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:
May. 03, 2016
Filed:
May. 16, 2012
Applicant:
Ben Bartram, Cambourne, GB;
Inventor:
Ben Bartram, Cambourne, GB;
Assignee:
SNAPTRACK, INC., San Diego, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03G 3/20 (2006.01); H03F 1/02 (2006.01); G01R 21/00 (2006.01); H03F 3/19 (2006.01); H03F 3/21 (2006.01);
U.S. Cl.
CPC ...
H03F 1/0233 (2013.01); G01R 21/00 (2013.01); H03F 1/0222 (2013.01); H03F 3/19 (2013.01); H03F 3/21 (2013.01); H03F 2200/102 (2013.01); H03F 2200/105 (2013.01); H03F 2200/228 (2013.01); H03F 2200/324 (2013.01); H03F 2200/451 (2013.01);
Abstract
The invention relates to a method of calibrating an envelope path and an input path of an amplification stage including an envelope tracking power supply, the method comprising: generating input signals having a known relationship for each of the input and envelope paths; and varying an amplitude and a delay of the signal in one of the envelope and input paths in order to reduce the variation in the power detected in a signal at the output of the amplification stage.