Summary
International Symposium on Antennas and Propagation
2012
Session Number:POS2
Session:
Number:POS2-57
Implanted Helical Dipole Antenna for UHF Band Applications
Basari Basari,
pp.-
Publication Date:2012/10/29
Online ISSN:2188-5079
Summary:
Current implanted medical devices, which use inductive coupling for communication, cannot be guaranted for transmitting medical data in several meters range. This triggers a study about implantable device systems to enable longer bidirectional communication by using electromagnetic transmission. In this system, the external devices such as home monitoring device or portable equipment will provide the patient more mobility, and the patient or the health care provider could benefit from timely and ease of access to important patient medical information via a networked connection. Due to such advantages, small antennas for implantable devices are very essensial components in monitoring systems to provide wirelessly communication between a patient and an access point. This paper proposes an implanted helical dipole antenna for an impantable device in wireless patient monitoring applications. The design is considered that by only using a syringe the device can be embedded into the human body for simplicity purpose. The antenna is operated in UHF band 924 MHz as consideration Indonesian frequency allocation for RFID applications. The antenna is quite small enough in UHF band with good performances in terms of S parameter, input impedance, bandwidth, radiation pattern and gain. The antenna has a gain for 10m short range communication with 13MHz bandwidth and 50-ohm impedance. The peak SAR is also less than the standard limitation for both of the 10g volume-averaged SAR and the 1g volume-averaged SAR.