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Class Information
Number: 505/855
Name: Superconductor technology: apparatus, material, process > Apparatus, per se, device, per se, or process of making or operating same > Amplifier: (class 330)
Description: Subject matter wherein a variable electrical current or voltage input signal is applied to a device (i.e., amplifier) which controls a source of electrical energy applied to the same device from which is derived an enhanced output signal having substantially the same wave-form as the input signal.

Patents under this class:

Patent Number Title Of Patent Date Issued
7230384 Robust RF interface in a TWT Jun. 12, 2007
6005380 Sensitive slot antenna including inductively coupled squid array Dec. 21, 1999
5936458 Superconducting analog amplifier circuits Aug. 10, 1999
5844407 Method using squid array for improving the sensitivity of a slot antenna Dec. 1, 1998
5378999 Hybrid matrix amplifier Jan. 3, 1995
4820688 Traveling wave tube oscillator/amplifier with superconducting RF circuit Apr. 11, 1989
4638257 Amplification by a phase locked array of Josephson junctions Jan. 20, 1987
4585999 Radiofrequency amplifier based on a dc superconducting quantum interference device Apr. 29, 1986
4509018 Asymmetric superconducting quantum interference device in a linear amplifier circuit Apr. 2, 1985
4456912 High energy microwave defense system Jun. 26, 1984
4334158 Superconducting switch and amplifier device Jun. 8, 1982
4274015 Self-resetting Josephson digital current amplifier Jun. 16, 1981
4132956 Circuit arrangement for amplifying high frequency electromagnetic waves Jan. 2, 1979
4055810 Independent gain and bandwidth control of a traveling wave maser Oct. 25, 1977

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