Dirk I. L. DE VILLIERS


Noise Temperature Approximations for Offset Gregorian Reflector Systems
Robert LEHMENSIEK Dirk I. L. DE VILLIERS 
Publication:   
Publication Date: 2018/02/01
Vol. E101-B  No. 2  pp. 332-339
Type of Manuscript:  Special Section PAPER (Special Section on Recent Progress in Antennas and Propagation in Conjunction with Main Topics of ISAP2016)
Category: Antennas
Keyword: 
noise temperatureradio astronomyreceiving sensitivityreflector antennas
 Summary | Full Text:PDF(3.5MB)

Effects of Diffraction and Feed Pattern Variation in Shaped Offset Gregorian Reflectors
Dirk I. L. DE VILLIERS Robert LEHMENSIEK Marianna V. IVASHINA 
Publication:   
Publication Date: 2018/02/01
Vol. E101-B  No. 2  pp. 316-323
Type of Manuscript:  Special Section PAPER (Special Section on Recent Progress in Antennas and Propagation in Conjunction with Main Topics of ISAP2016)
Category: Antennas
Keyword: 
aperture efficiencyreflector antennasradio astronomy
 Summary | Full Text:PDF(2.8MB)