Simulation of Small Radio Telescope Antenna Parameters at Frequency of 1.42 GHz
Article Sidebar
Main Article Content
Abstract
The paper presents an overview of theoretical aspects of small radio telescope antenna parameters. The basic parameters include antenna beamwidth, antenna gain, aperture efficiency, and antenna temperature. These parameters should be carefully studied since they have vital effects on astronomical radio observations. The simulations of antenna parameters were carried out to assess the capability and the efficiency of small radio telescopes to observe a point source at a specific frequency. Two-dimensional numerical simulations of a uniform circular aperture antenna are implemented at different radii. The small diameter values are chosen to be varied between (1-10) m. This study focuses on a small radio telescope with a diameter of 3 m since this telescope is very common in the world. The simulated results of this study illustrated that the power pattern of a 3 m antenna has a half-power beamwidth of approximately 5 degrees. Also, the maximum peak antenna temperature is estimated to be more than 3000 K. All of these results were in good agreement with observations of the neutral hydrogen spectral line at the frequency of 1.42 GHz using a small radio telescope.
Article Details
This work is licensed under a Creative Commons Attribution 4.0 International License.
© 2023 The Author(s). Published by College of Science, University of Baghdad. This is an open-access article distributed under the terms of the Creative Commons Attribution 4.0 International License.
References
Balanis C.A., Antenna theory: analysis and design. 2015: John wiley & sons.
Jallod U.E., Calibration of BURT Parameters by using 21 cm Hydrogen Line Emission Observation from the Sun, Thesis, University of Baghdad, 2020.
Rathaur A.S., Design and simulation of Different Types Antenna using Matlab. Journal of Science Research Engineering & Technology (IJSRET), 2017. 6(6): pp. 589-600.
Condon J.J. and Ransom S.M., Essential radio astronomy. 2016: Princeton University Press.
Yeap K.H., Loh M.C., Tham C.Y., Yiam C.Y., Yeong K.C., and Lai K.C., Analysis of reflector antennas in radio telescopes. Advanced Electromagnetics, 2016. 5(3): pp. 32-38.
Jankowski-Mihułowicz P., Lichoń W., and Węglarski M., Numerical model of directional radiation pattern based on primary antenna parameters. International Journal of Electronics Telecommunications, 2015. 61(2): pp. 191-197.
Leis J.W., Communication systems principles using MATLAB. 2018: John Wiley & Sons.
Yurduseven O. and Yurduseven O., Compact parabolic reflector antenna design with cosecant-squared radiation pattern. Microwaves, Radar and Remote Sensing Symposium, 2011: pp. 382-385.
Sandip M. and Anil R., Computational Electromagnetics: Techniques and Applications. International Journal for Research in Applied Science & Engineering Technology (IJRASET), 2017. 5(X1): pp. 121-125.
Kildal P.S., Foundations of antenna engineering: a unified approach for line-of-sight and multipath. 2015: Artech House.
Daly C.J., Nuteson T.W., and Rao N.A., The spatially averaged electric field in the near field and far field of a circular aperture. IEEE Transactions on Antennas Propagation, 2003. 51(4): pp. 700-711.
Michael A.O., On the antenna gain formula. Int. J. Appl. Sci. Technol, 2013. 3(1): pp. 43-49.
Jallod U.E., Simulation of Fraunhofer Diffraction for Plane Waves using Different Apertures. Iraqi Journal of Science, 2015. 56(2A): pp. 1198-1207.
Merabtine N., Boualleg A., and Benslama M., Analysis of radiation patterns and feed illumination of the reflector antenna using the physical and geometrical optics. Semiconductor Physics Quantum Electronics Optoelectronics, 2006. 9(2): pp. 53-57.
Marr J.M., Snell R.L., and Kurtz S.E., Fundamentals of radio astronomy: observational methods. Vol. 13. 2015: CRC Press.
Singh A., Loonker D., and Banerji P., Fourier-Bessel transform for tempered Boehmians. Int. Journal of Math. Analysis, 2010. 4(45): pp. 2199-2210.
Rohlfs K. and Wilson T.L., Tools of radio astronomy. 2013: Springer Science & Business Media.
Chang H.-P., Sarkar T.K., and Pereira-Filho O.M., Antenna pattern synthesis utilizing spherical Bessel functions. IEEE Transactions on Antennas Propagation, 2000. 48(6): pp. 853-859.
Shaw J.A., Radiometry and the Friis transmission equation. American journal of physics, 2013. 81(1): pp. 33-37.
Yu A., Yang F., Elsherbeni A.Z., Huang J., and Rahmat‐Samii Y., Aperture efficiency analysis of reflectarray antennas. Microwave Optical Technology Letters, 2010. 52(2): pp. 364-372.
Gustafsson M. and Capek M., Maximum gain, effective area, and directivity. IEEE Transactions on Antennas Propagation, 2019. 67(8): pp. 5282-5293.
Schmidt J.D. Numerical simulation of optical wave propagation: With examples in MATLAB. 2010. SPIE.
Voelz D.G., Computational fourier optics: a MATLAB tutorial. 2011: SPIE press Bellingham, Washington.
Jallod U.E. and Abood K.M. Characteristics measurement of Baghdad University radio telescope for hydrogen emission line. in AIP Conference Proceedings. 2019. AIP Publishing LLC.