在要求滤波器的虚假谐振响应低于一定的电平时,一种由半波长和阶梯阻抗谐振器组成的新型微波带通滤波器是特别适用的。用一般设计方法设计的微带并联耦合带通滤波器在二次谐波附近总是有虚假谐振响应的,当它用作振荡器或放大器中的输出滤波器时,这种现象是不希望出现的,许多人把这种特殊滤波 A novel microwave band-pass filter consisting of a half-wavelength and ladder-impedance resonator is particularly useful when it is required that the false resonance response of the filter be below a certain level. A microstrip parallel coupled bandpass filter designed with a general design approach always has a pseudo-resonant response near the second harmonic and is undesirable when it is used as an output filter in an oscillator or amplifier Many people put this special filter