公开(公告)号：US09929759B1

公开(公告)日：2018-03-27

申请号：US14843934

申请日：2015-09-02

Applicant: Marvell International Ltd.

Inventor： Yi Zhao ,  Renaldi Winoto ,  Li Lin

IPC: H04J1/00 ,  H04B1/10 ,  H04L5/14

CPC classification number: H04B1/1036 ,  H04L5/1461

Abstract: An apparatus includes a first circuit transmitting a first signal to a port, a second circuit receiving a second signal from the port, a first peak-notch filter coupled between the port and the first circuit and configured to pass the first signal and block the second signal, a second peak-notch filter coupled between the port and the second circuit and configured to pass the second signal and block the first signal, and a third filter coupled between an input of the first filter and a ground or between an output of the second filter and the ground. The first signal has a first frequency and the second signal has a second frequency that is different from the first frequency.