公开(公告)号：US20150087250A1

公开(公告)日：2015-03-26

申请号：US14490686

申请日：2014-09-19

Applicant: ASUSTeK COMPUTER INC.

Inventor： Guo-Ying HUNG ,  I-Tang CHUNG

IPC: H04B1/04

CPC classification number: H03F3/191 ,  H03F2200/294 ,  H03H2/006 ,  H03H7/09 ,  H03H7/52

Abstract: A radio frequency communication system and a noise isolation method applied to the radio frequency communication system are provided. The radio frequency communication system includes an antenna, an amplifier and a noise isolating unit. The amplifier is electrically connected to the antenna to amplify a common-mode signal transmitted by the antenna and outputs an amplified common-mode signal. The noise isolating unit is electrically connected to the amplifier to isolate the amplified common-mode signal. The noise isolating unit includes a first transformer and a second transformer. The noise isolating unit isolates the common-mode signal and transmits the differential-mode signal, which can effectively reduce the noise and improve a signal to noise ratio without affecting the original signal.

Abstract translation: 提供了应用于射频通信系统的射频通信系统和噪声隔离方法。 射频通信系统包括天线，放大器和噪声隔离单元。 放大器电连接到天线，以放大由天线发送的共模信号，并输出放大的共模信号。 噪声隔离单元电连接到放大器以隔离放大的共模信号。 噪声隔离单元包括第一变压器和第二变压器。 噪声隔离单元隔离共模信号并发送差分模式信号，可有效降低噪声，提高信噪比，而不影响原始信号。