Improving the performance of array antenna structure based on real time delay with the help of fiber under modulation instability phenomenon

Zarezadeh, Esmaeil; Shirpaei, Ali; Alavi, Seyed Moin

Improving the performance of array antenna structure based on real time delay with the help of fiber under modulation instability phenomenon

Document Type : Original Article

Authors

Esmaeil zarezadeh ¹

Ali shirpaei ²

Seyed Moin Alavi ³

¹ Assistant Professor of electronic, Faculty of Basic Sciences, Khatam Al-Anbia Air Defense University, Tehran, Iran

² Assistant Professor of Physics, Faculty of Basic Sciences, Khatam Al-Anbia Air Defense University, Tehran, Iran

³ Master's Degree in Electrical Engineering from Amirkabir University

Abstract

The use of broadband pulses in structures based on phase shift antenna arrays is difficult due to the Luchi beam phenomenon. Therefore, as an alternative method, structures based on the real time delay of photonic microwave technology are used, which increases the usable bandwidth. However, the use of conventional photonic microwave technology and the conditions related to its modulator, itself causes the limitation of bandwidth and pulse level. In this article, the performance of a real time delay structure has been improved by using a special type of optical fibers under the physical phenomenon of modulation instability, which increases the pulse power level and bandwidth. In fact, the performance improvement of a modulator with a single laser (carrier signal) was extended to the frequency comb mode.

Keywords

Array antennas

real time delay

photonic microwave modulator

optical fiber

modulation instability