Research On Multi-polarization Array Antenna And Beam Synthesis Technology

The multi-polar array antenna can fully obtain the polarization information and the spatial information of the spatial electromagnetic signal.Arbitrary polarization beam synthesis and two-dimensional wide-angle scanning are two hot issues in the field of polarization-sensitive arrays.Under the above background,this paper designs and processes a new type of multi-polarized antenna element,which has the advantages of low profile and high stability.Based on the theory of array antenna,the theory of multi-polarized antenna beam synthesis is studied theoretically.The main contents include:1)A theoretical model of a tri-polar antenna element is established.Compared with the figure,the gain of the tri-polarized antenna element at the low-elevation far field is improved by more than 4.2 d B,especially in the horizontal direction,and the gain is increased by about 10 d B.2)The beam gain characteristics and beam scanning characteristics of the Z-polarized antenna array are mainly analyzed and optimized respectively.A beam with a certain gain is formed in the horizontal direction of the antenna array.For a 46×46 square array,the horizontal beam is Gain up to 35 d Bi.3)Ty?cal analysis and verification were performed using a 1×8 array model and a 4×4 array model.The results showed that for 1×8 The array can achieve a beam with a gain of 6.8 d Bi or more at a low ?tch angle;for a 4x4 array,a beam with a gain of 10.7 d Bi or more can be achieved at a low ?tch angle.The result of the study shows that for a three-polarized antenna array After optimizing the design of the excitation amplitude and phase of each port,the antenna gain of the antenna array at low ?tch angles is improved,which is advantageous for realizing two-dimensional wide-angle scanning...