Title :
Development of 900MHz band one-sided directional antenna on flexible substrate
Author :
Hirabaru, Takuya ; Kanaya, Haruichi ; Kanemoto, Daisuke ; Yoshida, Keiji ; Pokharel, Ramesh K. ; Yoshitomi, Kuniaki
Author_Institution :
Dept. of Electron., Kyushu Univ., Fukuoka, Japan
Abstract :
In this paper, we designed a planar one-sided directional slot antenna on flexible substrate for UHF Radio Frequency Identification (RFID). Our proposed planar antenna has the impedance matching circuit composed of coplanar waveguide (CPW) transmission line and interdigital gap, and a top metal layer and a bottom metal layer (floating ground). In order to realize the one-sided directional properties, the length of the top metal layer is adjusted, and at that time, the bottom metal layer is adjusted to the length that doesn´t resonate. The final antenna size for the UHF band RFID applications is 67 mm × 61 mm × 1.3mm. In order to observe the radiation characteristics of the proposed antenna on the flexible substrate, we fabricated the one-sided directional slot antenna using dielectric substrate that can be bent a little, and results of measurements are compared with that of simulation.
Keywords :
UHF antennas; antenna radiation patterns; coplanar transmission lines; coplanar waveguides; directive antennas; impedance matching; planar antennas; radiofrequency identification; slot antennas; CPW transmission line; RFID; UHF radiofrequency identification; coplanar waveguide transmission line; dielectric substrate; flexible substrate; frequency 900 MHz; impedance matching circuit; interdigital gap; metal layer; planar one-sided directional slot antenna; radiation characteristics; Directive antennas; Impedance matching; Metals; Radiofrequency identification; Slot antennas; Substrates; One-sided directional slot antenna; RFID; coplanar waveguide; flexible substrate; matching circuit;
Conference_Titel :
Antennas and Propagation (APSURSI), 2011 IEEE International Symposium on
Conference_Location :
Spokane, WA
Print_ISBN :
978-1-4244-9562-7
DOI :
10.1109/APS.2011.5996449