Title :
Endfire radiation characteristics of HF horizontal dipoles near the Earth´s surface
Author :
David, Richard J., Jr. ; Wheless, W. Perry, Jr.
Author_Institution :
Dept. of Electr. Eng., Alabama Univ., Tuscaloosa, AL, USA
Abstract :
Using a variety of computed radiation pattern profiles and a limited measurements program, the authors document some characteristics of endfire radiation from low-elevation horizontal wire dipole antennas. The numerical electromagnetics code (NEC) is used to investigate radiation pattern profiles selected to show the features of the endfire radiation. The on-axis field predicted from NEC is compared to measured values for an 18.1 MHz λ/2 dipole at several heights above real ground to illustrate the reliability of the predictions of the code
Keywords :
antenna radiation patterns; dipole antennas; integral equations; 3 to 30 MHz; Earth surface; HF horizontal dipoles; endfire radiation; integral equations; low-elevation horizontal wire dipole antennas; numerical electromagnetics code; on-axis field; radiation pattern profiles; Antenna measurements; Antenna radiation patterns; Dipole antennas; Earth; Electromagnetic radiation; Electromagnetic wave polarization; Hafnium; Impedance; National electric code; Receiving antennas;
Conference_Titel :
Southeastcon '92, Proceedings., IEEE
Conference_Location :
Birmingham, AL
Print_ISBN :
0-7803-0494-2
DOI :
10.1109/SECON.1992.202360
