Research On Polarization Reconfigurable Array Antenna Based On MMPTE

Circularly polarized antennas can receive incoming waves of multiple polarizations,while circularly polarized beams can be received by antennas of multiple polarizations.Polarized reconfigurable antennas are compared to circularly polarized antennas in this respect.The advantages are more obvious.Patch antennas have the advantages of small size,low cost,easy processing,firmness and reliability.They are widely used in carrier conformal and other aspects.At the same time,because of its diversified performance and the characteristics of integration with active devices and circuits,it is one A very important antenna form;at the same time,compared to a single antenna,the array antenna has the advantages of increasing the radiation gain and eliminating the interference of the co-channel.Therefore,the microstrip array antenna is easy to popularize because of its efficient transmission efficiency,ideal frequency utilization And mass production and other characteristics,more and more are used in wireless transmission systems.This paper mainly conducts the following research:1.Design a dual-frequency circularly polarized antenna array that works in the K/Ka band.The antenna array is a coplanar antenna array for transmitting and receiving.It has the function of realizing circular polarization and reconfigurable,and it is required to meet the conditions as much as possible.It may have the characteristics of simple structure,small size and easy processing.At the same time,based on the unconstrained maximum power transmission efficiency(MMPTE)method,the array meets the performance requirements of dual-band circular polarization reconfigurability and wide scanning angle.2.This paper introduces a design method based on the unconstrained method of Maximum Power Transmission Efficiency(MMPTE)to realize polarization-reconfigurable antenna arrays.By introducing a polarization-control-receiving antenna placed in the far field region,the array to be designed and the receiving antenna form a wireless power transmission(WPT)system.As long as the array has the physical potential of realizing reconfiguration of multi-polarizations,the amplitude and phase of excitation for the array to be designed can be obtained from MMPTE,which can be used to realize the designated polarization.The antenna array designed by MMPTE has also the advantages of high gain and low side lobes as guaranteed by the MMPTE.Compared with the traditional methods for designing polarization-reconfigurable arrays,our method does not rely on antenna element and the array arrangement and is a universal design method for polarization-reconfigurable antenna arrays.