Wide beam reflector antenna with cosecant-squared pattern

: Hadi Ahmadabadi, Sadjad Mallahzadeh, Abdorreza Torabi

Publisher: ELSEVIER GMBH

: 2020

: AEU international journal of electronics and communication

: AEU-INT J ELECTRON C

: UNSP 153064

: 116

: 8

: 1434-8411

: 1618-0399

DOI: https://doi.org/10.1016/j.aeue.2020.153064

In this paper, a reflector antenna with a cosecant-squared and wide beam pattern is presented. The cosecant-squared antennas with different structures were reported to achieve a pencil beam area in azimuth direction but in this paper, a cosecant-squared antenna with a half beam angle of 33 degrees was successfully synthesised. Such a wide beam pattern at the azimuth plane provides an appropriate coverage area for detection. A particle swarm optimization algorithm is used to synthesis the reflector surface of the antenna with respect to obtaining the desired cosecant-squared pattern. Tuning and finalizing the antenna structure have been done by using numerical full wave simulation. Finally, the designed antenna has been fabricated and tested in the far-field measurement setup. There is a good agreement between simulation and measurement results.