Title :
Low profile small normal mode helical antenna achieving long communication distance
Author :
Hong, Wongook ; Yamada, Yoshihide ; Michishita, Naobumi
Author_Institution :
Dept. of Electr. & Electron. Eng., Nat. defense Acad., Yokosuka
Abstract :
In this paper, the design concept of a rectangular normal mode helical antenna is explained. And calculated and measured antenna input impedance and gain are shown in the metal proximity condition. High antenna gain of 2.06dBd is ensured. Next, the antenna structure capable of matching to an IC chip is shown. By employing this antenna, the metal proximity use tag is fabricated. Communication distance of this tag is ensured though experiments.
Keywords :
helical antennas; antenna input gain; antenna input impedance; antenna structure; metal proximity use tag; rectangular normal mode helical antenna design; Antenna measurements; Dipole antennas; Helical antennas; Impedance matching; Impedance measurement; Magnetic separation; RFID tags; Semiconductor device measurement; Shape; Wire;
Conference_Titel :
Antenna Technology: Small Antennas and Novel Metamaterials, 2008. iWAT 2008. International Workshop on
Conference_Location :
Chiba
Print_ISBN :
978-1-4244-1522-9
DOI :
10.1109/IWAT.2008.4511313
