Title :
Two-rectangular-printed-spiral antenna with U-strip
Author :
Phaebua, Kittisak ; Phongcharoenpanich, Chuwong ; Torrungrueng, Danai ; Chinrungrueng, Jatuporn
Author_Institution :
Fac. of Eng. & Res., King Mongkut´´s Inst. of Technol. Ladkrabang, Bangkok
Abstract :
The two-rectangular-printed-spiral antenna with U-strip is proposed. The increasing electrical length and impedance matching is performed by using two spiral arms and adding U-strip. There is no ground plane for this antenna structure. The size is relatively small. The measured return loss is -12.435 dB at 433 MHz with 5.455 % bandwidth (428-452 MHz). The measured absolute gain is about -5 dBi. The performance of this small antenna is efficient for many wireless applications especially wireless sensor networks of ITS.
Keywords :
impedance matching; microstrip antennas; spiral antennas; wireless sensor networks; U-strip; electrical length; impedance matching; two-rectangular-printed-spiral antenna; wireless applications; wireless sensor networks; Bandwidth; Communication system traffic control; Costs; Dielectric substrates; Frequency; Monitoring; Roads; Sensor systems; Spirals; Wireless sensor networks;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2008. AP-S 2008. IEEE
Conference_Location :
San Diego, CA
Print_ISBN :
978-1-4244-2041-4
Electronic_ISBN :
978-1-4244-2042-1
DOI :
10.1109/APS.2008.4619486
