A Frequency Agile Textile Based Wearable Antenna for On Body Biomedical Applications

Here we present, a frequency tunable textile based wearable monopole antenna with center frequency at 2.45 GHz and at 5.2 GHz for wearable and biomedical telemetry application. Switching mechanism of two PIN diodes have been utilized to achieve the frequency agility. This antenna exhibits 17.14% impedance bandwidth at 2.45 GHz and 10% impedance bandwidth at 5.2 GHz when simulated in two-layer phantom model. Our proposed antenna satisfies the specified limit of specific absorption rate (SAR) as set by the FCC (Federal Communication Commission).