prof. Ing. Jan Macháč, DrSc.

The work is aimed at investigation and design of high frequency circuits based on a microstrip line designed on a substrate of artificial dielectric material. This line shows high effective permittivity, so it is possible to substantially reduce circuit dimensions. Such circuits are applicable even in integrated structures. http://elmag.org/cs/profile-main/88

The work is aimed at investigation and design of antennas working with leaky wave – travelling wave. The antennas are designed on substrate integrated waveguide and are able to steer the main radiating beam by changing frequency. http://elmag.org/cs/profile-main/88

The work is aimed at investigation and design of artificial material structures that show properties not known in natural materials. Metamaterials are created by a periodic system, or by a stochastic system of particular elements – resonators. The target is to create material with isotropic response, i.e., material with properties not depending on a propagating wave direction. Next area is an investigation of active metamaterials that are created by particular cells with active transistor circuits. Such structures can compensate material losses or its dispersion. http://elmag.org/cs/profile-main/88

The work is aimed at investigation and design of artificial material structures that show properties not known in natural materials. Metamaterials are created by a periodic system, or by a stochastic system of particular elements – resonators. The target is to create material with isotropic response, i.e., material with properties not depending on a propagating wave direction. Next area is an investigation of active metamaterials that are created by particular cells with active transistor circuits. Such structures can compensate material losses or its dispersion. http://elmag.org/cs/profile-main/88

The work is aimed at investigation and design of general periodical structures. The periodicity can be in one direction – transmission line/electrical circuits, two or three dimensions – volumetric artificial materials, surfaces. The aim is to obtain effective parameters describing propagation of electromagnetic waves in these structures – tensors of permittivity, permeability. Studied structures can show behavior not known in natural materials – surface impedance, permittivity, permeability, conductivity. http://elmag.org/cs/profile-main/88

The work is aimed at investigation and design of general periodical structures. The periodicity can be in one direction – transmission line/electrical circuits, two or three dimensions – volumetric artificial materials, surfaces. The aim is to obtain effective parameters describing propagation of electromagnetic waves in these structures – tensors of permittivity, permeability. Studied structures can show behavior not known in natural materials – surface impedance, permittivity, permeability, conductivity. http://elmag.org/cs/profile-main/88