Title :
Electrically small antenna for maximising transmission into HF ground waves
Author :
Lim, S. ; Choo, H. ; Rogers, R.L. ; Ling, H.
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Texas, Austin, TX, USA
Abstract :
A top-loaded, inductively-coupled, electrically small antenna is designed for HF ground wave transmission. A genetic algorithm is used to optimise the antenna parameters. Two prototype antennas have been built and the test results match well with simulations. Both antennas have an electrical size kr of 0.2, greater than 65% efficiency and transmission performance within 1 dB of a commercial whip.
Keywords :
HF antennas; helical antennas; 1 dB; HF ground waves; antenna parameters; electrically small antenna; genetic algorithm; inductively coupled antenna; prototype antennas; transmission performance;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20045888
