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. 29, 2024
Filed:
Jun. 05, 2023
Rockwell Collins, Inc., Cedar Rapids, IA (US);
Stephen A. Ganje, Frisco, TX (US);
Rockwell Collins, Inc., Cedar Rapids, IA (US);
Abstract
A system and method for removing modulated interference (e.g., FSK, MSK, CW) from an input signal demodulates the input signal into a tracking bitstream via a set of phase locked loop (PLL) filters, one PLL filter for each modulated interference component (e.g., signal) known or suspected to be interfering with the input signal. Each PLL filter estimates, based on an estimated modulation frequency and center frequency associated with its target modulated interference component, a peak magnitude, phase, and updated center frequency and, based on these parameters, approximates the target interference component. Each re-created modulated interference component is subtracted from the original input signal to produce an output signal from which the known or suspected modulated interference components have been substantially removed.