A study on the power divider of the microstrip antenna for identification friend or foe radar

Abstract

The final aim of the present study is the design on the power divider of the microstrip antenna for 1.03~1.09GHz IFF(Identification Friend or Foe) radar. First, in order to achieve the proper side lobe level, it is proposed nonuniform amplitude. For the purpose of supplying power to each array element, power divider which consists of 180 degree hybrid ring power divider and T-junction power divider is designed. Here 180 degree hybrid ring power divider is necessary for generating both sum and delta channel of IFF(Identification Friend or Foe) radar, while T-junction power divider is necessary to control power and decide radiation pattern. When compared with the required design specifications, it is expected that the present antenna can be applied directly to IFF radar. © 2011 Springer-Verlag.