Title :
Effect of support strut diffraction on reflector surface profile assessment
Author :
Kerbyson, P. ; Anderson, A.P. ; Bennett, J.C.
Author_Institution :
University of Sheffield, Department of Electronic & Electrical Engineering, Sheffield, UK
Abstract :
The phase-imaging properties of microwave holographic processing are used to provide an inward-looking reconstruction of support strut diffraction and its effect on reflector surface profile assessment. Measured near-field data are employed to illustrate the contribution made by the support strut geometry to the apparent profile error for a 2.5 m reflector antenna operating at 10 GHz. The relative significance of real profile errors and those deriving from strut effects are studied by using a diffraction model. It is concluded that certain configurations of support struts can give rise to significant modification of the effective profile error distribution.
Keywords :
antenna theory; microwave antennas; microwave holography; reflector antennas; 10 GHz; 2.5 m; diffraction model; microwave holographic processing; near-field data; phase-imaging properties; profile errors; reflector antenna; reflector surface profile assessment; support strut diffraction;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19870102
