3D Wide-Angle Impedance Matching for X-Band Phased Array

The design of 3D Wide-angle impedance matching is presented in this paper. The design of an X-band array element, further illustrating the use of 3D WAIMs, is first detailed. This X-band element presents limited scanning performance which is improved thanks to the addition of WAIMs. The need of 3D WAIMs is justified through an analytical model. Finally, the antenna design is presented with the optimized 3D WAIM placed above the X-band element. The improvements in scanning performance are analysed, through the active reflection coefficient and radiation patterns.