High gain ferrite cavity-backed slot antenna for RFID application

Author

Li, Chao ; Feng, Quanyuan

Author_Institution

Inst. of Microelectron., Southwest Jiao tong Univ., Chengdu, China

fYear

2010

fDate

8-11 May 2010

Firstpage

28

Lastpage

31

Abstract

This paper describes a high gain cavity-backed slot(CBS) antenna. A superstrate of thin metal is placed at a certain distance above the substrate to enhance the gain of the slot antenna. The cavity-backed slot antenna is fed by a microstrip line printed on the top of the substrate. In order to reduce the size of antenna, We use the ferrite as the substrate, and the optimized antenna size is 40*30(mm). The cavity thickness of this slot antenna is about 10 times smaller than conventional cavities, which would allow constructing this antenna even with standard multilayer planar technology. The simulation results and show that this metal superstrate-covered cavity-backed slot antenna can attain the gain of 7.16dBi. The antenna can meet the needs of particular RFID application.

Keywords

microstrip lines; radiofrequency identification; slot antennas; RFID application; high gain ferrite cavity-backed slot antenna; microstrip line; multilayer planar technology; size 30 mm; size 40 mm; Chaos; Ferrites; Frequency; Impedance; Microelectronics; Microstrip antennas; Permeability; Permittivity; Radiofrequency identification; Slot antennas; CBS antenna; RFID; high gain;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave and Millimeter Wave Technology (ICMMT), 2010 International Conference on

Conference_Location

Chengdu

Print_ISBN

978-1-4244-5705-2

Type

conf

DOI

10.1109/ICMMT.2010.5525296

Filename

5525296