In this paper we study the possibility of utilizing a loaded wire medium as an artificial material for beam shaping element in base station antenna applications. The wires in the lattice are loaded with a proper capacitive impedance to come up with a structure effectively operating as a dielectric lens at the UMTS (Universal Mobile Telecommunications System) frequency range. It is proven with f...

This is a conference extension of the paper ‘Investigation on mature storm cloud’s electric field using long airborne antennas’. The use vertical antennas (including VEDs—Vertical Electric Dipoles), lifted up by aerostats to high altitudes without being anchored ground, presents numerous advantages in comparison with large terrestrial VLF (Very Low Frequency) antenna structures. A slow-moving f...

In this work, we introduce a conceptually new approach for designing frequency reconfigurable wire antennas based on the use of multi-layered wrapping metasurfaces. Specifically, demonstrate that complex-valued input impedance antenna can be tailored by engineering electromagnetic characteristics coating metasurface and discuss how effect exploited achieving wide-band reconfigurability. We repo...

We report on the exchange of orbital angular momentum between an electromagnetic microwave and a macroscopic object. Using a quadrupole wire antenna at frequency f = 870 MHz, we induce a torque on a suspended copper strip. The induced torque on the strip is of the order of 10 Nm. A linear dependence of the acceleration of the strip on the radiated power, up to 8.10 °/s2, is observed and rotatio...

Antenna design often requires dealing with multiple constraints in the requirements, and designs can be modeled as constrained optimization problems (COPs). However, are usually very strange, then feasible solutions hard to found. At same time, robustness for antenna is an important consideration well. To solve above issues, combination of differential evolution algorithm (DE) 3D-printing techn...