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Class Information
Number: 330/43
Name: Amplifiers > With traveling wave-type tube
Description: Subject matter wherein the amplifying device is of the vacuum tube type including means for generating an electron stream or beam, and having additional means therein for propagating an electromagnetic wave or component thereof at a velocity reduced from the free space velocity of the wave and propagated in proximity of the electron stream or beam, permitting exchange of energy between the electrons and the electromagnetic wave.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7459855 |
Low-spurious-radiation microwave tube |
Dec. 2, 2008 |
| 7368874 |
Dynamic depressed collector |
May. 6, 2008 |
| 7358803 |
Broadband high efficiency traveling wave tube amplifier system |
Apr. 15, 2008 |
| 7315206 |
Travelling-wave amplifier |
Jan. 1, 2008 |
| 7230480 |
Estimating the operating point on a non-linear traveling wave tube amplifier |
Jun. 12, 2007 |
| 7190108 |
Methods and apparatus using pulsed and phased currents in parallel plates, including embodiments for electrical propulsion |
Mar. 13, 2007 |
| 7142052 |
Travelling wave amplifiers |
Nov. 28, 2006 |
| 7138860 |
System and method for envelope modulation |
Nov. 21, 2006 |
| 7071624 |
Microwave tube system and microwave tube |
Jul. 4, 2006 |
| 6791408 |
System and method for noise and spurious suppression in power amplifier systems |
Sep. 14, 2004 |
| 6781454 |
Linearized traveling wave tube circuit with pre-distortion linearizer |
Aug. 24, 2004 |
| 6734734 |
Amplifier phase droop and phase noise systems and methods |
May. 11, 2004 |
| 6611719 |
Cancer thermotherapy |
Aug. 26, 2003 |
| 6590450 |
System and method for linearizing vacuum electronic amplification |
Jul. 8, 2003 |
| 6586883 |
Method and apparatus for detecting individual TWT helix current for multiple TWT loads |
Jul. 1, 2003 |
| 6555964 |
Device, notably for controlling a travelling-wave tube |
Apr. 29, 2003 |
| 6498532 |
System and method for linearizing vacuum electronic amplification |
Dec. 24, 2002 |
| 6489842 |
Multiple traveling wave tube amplifier electronic power conditioner with centralized low voltage and distributed high voltage |
Dec. 3, 2002 |
| 6486604 |
Traveling-wave valve arrangement |
Nov. 26, 2002 |
| 6462474 |
Grooved multi-stage depressed collector for secondary electron suppression |
Oct. 8, 2002 |
| 6459337 |
System and method for noise and spurious suppression in power amplifier systems |
Oct. 1, 2002 |
| 6369511 |
Travelling-wave tube amplifier |
Apr. 9, 2002 |
| 6369648 |
Linear traveling wave tube amplifier utilizing input drive limiter for optimization |
Apr. 9, 2002 |
| 6360084 |
Dual-band RF power tube with shared collector and associated method |
Mar. 19, 2002 |
| 6353525 |
Arrangement in a power unit for a grid-pulsed, O-type microwave tube |
Mar. 5, 2002 |
| 6346853 |
Predistortion linearizer circuit |
Feb. 12, 2002 |
| 6177836 |
Feed forward linearized traveling wave tube |
Jan. 23, 2001 |
| 6049249 |
TWT with mismatched section for controlled gain variation with frequency |
Apr. 11, 2000 |
| 5940025 |
Noise cancellation method and apparatus |
Aug. 17, 1999 |
| 5862462 |
Power enhancement techniques for high power satellites |
Jan. 19, 1999 |
| 5838195 |
Reduction of second order harmonic distortion in high power TWT amplifiers |
Nov. 17, 1998 |
| 5834971 |
RF amplifier including traveling wave tube with sequential stages |
Nov. 10, 1998 |
| 5789978 |
Ku-band linearizer bridge |
Aug. 4, 1998 |
| 5773933 |
Broadband traveling wave amplifier with an input stripline cathode and an output stripline anode |
Jun. 30, 1998 |
| 5649310 |
Signal translation and amplification system including a thermal radiation panel coupled thereto |
Jul. 15, 1997 |
| 5604402 |
Harmonic gyro traveling wave tube having a multipole field exciting circuit |
Feb. 18, 1997 |
| 5568014 |
Traveling-wave tube amplifier having collector potential lower than body potential |
Oct. 22, 1996 |
| 5500621 |
Travelling-wave tube protection arrangement |
Mar. 19, 1996 |
| 5402085 |
Process and device for compensation of phase instabilities of the wave amplified by a microwave tube |
Mar. 28, 1995 |
| 5291146 |
Transverse traveling wave amplifier |
Mar. 1, 1994 |
| 5227701 |
Gigatron microwave amplifier |
Jul. 13, 1993 |
| 5125417 |
Phase conjugate reflection from plasma |
Jun. 30, 1992 |
| 5124664 |
Field emission devices |
Jun. 23, 1992 |
| 5103187 |
Microwave tube amplifier stage with wide band and low dispersivity in frequency |
Apr. 7, 1992 |
| 5038076 |
Slow wave delay line structure having support rods coated by a dielectric material to prevent rod charging |
Aug. 6, 1991 |
| 4967162 |
Stripline traveling wave device and method |
Oct. 30, 1990 |
| 4931694 |
Coupled cavity circuit with increased iris resonant frequency |
Jun. 5, 1990 |
| 4928070 |
Low-noise crossed-field amplifier |
May. 22, 1990 |
| 4897609 |
Axially coupled gyrotron and gyro TWTA |
Jan. 30, 1990 |
| 4878030 |
Linearizer for microwave amplifier |
Oct. 31, 1989 |
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