DESIGNING HIGH GAIN REFLECT ARRAY ANTENNA WITH FRACTAL STRUCTURES

Year 2022, Volume: 6 Issue: 3, 408 - 415, 31.12.2022

Bülent Urul

https://doi.org/10.46519/ij3dptdi.1147283

Abstract

In this study, it is aimed to design a high-gain reflect array antenna with fractal structures. For this purpose, firstly, the second iteration of the hexagonal fractal structure was designed and the reflect array was used as the reflective unit cell on the antenna. However, since a sufficient phase response could not be obtained and accordingly missing unit cells remained on the antenna, this unit cell was modified and a new reflective unit cell was designed. A new reflective array antenna has been designed with the hexagonal unit cell and the unit cell, which is a modified version of mentioned unit cell. On this designed antenna, there is no missing unit cell without phase response. Accordingly, the gain of the new antenna increased from 21.6 dBi to .23.1 dBi, increasing by 1.5 dBi compared to the antenna built with classical hexagonal unit cells. This result shows that the applied method is successful.

Keywords

Fractal Structures, Reflect Array Antenna, Antenna Gain.

FRAKTAL YAPILAR İLE YÜKSEK KAZANÇLI YANSITICI DİZİ ANTEN TASARIMI

Abstract

Bu çalışmada fraktal yapılarla oluşturulan yüksek kazançlı yansıtıcı dizi anten tasarımı yapmak hedeflenmiştir. Bunun için ilk olarak altıgen fraktal yapısının 2. iterasyonu tasarlanmış ve yansıtıcı dizi anten de yansıtıcı birim hücre olarak kullanılmıştır. Fakat yeterli bir faz cevabı elde edilemediğinden ve buna bağlı olarak anten üzerinde eksik birim hücrelerin kalmasından dolayı bu birim hücre modifiye edilerek yeni bir yansıtıcı birim hücre tasarlanmıştır. Altıgen birim hücre ve bu birim hücrenin modifiye hali olan birim hücreler ile yeni bir yansıtıcı dizi anten tasarımı yapılmıştır. Tasarlanan bu antenin üzerinde faz karşılığı olmayan eksik birim hücre kalmamıştır. Buna göre yeni antenin kazancı 21,6 dBi’dan, 23,1 dBi’ya yükselerek klasik altıgen birim hücrelerle oluşturulan antene göre 1,5 dBi artmıştır. Bu sonuç uygulanan yöntemin başarılı olduğunu ortaya koymaktadır.

Keywords

Fraktal Yapılar, Yansıtıcı Dizi Anten, Anten Kazancı., Fractal Structures, Reflect Array Antenna, Antenna Gain.

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