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波导过渡器(园矩变换器、方矩变换器、园园变换器等等)广泛应用在传输系统、天线元件、铁氧体迴路和微波测试系统之中。一般利用直线锥体或金属介质变换器,能达到良好的阻抗匹配的频带,最大为中心频率f_0的±15％。随着微波技术的发展,许多微波系统和设备要求波导过渡器的频带越来越宽,频率复盖范围至少1.25 f_c至1.90 f_c(f_c为截止频率)。利用切比雪夫多项式
Waveguide transformers (torque converter, square torque converter, garden converter, etc.) are widely used in transmission systems, antenna components, ferrite loop and microwave test system. The general use of linear cone or metal dielectric converter, to achieve a good impedance matching frequency band, the maximum center frequency f_0 ± 15%. With the advancement of microwave technology, many microwave systems and devices require that the waveguide transitional frequency band be wider and wider, with a frequency coverage of at least 1.25 f_c to 1.90 f_c (f_c is the cut-off frequency). Using Chebyshev polynomials