| |
 |
|
Class Information
Number: 330/4.5
Name: Amplifiers > Parametric amplifiers
Description: Subject matter including (1) a nonlinear reactance, (2) means for applying an input signal frequency to said nonlinear reactance, (3) means for effectively applying a pumping frequency higher than said signal frequency to said nonlinear reactance, and (4) means for abstracting the amplified output therefrom, whereby sum and difference frequencies are produced, one or both of which (but usually the difference frequency [called the idler frequency] reacting with the pumping frequency to produce energy at the signal frequency which is combined in phase with the input signal.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7990210 |
Amplifier, amplifying method, and filter |
Aug. 2, 2011 |
| 7911257 |
MOSFET parametric amplifier |
Mar. 22, 2011 |
| 7630126 |
Two-pump optical parametric devices having reduced stimulated Raman scattering noise levels |
Dec. 8, 2009 |
| 7164526 |
Parametric amplification using two pump waves |
Jan. 16, 2007 |
| 6870664 |
Nondegenerate optical parametric chirped pulse amplifier |
Mar. 22, 2005 |
| 6611168 |
Differential parametric amplifier with physically-coupled electrically-isolated micromachined structures |
Aug. 26, 2003 |
| 6281746 |
Parametric cavity microwave amplifier |
Aug. 28, 2001 |
| 6265934 |
Q-switched parametric cavity amplifier |
Jul. 24, 2001 |
| 5401953 |
Optically-switched submillimeter-wave oscillator and radiator having a switch-to-switch propagation delay |
Mar. 28, 1995 |
| 5075573 |
Low-noise optical wave amplification device |
Dec. 24, 1991 |
| 4984298 |
Wideband low noise detector |
Jan. 8, 1991 |
| 4906949 |
Monomode optical source and an optical amplifying device tuneable in the near infra red and application to selective and regeneration amplifying devices |
Mar. 6, 1990 |
| 4639923 |
Optical parametric oscillator using urea crystal |
Jan. 27, 1987 |
| 4622510 |
Parametric electric machine |
Nov. 11, 1986 |
| 4618783 |
Production of short light pulses by time compression |
Oct. 21, 1986 |
| 4604551 |
Cyclotron resonance maser system with microwave output window and coupling apparatus |
Aug. 5, 1986 |
| 4365216 |
Surface-acoustic-wave device |
Dec. 21, 1982 |
| 4325144 |
Hysteretic SIS junction mixer |
Apr. 13, 1982 |
| 4313223 |
Signal-amplification frequency-conversion apparatus having a common active component |
Jan. 26, 1982 |
| 4306195 |
Pulse compressor with saturation-matched focusing geometry |
Dec. 15, 1981 |
| 4288765 |
Frequency selector apparatus |
Sep. 8, 1981 |
| 4224577 |
Multistaged stokes injected Raman capillary waveguide amplifier |
Sep. 23, 1980 |
| 4222011 |
Stokes injected Raman capillary waveguide amplifier |
Sep. 9, 1980 |
| 4215323 |
Instability and regenerative pulsation in optical cavities |
Jul. 29, 1980 |
| 4160956 |
Nuclear-pumped uranyl salt laser |
Jul. 10, 1979 |
| 4160215 |
Single diode upper sideband terminated parametric amplifier |
Jul. 3, 1979 |
| 4128772 |
Generation of tunable far-infrared radiation |
Dec. 5, 1978 |
| 4071831 |
Amplifying characteristics of a cavity-enclosed nonlinear medium |
Jan. 31, 1978 |
| 4063105 |
Method of and apparatus for generating tunable coherent radiation by noncollinear phase-matched sum-difference frequency optical mixing |
Dec. 13, 1977 |
| 4058739 |
Method and apparatus for phase matching by adjustment of the fundamental frequencies |
Nov. 15, 1977 |
| 4056784 |
Suppression of parametric oscillations in IMPATT amplifiers and oscillators |
Nov. 1, 1977 |
| 4050027 |
Optical signal amplifier |
Sep. 20, 1977 |
| 4028637 |
Parametrically-stable negative resistance diode circuit |
Jun. 7, 1977 |
| 4012699 |
Amplifying characteristics of a cavity-enclosed nonlinear medium |
Mar. 15, 1977 |
| 4011462 |
Pulsed infrared difference frequency generation in CdGeAs.sub.2 |
Mar. 8, 1977 |
| 3992675 |
Broadband, upper sideband terminated, low-noise parametric amplifier |
Nov. 16, 1976 |
| 3934208 |
Low noise modular parametric amplifier |
Jan. 20, 1976 |
| 3931623 |
Reliable earth terminal for satellite communications |
Jan. 6, 1976 |
|
|
|
