On-off body performance of a multiband antenna for wireless health monitoring

Performance of a multiband antenna for on/off body applications is evaluated and analysed in this paper. This compact microstrip patch antenna employs a combination of two rings and semi-circular slot to generate multiband resonances. Overall size of the antenna is 50 x 50 mm². The presented results show that this compact multiband antenna operates excellently in the vicinity of the human body making it a potential contender for wireless health monitoring systems providing simultaneous data transmission/reception at at- least three distinct frequency bands.