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:
Mar. 23, 2021
Filed:
Feb. 27, 2020
Keysight Technologies, Inc., Santa Rosa, CA (US);
Andrew Michael Owen, Lake Villa, IL (US);
Loren C. Betts, Rohnert Park, CA (US);
Keysight Technologies, Inc., Santa Rosa, CA (US);
Abstract
A method of determining group delay between periodic radio frequency (RF) signals received at a narrow-band coherent receivers includes receiving a first periodic RF signal at a first coherent receiver in the frequency domain, receiving a second periodic RF signal at a second coherent receiver in the frequency domain, which is delayed with respect to the first periodic RF signal, the first and second periodic signals having the same period and carrier frequency; determining a cross-spectrum signal of the first and second periodic RF signals in the frequency domain, the cross-spectrum signal including amplitudes and phases versus frequency; calculating a slope of phase of the cross-spectrum signal at frequencies over at least a portion of a bandwidth of the cross-spectrum signal; and determining a group delay between the first and second periodic RF signals to be the slope of phase of the cross-spectrum signal.