Title :
An active surface for large reflector antennas
Author :
Orfel, A. ; Morsiani, Marco ; Zacchiroli, Giampaolo ; Maccaferri, Giuseppe ; Roda, Juri ; Fiocchi, Franco
Author_Institution :
Istituto di Radioastronomia, Consiglio Nazionale delle Ricerche, Bologna, Italy
Abstract :
We present a solution adopted for the Noto antenna (Sicily) in order to overcome the degradation of antenna efficiency due to the gravitational deformation of the structure of large antennas. This new setup allows a substantial increase in the operating frequency, and eliminates the dependence of the antenna efficiency on elevation.
Keywords :
radiotelescopes; reflector antennas; Noto antenna; gravitational deformation; reflector antenna; Antenna measurements; Antennas and propagation; Extraterrestrial measurements; Frequency; Gravity; Mirrors; Observatories; Optical surface waves; Reflector antennas; Shape;
Journal_Title :
Antennas and Propagation Magazine, IEEE
DOI :
10.1109/MAP.2004.1373995
