US 2026/0280531 A1Published application

Pulse Width Actuated Switch Filter System

OwnerStephen R. Capasso, IIinventor

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Abstract

A pulse width actuated switch filter system and method for pulse width actuated switch filtering provides enhanced sensitivity through adaptive filtering based on input pulse signal width characteristics. The system comprises multiple processing channels, each configured to detect specific pulse widths and automatically activate corresponding optimized low-pass filters. Each processing channel includes an operational amplifier buffer functioning as a low noise amplifier to maintain signal to-noise ratio, a D-type flip-flop that converts amplified and conditioned signals into steady-state digital DC output signals, and a TTL-compatible transistor-based buffer driver. The system integrates a switching matrix routing signals to appropriate low-pass filters based on detected pulse widths, with each low-pass filter specifically designed to provide optimal sensitivity enhancement for its corresponding pulse duration. This architecture overcomes conventional convolution processing limitations, achieving sensitivity improvements for enhanced radar target detection in challenging electromagnetic environments while maintaining signal processing integrity through selective filter activation.

Claims11

Dependent claims

A pulse width actuated switch filter system detecting input pulse signals, comprising:

(a) a plurality of processing channels, each processing channel comprising:
(i) an operational amplifier buffer configured to amplify and condition input pulse signals inputs while maintaining signal-to-noise ratio into amplified and conditioned signals;
(ii) a D-type flip-flop coupled to the operational amplifier buffer, the D-type flip-flop configured to convert the amplified and conditioned signals into steady-state digital DC output signals;
and
(iii) a transistor-based buffer driver coupled to the D-type flip-flop output, the transistor buffer driver configured to generate TTL-compatible control signals from the steady state digital DC output signals as an output;
(b) a filter switching matrix, the filter switching matrix comprising:
(i) a plurality of switches;
(ii) where each switch is operationally connected the corresponding low-pass filter;
(iii) where each switch is operationally connected the corresponding processing channel;
(c) a low-pass filter bank, the low-pass filter bank comprising:
(i) a plurality of low-pass filters;
(ii) where each low-pass filter is operationally connected to the corresponding switch from the filter switching matrix;
(d) where each processing channel is configured to detect a discrete pulse width from the input pulse signals and to output corresponding TTL-compatible control signals,
(e) wherein the TTL-compatible control signals from each processing channel actuate respective switch circuits to selectively activate the corresponding low-pass filters based on detected pulse widths,
(i) wherein the input pulse signals are processed through the activated low-pass filter and the activated low-pass filter outputs filtered output signals.

12 more elements

A method for pulse width actuated switch filtering comprising:

(a) receiving input pulse signals at a plurality of processing channels, each processing channel configured to detect a specific pulse width;
(b) amplifying and conditioning the input pulse signals in each processing channel using an operational amplifier buffer while maintaining signal-to-noise ratio;
(c) converting the amplified and conditioned signals in each processing channel to steady-state DC output signals using a D-type flip-flop;
(d) generating TTL-compatible control signals in each processing channel from the steady-state DC output signals using a transistor-based buffer driver;
and
(e) actuating respective switch circuits based on the TTL-compatible control signals and selectively activating corresponding low-pass filters by wherein each low-pass filter is activated only when its corresponding specific pulse width is detected;
(f) processing the input pulse signals through the selected activated low-pass filter;
(g) outputting a filtered output signals from the selected low-pass filter based on the input pulse signal.

5 more elements

Dependencies are inferred from the claim text.