Title :
Patch antenna with EBG ground plane and two-layer substrate for passive RFID of metallic objects
Author :
Ukkonen, Leena ; Sydanheimo, Lauri ; Kivikoski, Markku
Author_Institution :
Inst. of Electron., Tampere Univ. of Technol., Rauma, Finland
Abstract :
Development of radio frequency identification (RFID) systems has increased rapidly in recent years. In many RFID applications, metallic objects need to be identified. However, generally used label-fabricated RFID tags do not work attached to metal. Therefore new antenna designs that can be mounted on metallic objects have to be developed. We present and discuss the development and performance of a patch antenna with an EBG ground plane and a two-layer substrate (on each side of the ground plane) for passive RFID tag applications. This antenna design is mountable on metallic objects and can be used in RFID tag antenna applications. The antenna is compared with a similar patch antenna with regular ground plane. A smaller patch size can be achieved with the EBG ground plane. Experiments show that both designs are mountable to metal without degeneration in their performance.
Keywords :
UHF antennas; microstrip antennas; photonic band gap; 900 MHz; 920 MHz; EBG ground plane; metallic objects; passive RFID tags; patch antenna; radio frequency identification systems; two-layer substrate; Antennas and propagation; Electromagnetic scattering; Frequency; Metamaterials; Passive RFID tags; Patch antennas; Periodic structures; Radiofrequency identification; Reflector antennas; Surface waves;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2004. IEEE
Print_ISBN :
0-7803-8302-8
DOI :
10.1109/APS.2004.1329561
