Research on planar antenna arrays

This paper presents the analytical and experimental works on coping with the popularity in wireless communications, especially in satellite communication. Firstly, the “image element” and “arc-shaped orthogonal feeding network" technologies are introduced for the single-band single-polarization antenna array design, the cross polarization is suppressed greatly and the antenna gain is improved. Moreover, an arbitrarily shaped planar array design technique is developed so that the antenna can be well conformal with the limited system space. Secondly, the high efficiency design of large scale antenna array in Ku band is introduced for single-band dual-polarizations antenna designs, including both active and passive array combination techniques. Thirdly, dual-band orthogonal-polarization technique is introduced and applied successfully in dual-band antenna array integrated designs, including linear and circular polarization, and then expanded to the multi-band multi-polarization array designs. Last, a digital beam forming array exhibits highly gain flatness in wide scan angle is presented, also, a novel simple yet accurate array calibration method is developed.