公开(公告)号：US09641316B2

公开(公告)日：2017-05-02

申请号：US14677459

申请日：2015-04-02

Applicant: Huawei Technologies Co., Ltd.

Inventor： Zhaoxin Ma ,  Nianyong Zhu

IPC: H03K21/00 ,  H03K23/00 ,  H03K25/00 ,  H04L7/033 ,  G06F1/02 ,  H03K21/10 ,  H03K23/66 ,  H03L7/16

CPC classification number: H04L7/033 ,  G06F1/022 ,  H03K21/10 ,  H03K23/667 ,  H03L7/16

Abstract: Embodiments of the present invention disclose a frequency divider and a radio communications device. The frequency divider includes a shift register unit and an output frequency synthesizing unit; the shift register unit includes multiple cyclically cascaded basic units; a basic unit at each level includes 2N D flip-flops connected in series and a multiplexer, outputs of the 2N D flip-flops connected in series are separately connected to the multiplexer; an output of the multiplexer is connected to an input of a next-level basic unit; the output frequency synthesizing unit superposes an output signal of the first D flip-flop of the basic unit at each level to generate a frequency division output signal.