CPW-FED SHORTED F-SHAPED MONOPOLE ANTENNA FOR 5.8-GHz RFID APPLICATION

摘要

A novel coplanar waveguide (CPW)-fed F-shaped planar monopole antenna obtained by embedding folded slots in a rectangular patch on a single-layer substrate is proposed. To expand the impedance bandwidth and miniaturize the antenna size for suitable use in 5.8-GHz radio frequency identification (RFID) systems, a branch of the F-shaped antenna is shorted. The designed antenna including ground plane is only 16.8 mm in height and 1.3 mm in width and can operate in the 5.8-GHz frequency band with measured impedance bandwidth and average antenna gain of 640 MHz and 4 dBi, respectively, as well as broadside radiation patterns. These properties make this antenna suitable for RFID tags.