Title :
The evaluation of total radiation Q based on modal approach
Author :
Capek, Miloslav ; Hazdra, Pavel ; Eichler, Jan ; Hamouz, Pavel ; Mazanek, Milos ; Sobotikova, Veronika
Author_Institution :
Dept. of Electromagn. Field, Czech Tech. Univ. in Prague, Prague, Czech Republic
Abstract :
The total Q of selected structures is to be calculated from the set of eigenmodes with associated eigen-energies and eigen-powers. Thanks to the analytical expression of these quantities, the procedure is highly accurate, respecting arbitrary current densities flowing along the radiating device. The electric field integral equation, Delaunay triangulation, method of moments, Rao-Wilton-Glisson basis function and the theory of characteristic modes constitute the underlying theoretical background. Calculation of the modal energies and Q factors enable us to study the effect of the radiating shape separately to the feeding. To outline some benefits of proposed method, the total radiation Q of a Huyghens source is calculated for several distances between a loop and an dipole.
Keywords :
MIMO communication; current density; dipole antenna arrays; eigenvalues and eigenfunctions; electric field integral equations; loop antennas; mesh generation; method of moments; modal analysis; Delaunay triangulation; Huyghens source calculation; MIMO antenna; Rao-Wilton-Glisson basis function; arbitrary current density; eigenenergy calculation; eigenmode calculation; eigenpower calculation; electric field integral equation; method of moment; modal energy approach; radiating shape effect; total radiation Q evaluation; Antenna theory; Educational institutions; Electromagnetics; Moment methods; Q factor; Antenna theory; Q factor; eigenvalues and eigenfunctions; electromagnetic theory;
Conference_Titel :
Antennas and Propagation (EUCAP), 2012 6th European Conference on
Conference_Location :
Prague
Print_ISBN :
978-1-4577-0918-0
Electronic_ISBN :
978-1-4577-0919-7
DOI :
10.1109/EuCAP.2012.6205873
