Sample Sidebar Module

This is a sample module published to the sidebar_top position, using the -sidebar module class suffix. There is also a sidebar_bottom position below the menu.

Sample Sidebar Module

This is a sample module published to the sidebar_bottom position, using the -sidebar module class suffix. There is also a sidebar_top position below the search.
قسم الفلك والفضاء
زينب عبد الرحمن جبار

Email: Abdulaimi1991@gmail.com 



abstract:

In this paper astudy of two parameter(depth (d) anddiameter (D)) for geometricparabolic antenna. The antenna focal length (F) for five different values of (D) (200,300,500,700,900 cm) is calculated .also the power pattern antenna for these different antennasare also calculated and plotted. The half power beam width (HPBW) for each pattern is calculated. The angular resolving power (Ѳ) for each antenna is calculated which gives concluded that, for smaller (Ѳ),(D) must be bigger.Note that the frequency used in this paper is the frequency of a hydrogen atom  (1.4 GHz) .