公开(公告)号：US10200232B1

公开(公告)日：2019-02-05

申请号：US15800634

申请日：2017-11-01

Applicant: THE REGENTS OF THE UNIVERSITY OF MICHIGAN

Inventor： David D. Wentzloff ,  Hun-Seok Kim ,  Avish Kosari

IPC: H04L27/36 ,  H04L5/22 ,  H04B1/04

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.