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Class Information
Number: 330/4
Name: Amplifiers > With maser-type amplifying device
Description: Subject matter wherein the amplifying device combines (1) a substance having the characteristic that certain molecular, atomic, or nuclear particles thereof are capable of excitation to a higher energy level; (2) means to raise such particles to the higher energy level state; (3) means for applying an electrical signal to the amplifying device; and (4) means for securing the amplified output therefrom, whereby the aforementioned excited particles in undergoing a change from the higher to a lower energy state emit radiation which is released by the applied electrical signal, thereby to amplify it.










Patents under this class:

Patent Number Title Of Patent Date Issued
6515539 Microwave devices based on chemically induced dynamic electron spin polarization Feb. 4, 2003
H2010 Double cusp gyro gun Jan. 1, 2002
5422596 High power, broadband folded waveguide gyrotron-traveling-wave-amplifier Jun. 6, 1995
5365186 Proton maser Nov. 15, 1994
5363054 Double beam cyclotron maser Nov. 8, 1994
5291145 Microwave processing equipment Mar. 1, 1994
4863231 Active optical fibre star coupler Sep. 5, 1989
4829261 Circuitless electron beam amplifier (CEBA) May. 9, 1989
4814728 Ultra-stable superconducting cavity maser oscillator Mar. 21, 1989
4758795 Microwave pulse compression in dispersive plasmas Jul. 19, 1988
H450 Magnetic field adjustment structure and method for a tapered wiggler Mar. 1, 1988
4554510 Switching fiber optic amplifier Nov. 19, 1985
4533875 Wide-band gyrotron traveling-wave amplifier Aug. 6, 1985
4480234 Gyrotron backward wave oscillator device Oct. 30, 1984
4456912 High energy microwave defense system Jun. 26, 1984
4422045 Barnetron microwave amplifiers and oscillators Dec. 20, 1983
4399415 Resonant isolator for maser amplifier Aug. 16, 1983
4370621 High efficiency gyrotron oscillator and amplifier Jan. 25, 1983
4253068 Cyclotron maser using a spatially nonlinear electrostatic field Feb. 24, 1981
4224576 Gyrotron travelling-wave amplifier Sep. 23, 1980
4209752 Getter pump for hydrogen maser Jun. 24, 1980
4187470 Dielectric-loaded waveguide circulator for cryogenically cooled and cascaded maser waveguide structures Feb. 5, 1980
4055810 Independent gain and bandwidth control of a traveling wave maser Oct. 25, 1977
3978417 Reflected-wave maser Aug. 31, 1976











 
 
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