The simulated results of the Interplanetary Scintillation antenna system

sha li, National Astronomical Observatories, Chinese Academy of Sciences

Interplanetary scintillation (IPS) remote-sensing observation provides a view of the solar wind covering a wide range of heliographic latitudes and heliocentric distances from the Sun between ~0.1 AU and 3.0 AU. It is used to study the development of solar transients and the solar wind while propagating out. Now, in China, a new IPS telescope will be established in recent years, three 140m*50m parabolic cylindrical antenna will be set in the main site. The observing frequency is at 327MHz and 654MHz, the feed array is located in the focal plane. A type of the microstrip antenna is presented. The return loss of this kind of feed is enhanced by optimizing the size of the feed line and the reflector, the following work is to choose he number of the feeds and find a proper way to get the maximum gain of the whole antenna system.