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.

公开(公告)号：US20160337025A1

公开(公告)日：2016-11-17

申请号：US15223845

申请日：2016-07-29

Applicant: Huawei Device Co., Ltd.

Inventor： Qiuliang Xu ,  Liping Yang ,  Changfeng Zhang ,  Zhijun Chen

IPC: H04B7/08 ,  H01Q5/378 ,  H04W4/06 ,  H01Q3/24 ,  H01Q1/48 ,  H04L5/14 ,  H04B1/44 ,  H01Q1/24

CPC classification number: H04B7/0805 ,  H01Q1/243 ,  H01Q1/48 ,  H01Q3/24 ,  H01Q5/378 ,  H01Q9/42 ,  H01Q21/28 ,  H03F3/24 ,  H04B1/44 ,  H04B2001/0408 ,  H04L5/14 ,  H04W4/06

Abstract: The present invention is applicable to the field of mobile terminals and provides an antenna switching system and method. The antenna switching system includes a radio-frequency transceiver circuit, a primary antenna, and a parasitic antenna, where the primary antenna is connected to the radio-frequency transceiver circuit, and further includes a switch circuit, configured to connect, when the parasitic antenna is used to receive or send a radio-frequency signal, the parasitic antenna and the radio-frequency transceiver circuit. If the parasitic antenna is grounded, the parasitic antenna may be configured to spread a spectrum. In addition, when carrier aggregation is needed, the parasitic antenna is connected to the radio-frequency transceiver circuit, so as to become an independent receive or transmit antenna.

Abstract translation: 本发明适用于移动终端领域，并提供天线切换系统和方法。 天线切换系统包括射频收发电路，主天线和寄生天线，其中主天线连接到射频收发器电路，并且还包括开关电路，其被配置为当寄生天线 用于接收或发送射频信号，寄生天线和射频收发电路。 如果寄生天线接地，则寄生天线可以被配置成扩展频谱。 此外，当需要载波聚合时，寄生天线连接到射频收发电路，以便成为独立的接收或发射天线。