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:
Aug. 23, 2022
Filed:
Jul. 24, 2021
Keysight Technologies, Inc., Santa Rosa, CA (US);
Rishi Mohindra, Milpitas, CA (US);
Keysight Technologies, Inc., Santa Rosa, CA (US);
Abstract
A system and method are provided for measuring absolute phase noise of a test signal from a DUT using a reference source for generating an RF reference signal, a mixer for mixing the RF reference signal and an input signal, an adjustable DC voltage source for outputting a DC voltage, and a PLL for maintaining a 90 degree quadrature between the RF reference and input signals. The method includes mixing RF calibration signals and the RF reference signal to provide calibration phase signals, at least one of the RF calibration signals having one-tone AM modulation; monitoring modulation tone frequency of the one-tone AM modulation; adjusting the DC voltage output by the adjustable DC voltage source to minimize a voltage level of the tone frequency being monitored; mixing the test signal and the RF reference signal to provide a measurement phase signal for measuring absolute phase noise of the test signal.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile