公开(公告)号：US10852349B2

公开(公告)日：2020-12-01

申请号：US16359954

申请日：2019-03-20

Applicant: MEDIATEK INC.

Inventor： Chih-Yang Liu ,  Ying-Chou Shih ,  Yen-Ju Lu ,  Chih-Ming Hung ,  Jui-Lin Hsu

IPC: G01R31/30 ,  G01R31/302 ,  G01R31/28 ,  G01R31/303 ,  H01Q1/22 ,  G01R1/04

Abstract: A wireless test system includes a load board having an upper surface and a lower surface. The load board has a testing antenna disposed on the load board. A socket for receiving a device under test (DUT) having an antenna structure therein is disposed on the upper surface of the load board. The antenna structure is aligned with the testing antenna. The wireless test system further includes a handler for picking up and delivering the DUT to the socket. The handler has a clamp for holding and pressing the DUT. The clamp is grounded during testing and functions as a ground reflector that reflects and reverses radiation pattern of the DUT from an upward direction to a downward direction toward the testing antenna.

公开(公告)号：US20140233441A1

公开(公告)日：2014-08-21

申请号：US14139806

申请日：2013-12-23

Applicant: MEDIATEK INC.

Inventor： Chih-Hung Lee ,  Ming-Da Tsai ,  Jui-Lin Hsu

IPC: H04L5/06

CPC classification number: H03H7/463 ,  H03H7/09 ,  H04B1/005

Abstract: A diplexer, for coupling a first radio frequency (RF) signal corresponding to a first carrier frequency and a second RF signal corresponding to a second carrier frequency is disclosed. The diplexer includes a first port arranged to couple the first RF signal; a second port arranged to couple the second RF signal; a third port capable of connecting an antenna; a first impedance unit coupled to the first port and the third port; and a second impedance unit coupled to the second port and the third port; wherein the first port, the second port and the third port are coupled to a direct current (DC) ground; wherein the first impedance unit is arranged to provide an first open-circuit impedance against the second RF signal, and the second impedance unit is arranged to provide a second open-circuit impedance against the first RF signal.

Abstract translation: 公开了一种用于耦合对应于第一载波频率的第一射频（RF）信号和对应于第二载波频率的第二RF信号的双工器。 双工器包括被布置成耦合第一RF信号的第一端口; 布置成耦合第二RF信号的第二端口; 能够连接天线的第三端口; 耦合到所述第一端口和所述第三端口的第一阻抗单元; 以及耦合到所述第二端口和所述第三端口的第二阻抗单元; 其中所述第一端口，所述第二端口和所述第三端口耦合到直流（DC）接地; 其中所述第一阻抗单元布置成针对所述第二RF信号提供第一开路阻抗，并且所述第二阻抗单元布置成针对所述第一RF信号提供第二开路阻抗。