A Novel Design of Slotted Patch Antenna for WBAN Applications

Abstract

In this article, compact slotted rectangular patch antenna for wireless body area network (WBAN) applications. The designed antenna radiates at the resonance frequency of 5810MHz in free space and with body phantom model. The intended WBAN antenna design is simulated in free space as well as with human body phantom. The simulated antenna resonate frequency at 5810MHz with impedance bandwidth of 90MHz and 60MHz in free space and human body phantom respectively. The volume of the proposed rectangular slotted patch antenna is 64mm×52mm×0.857mm (3.26λ <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">0</inf> ×2.65λ <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">0</inf> ×0.044λ <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">0</inf> ). The proposed antenna broad side gain is 7.93dBi in free space and 7.67dBi with human body phantom. The width of the slot is chosen to optimize the impedance matching in biomedical application frequency range. The parametric analysis of antenna has been done to achieve the best performance of antenna for biomedical applications. The proposed antenna has been modelled and simulated using CST microwave suite with appropriate boundary conditions. The efficiency of slotted planar antenna is 94.8% without body phantom and 89.4% with human body phantom. An attempt has been made to propose patch antenna for achieving the impedance bandwidth within Spectrum range of Wireless Body Area Network (WBAN).The maximum SAR value of the intended antenna is within the range, as specified by IEEE safety guidelines.