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Class Information
Number: 330/61A
Name: Amplifiers > With resistive-type amplifying device > Negative resistance amplifiers
Description:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 6985053 |
Negative resistance circuit |
Jan. 10, 2006 |
| 6870447 |
Tuning circuit |
Mar. 22, 2005 |
| 6573788 |
Amplifier device with frequency-response-compensating amplifier reactance, and use of the amplifier device |
Jun. 3, 2003 |
| 6414551 |
Multi-space structure amplifier |
Jul. 2, 2002 |
| 5920231 |
Negative differential resistance amplifier |
Jul. 6, 1999 |
| 4409557 |
Bandpass filter with an active element |
Oct. 11, 1983 |
| 4338582 |
Electronically tunable resonator circuit |
Jul. 6, 1982 |
| 4175257 |
Modular microwave power combiner |
Nov. 20, 1979 |
| 4090155 |
Transmission line for electromagnetic wave |
May. 16, 1978 |
| 4063186 |
Broadband millimeter wave amplifier |
Dec. 13, 1977 |
| 4050032 |
Avalanche diode amplifier |
Sep. 20, 1977 |
| 4025872 |
Negative resistance network |
May. 24, 1977 |
| 4021750 |
Broad-band TRAPATT amplifier having a tapered idler circuit |
May. 3, 1977 |
| 4009446 |
Dual diode microwave amplifier |
Feb. 22, 1977 |
| 4005372 |
Frequency tunable microwave apparatus having a variable impedance hybrid idler circuit |
Jan. 25, 1977 |
| 3974459 |
Millimeter waveguide oscillator and amplifier structure |
Aug. 10, 1976 |
| 3946336 |
Microwave solid state circuit employing a bipolar transistor structure |
Mar. 23, 1976 |
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