公开(公告)号：US20170126257A1

公开(公告)日：2017-05-04

申请号：US15129352

申请日：2014-03-26

Applicant: Huawei Device Co., Ltd.

Inventor： Hongyu Wang ,  Xiang Che ,  Qiuliang Xu ,  Liping Yang ,  Jia Xu ,  Zhigang Liu ,  Zhenyu Liu

IPC: H04B1/00

CPC classification number: H04B1/0057 ,  H01Q1/243 ,  H01Q1/521 ,  H01Q5/00 ,  H01Q5/314 ,  H04B1/006 ,  H04B1/0064 ,  H04B15/02

Abstract: Embodiments disclose a radio frequency front-end system and a signal transmission control method. The system includes a first antenna, a second antenna, a first radio frequency circuit, a second radio frequency circuit, and a controller. The controller is configured to acquire a transmission frequency band selected by the first radio frequency circuit, and when a frequency in the transmission frequency band selected by the first radio frequency circuit is less than a preset frequency, to control the first radio frequency circuit to connect to the second antenna. The controller is further configured to disconnect a connection between the second radio frequency circuit and the second antenna, or to maintain an open circuit state between the second radio frequency circuit and the second antenna.