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:
Aug. 17, 2010
Filed:
Dec. 22, 2007
Applicants:
John Hanford Spears, Johnsburg, IL (US);
Matthew Russell Greene, Crystal Lake, IL (US);
Inventors:
John Hanford Spears, Johnsburg, IL (US);
Matthew Russell Greene, Crystal Lake, IL (US);
Assignee:
AT&T Intellectual Property I, L.P., Reno, NV (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H02M 3/06 (2006.01); H03J 3/20 (2006.01);
U.S. Cl.
CPC ...
Abstract
An embodiment of the present invention provides an apparatus, comprising at least one anti-parallel pair VVC network comprised of two parallel VVCs with one biased in the opposite polarity of the other and at least one anti-series VVC network comprised of two VVCs configured in series, one biased in the opposite polarity of the other such that the resulting AC capacitive variations produce a desired capacitance variation.