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:
Feb. 23, 2010
Filed:
Oct. 20, 2004
Martin Hofmeister, Munich, DE;
Christoph Balz, Munich, DE;
Martin Hofmeister, Munich, DE;
Christoph Balz, Munich, DE;
Rohde & Schwarz GmbH & Co. KG, Munich, DE;
Abstract
The method for monitoring the stability of the carrier frequency (ω) of identical transmitted signals (s(t)) of several transmitters Sof a single-frequency network is based upon a calculation of a carrier-frequency displacement Δωof a carrier frequency ωof a transmitter Srelative to a carrier frequency ωof a reference transmitter S. For this purpose, the phase-displacement difference (ΔΔΘ(t−t)) caused by the carrier-frequency displacement Δωbetween a phase displacement ΔΘ(t) at a first observation time tand a phase displacement ΔΘ(t) at a second observation time tof a received signal (e(t)) of the transmitter Sassociated with the respective transmitted signal (s(t)) is determined relative to a received signal e(t) of the reference transmitter Sassociated with the reference transmitted signal s(t).