The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 04, 2016
Filed:
Jul. 16, 2014
Don L. Landt, Palo, IA (US);
Phillip R. Koenig, Martelle, IA (US);
Don L. Landt, Palo, IA (US);
Phillip R. Koenig, Martelle, IA (US);
Rockwell Collins, Inc., Cedar Rapids, IA (US);
Abstract
A circuit relies on the natural time constant presented to a pulse input signal which drops the signal level to a very low value 'zero state,' less than 0.1 percent of the peak value, before the next pulse arrives. The signal is amplified with a low-noise, wideband, AC-coupled amplifier and split into two equal signals. One of the signals is delayed relative to the other by a fraction of the repetition period and then both signals are input to separate very wideband track-and-hold circuits. Output signals from the track-and-hold circuits are amplified, subtracted and applied to the input of an analog-to-digital converter. The track-and-hold circuits are clocked in such a way that one track-and-hold holds the value at the peak of the signal and the other track-and-hold holds the value at the baseline of the signal, the point when the signal has decayed to the zero state.