Исследование микрополосковых частотно-селективных устройств СВЧ на резонансных отрезках замедляющих металлодиэлектрических систем

Антенны. 2009. № 10. С. 31–37.

Yelizarov (Elizarov) A. A., Кухаренко А. С.

The construction of a microstrip lowpass filter presents metallic conductors in the form of parallel sections of zigzag-lines and symmetrically located between them dielectric zigzag insertion, made on a dielectric subscript of policor, and has a much more coefficient of dieing (S21 parameter) and the steepness of the front of the amplitude-frequency characteristic, in the difference of the construction of three parallel metallic zigzag-lines.

The simultaneous use of periodic slow-wave structures of metal and dielectric in the microstrip devices also allows us to make a bandpass filter. Constructively such a filter is made on a dielectric subscript of policor, contains a metallic conductor in the form of a section of a zigzag-line and a periodic structure of dielectric insertions. Such a construction demonstrates a presence of the second, lower frequency of shearing, caused by the periodicity of the insertions-resonators, what allows us to get a filter with the band 2,0...2,7 GHz. The connecting of the opposite ends of the dielectric insertions with the metallic screen allows us to change the band width of the filter.

Keywords: зигзаг-линия, dielectrics, диэлектрики, microstrip retarder system, zigzag-line, insertion, subscript, lowpass filter, bandpass filter, микрополосковое частотно-селективное устройство, фильтр низких частот, полосно пропускающий фильтр