A Tri-band Implantable Antenna for Biotelemetry Applications

Abstract

In this paper we propose a compact size rectangular implantable tri-band patch antenna for biotelemetry applications. Rogers RT6010 is used as substrate and superstrate material. The resonant frequency is further lowered by using a shorting pin which also reduces patch resistance. For excitation 50-ohm microstrip line is used. The antenna operates in MICS band (402-405) MHz, ISM band (902-928) MHz and (2.4-2.48) GHz at 402 MHz, 915 MHz and 2.4 GHz. The gain of the antenna is 2.05 dBi, 2.67 dBi and 5.39 dBi with bandwidth of 120 MHz, 166 MHz and 190 MHz at relevant frequencies when simulated in a fat layer box. SAR values are within allowable limits. The simulated results show that the antenna is an excellent choice for implantable applications as it can be used for data transmission, wakeup signal and wireless power transfer by using three frequency bands.

Analysis of truncated structure flexible microstrip patch antenna on jute substrate for biomedical applications

“…A rectangular copper patch is used on the upper side with a height of .03 mm. The excitation in the patch is provided by the coaxial feeding technique at the dimension of (1, −0.7) [29].…”

A Miniaturized Implantable Antenna for Wireless Power Transfer and Communication in Biomedical Applications

“…Moreover, an implantable antenna of a small size can reduce the risk of infection and increase durability. Recently, the planar inverted-F antenna (PIFA) [7][8][9], the meander-line (ML) antenna [10], and the loop antenna [11] have been widely used for implantable devices. Because they operate at multiple bands, using the shorting pin, ground slot, or shunt capacitor can easily adjust to the desired resonant frequencies [12].…”