利用輕薄微小化髮夾型共振器以實現橢圓函數濾波器

Abstract

本文利用微小髮夾型共振子來設計及製造叉耦合橢圓函數平面微波濾波器。小面積的濾波器及利用非相鄰的電耦合及磁耦合來實現和調整是此濾波器的特性。根據推算四種基本的耦合結構的共振頻率可找出所需要的耦合參數。利用所得耦合參數來設計及製造四种四階的橢圓函數濾波器。

A novel type of cross - coupled planar microwave elliptic function filter using coupled microstrip miniaturized hairpin resonators is designed and fabricated. It is shown that the filter size is small and allows nonadjacent similar electric and magnetic couplings to be realized and adjusted. The calulation of the coupled coefficients for each of four basic coupling structures encountered in these filters is based on the calculated resonant frequencies. Four four - pole elliptic function filters are designed and fabricated. Both the theoretical and experimental results are compared.