The theoretical and experimental results are presented, which show the low axial ratio and low loss characteristics over octavefrequencyband of the polarizer.
给出理论和实验结果，证明了这种四层曲折圆极化器可以在倍频程范围内得到良好的低轴比、低损耗特性。
2
In the FFT based algorithm for octave CPB spectrum, the frequency leakage causes big calculation errors in each frequency band.