A Printed 2.4 GHz/5.8 GHz Dual-Band Monopole Antenna with a Protruding Stub in the Ground Plane for WLAN and RFID Applications
The design of a simple microstrip fed Folded Strip Monopole Antenna (FSMA) with a protruding stub in the ground plane for the application in WLAN (Wireless Local Area Network) and RFID (Radio-Frequency IDentification) is presented. The antenna has two resonant paths, one in the radiating element (folded strip) and the other in the protruding stub of the ground plane. It supports two resonances at 2.4GHz and 5.81GHz, which are the center frequencies of WLAN and RFID. Effectively consistent radiation pattern and large percentage bandwidth have been observed.