Title :
Cobwebb Antennas Applied on HF Communications
Author :
Zhang, D.B. ; Deng, Zh L. ; Huang, J.-M.
Author_Institution :
Sch. of Electron. Eng., Beijing Univ. of Posts & Telecommun., Beijing, China
Abstract :
In order to build Timely and effective communication in HF blind-spot (20-100KM), Cobwebb folded dipole antenna was designed as well as matching circuitry. In this paper, antenna structure and antenna electric-height are simulated and amended in the use of electromagnetic simulation software FEKO. Antenna radiation patterns in the different electric-height are given. It is clear that the proper electrical antenna height from the ground is λ/4 in the simulation and actual test results and maximum gain is got in the direction of the vertical incidence (NVIS-Near Vertical Incidence Sky wave). The actual field test, Cobwebb antenna with the FT-450 HF radio work well in blind-spot, in addition to Cobwebb antenna does not require the land to build a complex network system, set up evacuation quickly, very suitable for tactical and strategic HF communications.
Keywords :
HF antennas; HF radio propagation; antenna radiation patterns; complex networks; dipole antennas; Cobwebb folded dipole antenna; FT-450 HF radio work; HF blind-spot; HF communications; antenna radiation patterns; antenna structure; complex network system; electrical antenna height; electromagnetic simulation software FEKO; matching circuitry; vertical incidence direction; Dipole antennas; Impedance; Mathematical model; Power transmission lines; Satellite communication; Transmission line antennas;
Conference_Titel :
Wireless Communications Networking and Mobile Computing (WiCOM), 2010 6th International Conference on
Conference_Location :
Chengdu
Print_ISBN :
978-1-4244-3708-5
Electronic_ISBN :
978-1-4244-3709-2
DOI :
10.1109/WICOM.2010.5600737
