Abstract
In future-oriented communication, such as wireless power transmission or 6G, large array antennas are used to maximize energy and signal transmission efficiency in the near field. Therefore, the analysis of the near-field beam pattern of an array antenna is a very important research field. In this paper, we propose a method to accurately and efficiently reconstruct the near-field beam pattern, which is difficult to analyze, using the infinitesimal dipole modeling (IDM) of an array antenna. First, IDMs are extracted from the active element pattern (AEP) of the far-field acquired through measurement or simulation, and the mutual coupling effect of the array antenna is reflected in the IDM. Near-field active element patterns (NAEP) can be obtained by performing electromagnetic wave re-radiation for an observation area preset for each of the current distributions of IDMs. Subsequently, a method to easily and accurately analyze the desired near-field electric beam pattern through the combination of the corresponding NAEP and beam coefficient is proposed. Moreover, a method to efficiently extract the beam coefficients using the least squares method and a mask is proposed. Using the obtained beam coefficients, a near-field beam pattern can be synthesized into the desired shape. The proposed method is described in detail using a simulation of a 12-dipole linear array antenna as an example.ample.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: The Journal of Korean Institute of Electromagnetic Engineering and Science
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
