Dergiler / Iğdır Üniversitesi Fen Bilimleri Enstitüsü Dergisi / 2018 / Cilt: 8 - Sayı: 4
X Band Radar Sistemleri için Mikroşerit Yürüyen Dalga Anten Tasarımı
- Sayfa
- 87–96
- DOI
- —
Özet
Günümüzde, telekomünikasyon ve askeri uygulamalarda ayarlanabilir anten dizilerinin kullanımı gittikçe
Abstract
Reconfigurable antennas have an increasing demand in communication systems due to theircompatibility with variable system demands, environment conditions. With respect to their application need dueto their ability of changing their, propagation pattern, frequency and polarization characteristics reconfigurableantenna arrays have a high interest in military applications. In human detection and scanning applications, theRADAR system requires a narrow beam pattern with fast steering ability. Thus, basic radar functions such aspattern control, scanning, targeting has a critical importance. Pattern controllable systems commonly requirescomplex elements with high cost and large array antenna structures. Herein, in order to reduce the complexityand cost Traveling wave antenna designs are studied. Traveling wave antenna design is based on the traditionalmicrostrip array antennas. By using Traveling wave antenna model in RADAR arrays, a small increase in frequencyband can be provided by which an effective continues scanning can be achieved. By increasing the frequency of thearray element, it is possible to steer the pattern of array for providing a scanning in time, range and direction axis.Similarly, by changing the frequency values it is possible to optimize the range and propagation pattern of the array.Herein, design of a frequency depended pattern steering Traveling wave antenna in operation band of 9.4-10.8 GHzhad been presented. The gain of the proposed antenna is around 8-13 dB and the main beam direction is steerablewith the range of 00 - 270.