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:
Jan. 09, 2007
Filed:
Apr. 15, 2004
Applicant:
Daniel J. Ferris, Lakeville, MN (US);
Inventor:
Daniel J. Ferris, Lakeville, MN (US);
Assignee:
Xilinx, Inc., San Jose, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 7/44 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method and apparatus for providing non 2:1 current in a Gilbert cell mixer is disclosed. The Gilbert cell mixer provides lower voltage operation, lower LO drive and better linearity. Additional current sources are provided to drive the lower, source-coupled transistor pair thereby allowing operation of the switch transistors with lower current.