Research on Characteristic Mode of Reradiation Interference in Transmission Lines

As large metal conductors, transmission line towers can cause interference to neighboring radio stations. Existing theories cannot intuitively explain the correlation between transmission lines and reradiation interference, so as to better suppress the reradiation interference. intuitively explain the correlation between transmission lines and reradiation interference, so as to better suppress the reradiation interference capability of transmission lines. Based on the reradiation interference line model of the transmission line, the idea of using the eigenmode theory algorithm to solve the reradiation interference problem. Based on the reradiation interference line model of the transmission line, the idea of using the eigenmode theory algorithm to solve the reradiation interference of the transmission line is proposed. According to the eigenmodes derived from the eigenmode theory algorithm, the reradiation interference is studied, the coefficients of the eigenmodes are analyzed, and the idea of screening the eigenmodes is proposed. The traditional method of moments is compared with the eigenmode theory algorithm to verify the feasibility of the eigenmode theory algorithm. The traditional method of moments is compared with the eigenmode theory algorithm to verify the feasibility of the eigenmode theory algorithm. Combined with the existing reradiation interference calculation numerical standards, an eigenmode screening method is proposed. that the accuracy of the eigenmode algorithm can be controlled within 1% by simplifying the calculation, and then the characteristic current that can be analyzed by the eigenmode theory algorithm can be analyzed. analyzed by the eigenmode theory is only related to the structure of the transmission line, and the reradiation interference of the transmission line can be studied and analyzed. Active protection measures for transmission lines provide theoretical support.