MULTI-BAND ANTENNA USING SWITCHING CAPABLE OF ENHANCING THE ISOLATION PROPERTY USING DOUBLE SWITCHING

摘要

PURPOSE: A multi-band antenna using switching is provided to receive a signal corresponding to a plurality of frequency domains by using only one antenna within the limited space of the mobile communications terminal.;CONSTITUTION: An antenna unit(110) transmits and receive a plurality of signals corresponding to a plurality of radio frequency bands. The feeding unit(120) transfers a plurality of signals transmitted and received through the antenna unit to the terminal. The ground keeps the electric potential to the zero. The first switching unit(140) electrically connects the signal of the first frequency wideband to the feeding unit through the antenna unit. The second switching unit(150) electrically connects the signal of the secondary frequency band to the feeding unit through the antenna unit. The first matching circuit(160) matches the antenna unit and the first switching unit. The second matching circuit(170) matches the antenna unit and the second switching unit.;COPYRIGHT KIPO 2010