Title :
Small antenna configurations: implementation promises and problems
Author :
Grimes, Craig A. ; Grimes, Dale M.
Author_Institution :
Dept. of Electr. Eng., Kentucky Univ., Lexington, KY, USA
Abstract :
Ensemble antennas, composed of matched TE and TM sources, offer the potential for efficient radiation from an electrically small structure. Difficulties in the implementation of ensemble antennas include control of unwanted higher order modes and the large differences between the input impedances of TE and TM sources. The significance and control of higher order modes for TE and TM radiators are discussed. Input impedances of the individual radiators are considered in terms of source input impedances. Radiative properties of matched pairs of parallel dipoles, matched orthogonal dipoles, and matched pairs of dipole-quadrupole TE or TM sources with linear and circular polarizations are considered
Keywords :
antenna radiation patterns; dipole antennas; electric impedance; electromagnetic wave polarisation; TE radiators; TM radiators; antenna radiation patterns; circular polarization; electrically small structure; ensemble antennas; higher order modes control; linear polarization; matched dipole-quadrupole TE sources; matched dipole-quadrupole TM sources; matched orthogonal dipoles; parallel dipoles; radiative properties; small antenna configurations; source input impedance; Azimuth; Conductors; Dipole antennas; Directive antennas; Erbium; Impedance; Polarization; Radar antennas; Reactive power; Tellurium;
Conference_Titel :
Electromagnetic Compatibility, 1995. Symposium Record., 1995 IEEE International Symposium on
Conference_Location :
Atlanta, GA
Print_ISBN :
0-7803-3608-9
DOI :
10.1109/ISEMC.1995.523525
