Correction to "Phase retrieval in the radio holography of reflector antennas and radio telescopes"

1985 ◽  
Vol 33 (12) ◽  
pp. 1419-1419 ◽  
Author(s):  
D. Morris
Keyword(s):  
Phase Retrieval ◽  
Radio Telescopes ◽  
Reflector Antennas ◽  
Radio Holography

Surface error measurements of large reflector antennas by phase retrieval holography—an application of extrapolation algorithm

1996 ◽  
Vol 79 (4) ◽  
pp. 104-114 ◽  
Author(s):  
Toshiyuki Nishibori ◽  
Hisashi Hirabayashi ◽  
Hideyuki Kobayashi ◽  
Yasuhiro Murata ◽  
Yutaka Shimawaki ◽  
...  
Keyword(s):  
Phase Retrieval ◽  
Reflector Antennas ◽  
Surface Error ◽  
Extrapolation Algorithm

Cryogenic 2–13 GHz Eleven Feed for Reflector Antennas in Future Wideband Radio Telescopes

2011 ◽  
Vol 59 (6) ◽  
pp. 1918-1934 ◽  
Author(s):  
Jian Yang ◽  
Miroslav Pantaleev ◽  
Per-Simon Kildal ◽  
Benjamin Klein ◽  
Yogesh Karandikar ◽  
...  
Keyword(s):  
Radio Telescopes ◽  
Reflector Antennas ◽  
Wideband Radio

scholarly journals Optimization of reflector antennas in radio telescopes

2017 ◽  
Vol 13 (3) ◽  
Author(s):  
Kim Ho Yeap ◽  
Koon Chun Lai ◽  
Kung Chuang Ting ◽  
Peh Chiong Teh ◽  
Humaira Nisar ◽  
...  
Keyword(s):  
Focal Length ◽  
Diameter Ratio ◽  
Signal Frequency ◽  
Design Parameters ◽  
Physical Optics ◽  
Radio Telescopes ◽  
Reflector Antennas ◽  
Radiation Characteristics ◽  
Optimum Performance ◽  
Aperture Efficiency

We present an analysis on the performance of Cassegrain reflector antennas. In our study, we have adopted the design parameters for the Cassegrain configuration used in the Atacama Large Millimeter Array (ALMA) project. We have adjusted the focal-length-to-diameter ratio f/D of the primary reflector to investigate the optimum performance of the antenna. In our study, signal frequency at the high edge of ALMA band 1, i.e. 45 GHz has been selected. The results obtained from the physical optics simulation show that the aperture efficiency of the antenna is at its optimum (i.e. 80.36%) when f/D ranges from 0.5 to 0.6. The radiation characteristics at this range of ratio are found to be similar. The radius of the secondary reflector and edge taper Te which correspond to the optimum aperture efficiencies ranges from 371 mm to 372 mm and 10.64 dB to 10.75 dB, respectively.

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