Title :
A folded slot antenna with full ground plane for wearable waterproof wireless sensors
Author :
Varnoosfaderani, Mohammad Vatankhah ; Thiel, David Victor ; Jun Wei Lu
Author_Institution :
Griffith Sch. of Eng., Griffith Univ., Brisbane, QLD, Australia
Abstract :
A 3D dual band slot antenna is presented for waterproof wearable wireless sensors. The size of the antenna is 52mm × 36mm × 12mm and the slot is etched on the internal walls of a waterproof plastic box which accommodates the sensor electronics. Numerical modeling of the structure against the body revealed a 10 dB impedance bandwidth of 12.3% at 2.45 GHz and 21% at 5.2 GHz respectively. The antenna features a full ground plane underneath which reduces the interaction between the human body and the radiator and so avoids the huge drop in antenna efficiency. The total efficiency of antenna is more than 90% in free space and reduces to 54% at 2.45 GHz and 70% at 5 GHz when located against the body.
Keywords :
multifrequency antennas; numerical analysis; slot antennas; wearable antennas; wireless sensor networks; 3D dual band slot antenna; antenna efficiency; folded slot antenna; frequency 2.45 GHz; frequency 5.2 GHz; full ground plane; interaction reduction; numerical modeling; sensor electronics; waterproof plastic box; wearable waterproof wireless sensors; Dipole antennas; Sensors; Slot antennas; Wireless communication; Wireless sensor networks;
Conference_Titel :
Antennas and Propagation Society International Symposium (APSURSI), 2014 IEEE
Conference_Location :
Memphis, TN
Print_ISBN :
978-1-4799-3538-3
DOI :
10.1109/APS.2014.6904747
