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:
Apr. 26, 2022
Filed:
May. 06, 2021
The Johns Hopkins University, Baltimore, MD (US);
Norman H. Adams, Fulton, MD (US);
Jeffrey A. Boye, Silver Spring, MD (US);
Adam V. Crifasi, Wheaton, MD (US);
Blair C. Fonville, Woodstock, MD (US);
Ian M. Hughes, Jessup, MD (US);
Amit Shah, Columbia, MD (US);
Gregory L. Weaver, Carlisle, PA (US);
John F. Youssef, Frederick, MD (US);
Darrell A. Zinn, Clarksville, MD (US);
The Johns Hopkins University, Baltimore, MD (US);
Abstract
A time transfer modem includes a radio frequency integrated circuit (RFIC), a radio frequency (RF) front end, and processing circuitry. The RF front end is configured to receive and up-convert an input for time transfer with a remote station to generate an up-converted timing signal centered at a select frequency that is outside of a frequency range of interest but within an operational frequency range of the RFIC. The RF front end may also be configured to attenuate, via a pre-selection filter, up-converted adjacent signals to generate a filtered timing signal at the select frequency. The RFIC may be configured to down-convert and digitize the filtered timing signal to generate a digitized timing signal for signal processing by the processing circuitry to determine a clock difference between a local clock signal and the digitized timing signal that originated from the remote station.