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:
Sep. 13, 2016
Filed:
Nov. 20, 2014
Applicant:
Qualcomm Incorporated, San Diego, CA (US);
Inventors:
Alireza Khalili, Sunnyvale, CA (US);
Mazhareddin Taghivand, Campbell, CA (US);
Arvind Keerti, Fremont, CA (US);
Assignee:
Qualcomm Incorporated, San Diego, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03L 7/099 (2006.01); H03B 5/12 (2006.01); H04B 1/00 (2006.01);
U.S. Cl.
CPC ...
H03L 7/099 (2013.01); H03B 5/1212 (2013.01); H04B 1/005 (2013.01); H04B 1/0064 (2013.01);
Abstract
Certain aspects of the present disclosure provide methods and apparatus for using multiple voltage-controlled oscillators (VCOs) to increase frequency synthesizer performance, such as in stringent multiple-input, multiple-output (MIMO) modes. One example apparatus capable of generating oscillating signals generally includes a first VCO, a second VCO, and connection circuitry configured to connect the second VCO in parallel with the first VCO if a phase-locked loop (PLL) associated with the second VCO is idle.