3D small antenna for energy harvesting applications on implantable micro-devices

This paper reports a 3D small micro-antenna suitable for energy harvesting applications in the low gigahertz regime to supply 1μW power to small, implantable medical device. The micro antenna is designed to envelope a 500 × 500 × 500 μm
³
implantable device and simulated as embedded in 5 × 5 × 5 mm
³
of muscle tissue. The proposed antenna was fabricated by combining planar photolithography and surface tension driven self-folding techniques in order to achieve the desired 3D profile.