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.

Date of Patent:
Nov. 08, 2016

Filed:

Mar. 06, 2015
Applicant:

Qualcomm Incorporated, San Diego, CA (US);

Inventors:

Mohammad Bagher Vahid Far, San Jose, CA (US);

Alireza Khalili, Sunnyvale, CA (US);

Yashar Rajavi, Mountain View, CA (US);

Amirpouya Kavousian, San Jose, CA (US);

Assignee:

QUALCOMM Incorporated, San Diego, CA (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03B 19/14 (2006.01); H03K 5/156 (2006.01); H03K 5/00 (2006.01); H03B 19/10 (2006.01);
U.S. Cl.
CPC ...
H03K 5/00006 (2013.01); H03B 19/10 (2013.01); H03B 19/14 (2013.01); H03K 5/1565 (2013.01);
Abstract

A method, an apparatus, and a computer program product are provided. The apparatus outputs a sinusoidal signal according to a first clock frequency, generates, a first digital signal having a 25% duty cycle based on the sinusoidal signal, generates a second digital signal having a 25% duty cycle based on the sinusoidal signal, combines the first digital signal and the second digital signal to generate a combined digital signal having a 50% duty cycle and a second clock frequency that is double the first clock frequency, and doubles the second clock frequency of the combined digital signal to generate an output signal having a third clock frequency that is quadruple the first clock frequency. The apparatus further generates a first control voltage and a second control voltage for the first buffer and a third control voltage for the second buffer based on the output signal.


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