Title :
A Low Profile Dual Band Antenna for Implanted ZigBee Based Biosensors
Author :
Wu, Chih-Kuang ; Chien, Tsung-Fu ; Yang, Hung-Chi ; Cheng, Chien-Min ; Luo, Ching-Hsing
Author_Institution :
Dept. of Electr. Eng., Nat. Cheng Kung Univ., Tainan, Taiwan
Abstract :
In this paper, a low profile uniplanar monopole dual band antenna was developed for implanted Zigbee based biosensors. The proposed antenna is consisted of T type monopole radiating part and four rectangular inductive loading spirals structure. The operating resonant frequencies are designed to conform to ZigBee dual bands, 886~924MHz and 2.4~2.45GHz, respectively. While the proposed antenna was immersed in fresh ground pork, it exhibits good implanted antenna radiating characteristic, omni directional radiation pattern and high measured peak gain at 900MHz/ 2.4GHz, -11.07 and -14.2 (dBi), respectively. Due to avoiding the resonance frequency of water molecules and lower tissue absorption loss, The RF link range in the lower-frequency band (868~928 MHz) can be improved significantly.
Keywords :
UHF antennas; Zigbee; antenna radiation patterns; biological tissues; biomedical telemetry; biosensors; monopole antennas; multifrequency antennas; omnidirectional antennas; planar antennas; RF link range; T-type monopole radiating part; antenna radiating characteristic; frequency 2.4 GHz to 2.45 GHz; frequency 868 MHz to 928 MHz; fresh ground pork; implanted ZigBee-based biosensors; low-profile dual-band antenna; omnidirectional radiation pattern; rectangular inductive loading spiral structure; resonance frequency; tissue absorption loss; uniplanar monopole antenna; water molecules; Antenna measurements; Antenna radiation patterns; Dual band; Resonant frequency; Spirals; Zigbee; Low Profile; SAR; ZigBee Based Biosensor; implanted dual band antenna;
Conference_Titel :
Intelligent Computation and Bio-Medical Instrumentation (ICBMI), 2011 International Conference on
Conference_Location :
Wuhan, Hubei
Print_ISBN :
978-1-4577-1152-7
DOI :
10.1109/ICBMI.2011.27
