Fractal geometry has been proven to be useful in several disciplines. In the field of antenna
engineering, fractal geometry is useful to design small and multiband antenna and arrays …

Being incident and polarization angle insensitive are crucial characteristics of metamaterial
perfect absorbers due to the variety of incident signals. In the case of incident angles …

Future Internet of Things (IoT) devices are expected to be fully ubiquitous. To achieve this
vision, a new generation of IoT devices needs to be developed, which can operate …

This paper provides an overview of fractal antennas and metasurfaces, exploring their
design principles, performance, and applications. Fractal antennas, incorporating self …

Metasurface (MS) absorbers with polarization-insensitivity and wide-angle reception
features have attracted much attention due to their unique absorption property. A …

In this work, we propose an ultra-wideband and wide-angle optically transparent flexible
metamaterial absorber (MMA), consisting of a multilayered structure with a transparent …

Soil moisture monitoring and irrigation scheduling are essential parameters in farming
efficiency. Internet-of-Things (IoT) technology is a promising solution for automating …

A dual-band metasurface (MS) with a wide reception angle operating at Wi-Fi bands (2.4
GHz and 5.4 GHz) is presented for electromagnetic (EM) energy harvesting applications …

Controlling water salinity plays a key role in farming efficiency. Current sensors are mostly
expensive and need regular maintenance. In addition, they require electrical connections or …

Continuous and accurate sensing of water content in soil is an essential and useful measure
in the agriculture industry. Traditional sensors developed to perform this task suffer from …