APPARATUS AND METHOD FOR VARIABLE SIGNAL ATTENUATION IN WIRELESS COMMUNICATION SYSTEM

摘要

The present disclosure relates to a 5G (5th generation) or pre-5G communication system for supporting a higher data rate after a 4G (4th generation) communication system such as Long Term Evolution (LTE). The present disclosure provides an apparatus for variable signal attenuation in a signal attenuation device built into a stack-up structure in an RFIC, the first transmission line located on a first layer in the RFIC, and a second layer adjacent to the first layer. A second transmission line located and electromagnetically coupled to the first transmission line, and a control unit, wherein the first transmission line includes an impedance control unit at one side, and the control unit includes the impedance control unit It is possible to control variably.