Title :
Novel antenna configurations for vehicle-borne NVIS applications
Author :
Murray, K.P. ; Austin, B.A.
Author_Institution :
Liverpool Univ., UK
Abstract :
HF (3-30 MHz) propagation still has an important role to play in certain communication scenarios. Of particular importance is the so-called near vertical incidence skywave (NVIS) mode of propagation where the ionosphere is utilized for relatively short-range communication. This paper describes the analysis of a number of vehicle-borne NVIS antenna configurations. The moment method derived technique of characteristic modes is employed. This allows the treatment of any vehicle-antenna combination as one, by computing a unique set of orthogonal currents which may then be optimized to yield the required radiation pattern for the NVIS mode
Keywords :
HF radio propagation; antenna radiation patterns; electric current; ionospheric electromagnetic wave propagation; loop antennas; method of moments; mobile antennas; vehicles; 3 to 30 MHz; HF propagation; antenna configurations; characteristic modes; ionosphere; loop antennas; moment method; near vertical incidence skywave; orthogonal currents; radiation pattern; short-range communication; vehicle-borne NVIS applications; whip antennas;
Conference_Titel :
Antennas and Propagation, 1995., Ninth International Conference on (Conf. Publ. No. 407)
Conference_Location :
Eindhoven
Print_ISBN :
0-85296-637-7
DOI :
10.1049/cp:19950340
