ANTENNA DEVICE USING A CRLH(COMPOSITE RIGHT/LEFT-HANDED) TRANSMISSION LINE CAPABLE OF FILTERING ONLY A SPECIFIC FREQUENCY BAND WITHOUT CHANGING THE STRUCTURE OF AN ANTENNA AND A MANUFACTURING METHOD THEREOF

摘要

PURPOSE: An antenna device and a manufacturing method thereof using a CRLH(Composite Right/Left-Handed) transmission line are provided to filter only a specific frequency band without changing the structure of an antenna by using a matched CRLH transmission line having a filtering feature.;CONSTITUTION: A half-wave length patch antenna includes a CRLH transmission line(103) and a transmission line including a patch radiator(100), a transformer(101), a first step(102a), and a second end(102b). A dielectric is formed on a ground plane. A rectangular or circular patch radiator is attached to an upper side of the dielectric. The first step supplies power to the patch radiator. The second end is connected to a power supply terminal. The transformer is placed between the first step of a feed line and the patch radiator. The impedance of the patch radiator and the impedance of the feed line are matched.;COPYRIGHT KIPO 2012