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. 02, 2021
Filed:
Mar. 13, 2019
Apple Inc., Cupertino, CA (US);
Abhishek Agrawal, Beaverton, OR (US);
Alon Cohen, Petach Tikva, IL;
Gil Horovitz, Emek-Hefer, IL;
Somnath Kundu, Hillsboro, OR (US);
Run Levinger, Tel Aviv, IL;
Stefano Pellerano, Beaverton, OR (US);
Jahnavi Sharma, Hillsboro, OR (US);
Evgeny Shumaker, Nesher, IL;
Izhak Hod, Haifa, IL;
Apple Inc., Cupertino, CA (US);
Abstract
A quadrature based voltage controlled oscillator (VCO) local oscillator (LO) system is disclosed. The system includes a phase detector, a quadrature phase VCO, a quadrature control path, an in-phase control path, and an in-phase VCO. The phase detector is configured to compare and generate phase error between a reference clock and an in-phase VCO output. The quadrature control path configured to generate a quadrature control voltage based on a quadrature VCO output and the in-phase VCO output. The quadrature phase VCO configured to generate the quadrature VCO output based on the quadrature control voltage and the generated phase error. The in-phase control path configured to generate an in-phase control voltage based on the quadrature VCO output and the in-phase VCO output. The in-phase VCO is configured to generate the in-phase VCO output based on the in-phase control voltage and the generated phase error. An all digital dual mode phase locked/phase tracking loop LO generate system is also disclosed.