Title :
Efficiency Treatment of Two Closely Spaced Dipoles by Characteristic Mode Theory
Author :
Hamouz, Pavel ; Hazdra, Pavel ; Polivka, Milan
Author_Institution :
Dept. of Electromagn. Field, Czech Tech. Univ., Prague
Abstract :
The two closely spaced dipoles exhibit frequency narrow deep decline of radiation efficiency. This phenomenon is treated by theory of characteristic modes (TCM). Modal currents excited close to the resonant frequencies are determined, antenna and transmission line modes are identified, comparison of their relative amplitudes, and corresponding modal fields and radiated power are provided. Radiation efficiency calculated from TCM approach is compared with the results acquired by MoM software IE3D.
Keywords :
antenna radiation patterns; antenna theory; dipole antenna arrays; transmission line theory; MoM software IE3D; antenna mode; characteristic mode theory; radiation efficiency; resonant frequencies; transmission line mode; two closely spaced dipoles; Dipole antennas; Eigenvalues and eigenfunctions; Integral equations; Matrix decomposition; Moment methods; Power transmission lines; Resonant frequency; Transmission line antennas; Transmission line matrix methods; Transmission line theory;
Conference_Titel :
Microwave Conference, 2008. EuMC 2008. 38th European
Conference_Location :
Amsterdam
Print_ISBN :
978-2-87487-006-4
DOI :
10.1109/EUMC.2008.4751690
