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:
Jul. 28, 2015
Filed:
Apr. 22, 2014
Roi Menahem Shor, Tel Aviv, IL;
Ori Goren, Kibutz Ruchama, IL;
Avraham Horn, Givat Shmuel, IL;
Freescale Semiconductor, Inc., Austin, TX (US);
Abstract
Interfacing between radio units in a base station in a mobile communication system may use synchronized clocks. A controller device has a tracking clock circuit for generating a transmit clock, the tracking clock circuit comprising a clock input for receiving a reference clock and a sync input for receiving an external synchronization signal. A multiplying phase locked loop generates the transmit clock in dependence on the reference clock and a divider output of a controllable divider coupled to the transmit clock. A tracking loop has a phase detector coupled to the sync input and the divider output for detecting a phase error between the external synchronization signal and transmit clock, and a phase control circuit for generating a phase control signal based on the phase error, the phase control signal being coupled to a control input of the controllable divider for adapting the division function.