Abstract-This letter presents a high gain slot antenna for K-band non-contact measurement systems. The proposed antenna consists of a slot antenna on a grooved metal structure with a single frequency selective surface. In addition to a high-gain characteristic, a reduced size is strongly required for easy embedding. These features are the main objectives of this antenna design. To achieve these two objectives, an optimization procedure, based on a global algorithm, is used. Both simulation and optimization are carried out by means a full-wave electromagnetic simulation tool. Eventually, to validate the proposed design, a prototype of the antenna has been manufactured and tested. More than 15 dB of gain is measured over the operating frequency range, while optimal gain can reach 17 dB at frequency 25.5 GHz. These characteristics make this antenna very suitable for non-contact measurement, i.e., radar systems.

No abstract

No abstract

No abstract

International audienceA compact wideband monopole antenna for mobile and wireless monitoring applications is presented. The proposed antenna will be implemented in a wireless system devoted to remote monitoring water and wastewater applications. The antenna is mainly designed to operate within the frequency range of 700-2700 MHz covering different mobile and wireless frequency bands with a return loss less than -6dB. Omnidirectional radiation pattern and improved radiation performances are very suitable. An optimization process based on global algorithm has been used to achieve the design goals. The design of the proposed antenna is carried out using optimization and simulation tools of full-wave electromagnetic simulation software. A prototype of the proposed antenna was manufactured and tested in order to verify the performances of the antenna including in the real environment conditions. © 2016 European Association of Antennas and Propagation