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. 05, 2019
Filed:
Nov. 01, 2017
Applicant:
The Regents of the University of Michigan, Ann Arbor, MI (US);
Inventors:
David D. Wentzloff, Ann Arbor, MI (US);
Hun-Seok Kim, Ann Arbor, MI (US);
Avish Kosari, Ann Arbor, MI (US);
Assignee:
The Regents of The University of Michigan, Ann Arbor, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 27/36 (2006.01); H04L 5/22 (2006.01); H04B 1/04 (2006.01);
U.S. Cl.
CPC ...
H04L 27/362 (2013.01); H04L 5/22 (2013.01); H04B 1/04 (2013.01);
Abstract
A digital quadrature architecture is presented that employs switched current digital power amplifiers and uses a digital class-B input code profile in combination with non-overlapping LO signals to overcome the low efficiency problems of conventional quadrature architectures. By employing digital class-B signals, the number of I/Q cells is reduced to half and the need for extra processing of the sign bits is eliminated in the transmitters, thereby improving the efficiency.