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:
Jul. 23, 2013
Filed:
Oct. 12, 2011
Applicant:
Edmund Balboni, Littleton, MA (US);
Inventor:
Edmund Balboni, Littleton, MA (US);
Assignee:
Analog Devices, Inc., Norwood, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03B 1/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
Apparatus and methods provide a differential current buffer. The current buffer has cross-coupled feedback and offers relatively good common-mode rejection and a relatively low and linear input impedance, which can reduce intermodulation distortion. The current buffer can be used in, for example, an RF modulator, such as a quadrature modulator.