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:
Feb. 23, 2016
Filed:
May. 14, 2013
Alan N. Willson, Jr., Pasadena, CA (US);
Alan N. Willson, Jr., Pasadena, CA (US);
Pentomics, Inc., Pasadena, CA (US);
Abstract
An apparatus and method for angle rotation is disclosed to rotate a complex input by the angle θ to produce a rotated complex output signal. A memory storage device generates control information based on a coarse angle θ. A coarse rotation butterfly circuit uses the control information to rotate the complex input signal by the coarse angle θto produce an intermediate complex number. The control information controls one or more multiplexers and/or adders in the coarse rotation butterfly circuit to rotate the complex input signal. The fine rotation butterfly circuit uses the control information to rotate the intermediate complex number by a fine angle θto produce the complex output signal. The control information controls one or more multiplexers and/or adders in the fine rotation butterfly circuit to rotate the intermediate complex number.