Study the Fluctuating Dynamics of Radiation patterns genrated by communication satellite antennas Parabolic Reflector as a Conformed Case
Volume 7 Issue 1 2013
Download| Author(s): | M. Ayub Khan Yousuf Zai, Arshad Hussain, Faisal Ahmed Khan Afridi |
|---|---|
| Abstract | The signal power is radiated into a substantial angular region of atmosphere by the transmitting antenna and only a small fraction is intercepted by the receiving antenna. The proper knowledge of antennas is essential for the communication scientists to evaluate the performance of a communication system. The satellite communication experts need to be able to launch radio quanta over a very limited range of frequencies and hence quantum energies. In some cases they wish to launch the quanta particularly in a certain direction, towards a known location where they are to be received. They do all these things by means of a structure called an antenna. Antennas are devices used either for the emission or for the reception of radio quanta. An emitting antenna is a device supplied by an electric power generated at a certain frequency and radiation of waves in space. According to several different physical mechanisms observed for the propagation of radio waves that are given below: free space propagation or line of sight propagation, reflection, transmission, diffraction, scattering and wave guiding. In this communication the types of satellite antennas for emitting and receiving power have been discussed that depend on their intended use as well as on the frequency and they include (i) Horn antennas (ii) paraboloid reflector etc. Some parametric characteristics such as (i) radiation patterns, (ii) the power gain, (iii) the directivity, (iv) the beam width, (v) the aperture, (vi) the polarization, (v) their impedance with their model equations are also mentioned. The modeling of beam widths with aperture ratio effects and fluctuations have been illustrated. |
| Keywords | Satellite antennas, satellite communication, coherent properties, quantum energies, parametric characteristics, aperture ratio effects. |
| Year | 2013 |
| Volume | 7 |
| Issue | 1 |
| Type | Research paper, manuscript, article |
| Journal Name | Journal of Information & Communication Technology | Publisher Name | ILMA University | Jel Classification | - | DOI | - | ISSN no (E, Electronic) | 2075-7239 | ISSN no (P, Print) | 2415-0169 | Country | Pakistan | City | Karachi | Institution Type | University | Journal Type | Open Access | Manuscript Processing | Blind Peer Reviewed | Format | Paper Link | https://jict.ilmauniversity.edu.pk/journal/jict/7.1/1.pdf | Page | 1-9 |