Combination integrate and dump filter and level detector
AssigneeGeneral Electric Company
InventorWilliam C. Hughes
Life of this patent
Estimating the term…
Abstract
A combination integrate and dump filter comprises an amplifier for performing both the integrate and level detecting functions. Selective circuit configuration (SCC) apparatus is provided and responsive to a first state of a baud signal for providing reactive feedback to the amplifier such that voltage is stored by the SCC apparatus, which stored voltage represents the time integral of the input signal. The SCC apparatus is further responsive to a second state of the baud signal for terminating the reactive feedback and for coupling the stored voltage to the amplifier input such that the stored voltage is amplified and, therefore, the amplifier output represents the cumulative polarity of the input signal over the integration interval.
Claims9
Apparatus for integrating an input signal in response to a baud signal, comprising:
- means for amplifying said input signal, said amplifying means having an input and an output;
- coupling means, coupled to receive said baud signal and said input signal, for coupling said input signal to said amplifying means input in response to a first state of said baud signal, said coupling means being responsive to a second state of said baud signal for decoupling said input signal from said amplifying means input;
- and
- selective circuit configuration (SCC) means, coupled between said amplifying means input and output and further coupled to receive said baud signal, responsive to said first state of said baud signal for providing reactive feedback between said amplifying means input and said amplifying means output such that electrical voltage representing a time integral of said input signal is stored by said SCC means, said SCC means being responsive to said second state of said baud signal for discontinuing said reactive feedback and for coupling said stored voltage to said amplifying means input such that said stored voltage is amplfied by said amplifying means and, therefore, said amplifying means output is indicative of the time integral of said input signal.
Apparatus for integrating an input signal in response to a baud signal, comprising:
- control means, coupled to receive said baud signal, for dividing a period of said baud signal to provide first and second control signals wherein a period of said first control signal is twice a period of said second control signal;
- means for amplifying said input signal, said amplifying means having an input and an output;
- coupling means, coupled to said control means to receive said second control signal, responsive to a first state of said second control signal for coupling said input signal to said amplifying means input, said coupling means being responsive to a second state of said second control signal for decoupling said input signal from said amplifying means input;
- and
- selective circuit configuration (SCC) means, coupled between said amplifying means input and output and further coupled to receive said first control signal, responsive to a first state of said first control signal for providing reactive feedback between said amplifying means input and said amplifying means output such that electrical voltage representing the time integral of said input signal is stored by said SCC means, said SCC means being responsive to a second state of said first control signal for discontinuing said reactive feedback and for coupling said stored electrical voltage to said amplifying means input such that said stored voltage is amplified by said amplifying means and, therefore, said amplifying means output is indicative of the time integral of said input signal, and further such that the effect on said amplifying means output caused by coherent interference is minimized.
A method for integrating an input signal comprising the steps of:
- coupling said input signal to an input of an amplifier and simultaneously providing reactive feedback from an output of said amplifier to said amplifer input via a feedback circuit
- storing in said feedback circuit an electrical voltage representing a time integral of said input voltage;
- decoupling said input signal from the input of said amplifier and simultaneously coupling said feedback circuit to said amplifer input to thereby couple the stored electrical voltage representing the time integral of said input voltage to said amplfier input;
- and
- providing an amplified output from said amplifier indicative of a polarity of the time integral of said input signal.
Dependencies are inferred from the claim text.