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US 4,053,846 AGranted
Amplifier apparatus
AssigneeHoneywell Inc.
InventorWilliam F. Acker
Life of this patent
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Abstract
A communications receiver transversal filter equalizer is disclosed of the type using fixed increment tap weight adjustments involving use of amplitude data from the incoming signal in conjunction with tap weight adjustments.
Claims17
A variable gain amplifier for amplifying non-zero frequency components of an input signal, said amplifier comprising:
- a first characteristic means, having a nonlinear voltage-current relationship occurring between first and second terminals thereof, capable of carrying a significant current directed from said first terminal to said second terminal;
- a second characteristic means, having a nonlinear voltage-current relationship occurring between third and fourth terminals thereof, capable of carrying a significant current directed from said third terminal to said fourth terminal, said second and fourth terminals being electrically connected together;
- an input means connected to said first terminal to provide input signal current through said first characteristic means, between said first and second terminals, which is related to said input signal;
- a first capacitive means connected in series between said third terminal and an output terminal;
- and
- maintaining means to maintain selected non-zero frequency voltage components occurring between said first and second terminals substantially equal to corresponding non-zero frequency components occurring between said third and fourth terminals.
3 more elements
Dependencies are inferred from the claim text.