A NEW MOMENT METHOD FOR THE FAST AND ACCURATE ANALYSIS OF NORMAL MODE HELICAL ANTENNAS

查看全文 作　　者：Ji Yicai Sun Baohua Liu Qizhong (Institute of Antennas and EM Scattering, Xidian University, Xi’an 710071) 出　　处：《Journal of Electronics(China)》索引2001年第18卷第4期,共4页 摘　　要：In this letter, a new moment method using helical segments is presented to model Normal Mode Helical Antenna (NMHA). Using this method, the NMHA can be modeled by a few segments. The current distributions and radiation patterns of some NMHAs are calculated.A comparison is made between results obtained using this helical segment algorithm and a linear segment algorithm, and the results of the two algorithms agree fairly well. When calculating the impedance matrix [Z], all the elements of the matrix can be obtained by only calculating a few elements with the application of the symmetric and periodic characteristics of the NMHA.Therefore, the CPU time and the memory storage are significantly reduced, with the accuracy and speed enhanced. 关 键 词：MOMENT method HELICAL SEGMENT NORMAL MODE HELICAL ANTENNA (NMHA)