Amplitude-and rise-time-insensitive timing-shaping filters

Details Amplitude-and rise-time-insensitive timing-shaping filters Amplitude-and rise-time-insensitive timing-shaping filters

1992-08-13

1995-03-07

Dolinar, Andrew M.

Miscellaneous active electrical nonlinear devices, circuits, and

Specific identifiable device, circuit, or system

Unwanted signal suppression

327317, H03K 5153

Patent

active

053961870

ABSTRACT:
An amplitude- and rise-time-insensitive timing-shaping filter (10) for converting a selected input signal into a bi-polar output signal having a zero-crossing point which is independent of the rise-time and amplitude of substantially linear-edge input signals, and which is amplitude insensitive for input signals of arbitrary fixed shapes. The amplitude- and rise-time-insensitive timing-shaping filter (10) includes an attenuator (14) for generating an attenuated signal, a delay path (12) for generating a delay signal, and a differencer (16) for subtracting the attenuated signal from the delayed signal. The delay path (12) of the present invention includes a low-pass filter of a selected order and configuration, an all-pass filter with a selected order and configuration, or an all-pass-low-pass filter combination for generating a delayed signal.

REFERENCES:
patent: 4204170 (1980-05-01), Kage
patent: 4424462 (1984-01-01), Gay
patent: 4443768 (1984-04-01), Nowlin
patent: 4697098 (1987-09-01), Cloke
patent: 4918402 (1990-04-01), Voorman et al.
Nowlin, C. H., "Low-Noise Lumped-Element Timing Filters with Rise-Time Invariant Crossover Times," Rev. Sci. Instrum., 63 (4), Apr. 1992, pp. 2322-2326.
Turko, B. T., et al., "A Precision Timing Discriminator for High Density Detector Systems," Conference Record of the 1991 IEEE Nuclear Science Symposium and Medical Imaging Conference, Nov. 2-9, 1991, pp. 711-715.

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