A Miniaturized Triple Band DGS Implantable Antenna for Biotelemetry

A metamaterial unit-cell based patch radiator for brain-machine interface technology

“…A homogeneous liquid phantom was used to measure the antenna, and the ISM band (2400 MHz) shifted to a slightly higher band in that test. Various other implantable antenna configurations with different characteristics have also been proposed [ [10] , [11] , [12] , [13] ]; however, no single antenna design excels in all parameters. This has led to the pursuit of designing an implantable antenna that balances compact dimensions, high bandwidth, substantial gain, and low SAR.…”

“…In contrast, a substrate of higher permittivity will affect radiation efficiency by converting antenna input power into surface waves [ [ 13 ]]. Techniques like incorporating shorting pins between the radiating patch and ground [ [ 4 ]] or lengthening current paths within the antenna radiator have been employed to minimize antenna size while maintaining optimal performance [ [ 9 , 11 ]]. Furthermore, compact-sized implantable antennas often exhibit limited bandwidth.…”

Modeling of a Compact Dual Band and Flexible Elliptical-Shape Implantable Antenna in Multi-Layer Tissue Model

“…[1][2][3][4][5][6]. In [7][8][9], compact dual and triple frequency bands rectangular-shape implantable antennas were proposed. The compact size was achieved using short-circuited pins, while dual and triple frequency bands were obtained by inserting slots in the radiating patch and in the ground plane.…”

“…The compact size was achieved using short-circuited pins, while dual and triple frequency bands were obtained by inserting slots in the radiating patch and in the ground plane. In [9], Defected Ground Structure (DGS) was used for multiple bands antenna. Generally, implantable antennas suffer from low gain and narrow bandwidth.…”