Title :
Use of closely-spaced height diversity antennas to alleviate the effects of low angle non-absorptive fading on satellite slant paths
Author :
Bryont, D.L. ; Allnutt, J.E.
Author_Institution :
British Telecom Int., London, UK
fDate :
3/29/1990 12:00:00 AM
Abstract :
Preliminary results are presented of a height diversity experiment with closely separated antennas operating at an elevation angle of 3.3 degrees in the 11 GHz satellite band. Scintillation and atmospheric multipath effects are shown to be alleviated with an antenna separation of 16.5 metres. The technique is directly relevant to the expansion of satellite services using small antennas (e.g. IBS or VSAT) at low elevation angles, particularly in urban environments.
Keywords :
diversity reception; fading; microwave links; radiowave propagation; satellite relay systems; tropospheric electromagnetic wave propagation; 11 GHz; 16.5 m; SHF; antenna separation; atmospheric multipath effects; closely spaced antennas; fading effects reduction; height diversity antennas; low angle nonabsorptive fading; low elevation angles; satellite slant paths; urban environments;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19900311
