Title :
The intelligent quadrifilar helix antenna for mobile satellite communications
Author :
Leach, Steve M. ; Agius, Andreas A. ; Saunders, Simon R.
Author_Institution :
CCSR, Surrey Univ., Guildford, UK
Abstract :
This paper details the concept of the intelligent quadrifilar helix antenna (I-QHA) as an antenna for mobile satellite communications. The main advantage of the I-QHA is the potential diversity gain of up to 14 dB in heavily shadowed environments, which may be obtained by intelligent combining of the elements of the antenna. The I-QHA may have multiband or multimode capabilities enabling it to operate in both satellite and terrestrial mobile communications environments. The adaptive matching component of the I-QHA not only matches the antenna to different frequency bands or sub-bands, but may also counter the detuning effects caused by the user
Keywords :
adaptive antenna arrays; diversity reception; helical antennas; mobile antennas; mobile satellite communication; receiving antennas; adaptive matching component; detuning effects; diversity gain; heavily shadowed environments; intelligent quadrifilar helix antenna; mobile satellite communications; mobile terminals; multiband capability; multimode capability; Adaptive arrays; Antenna accessories; Artificial satellites; Diversity methods; Diversity reception; Helical antennas; Mobile antennas; Mobile communication; Satellite antennas; Satellite communication;
Conference_Titel :
Aerospace Conference Proceedings, 2000 IEEE
Conference_Location :
Big Sky, MT
Print_ISBN :
0-7803-5846-5
DOI :
10.1109/AERO.2000.878487
