of the transmission line or to the outer conductor of the transmission line. Alternatively, the electric field of the radio-frequency signal propagating through the transmission line may be used to create a voltage across the gap between the cathode and the control grid without using a resonant cavity. Likewise, alternative geometries are presented by which the electron beam is emitted from a cathode connected either to the center conductor or to the outer conductor of the transmission line.
申请公布号
WO2008070503(A3)
申请公布日期
2008.08.07
申请号
WO2007US85815
申请日期
2007.11.28
申请人
L-3 COMMUNICATIONS CORPORATION;KIRSHNER, MARK FREDERICK;KOWALCZYK, RICHARD DONALD;WILSEN, CRAIG BISSET
发明人
KIRSHNER, MARK FREDERICK;KOWALCZYK, RICHARD DONALD;WILSEN, CRAIG BISSET