使用新型微小型共振器設計帶通濾波器

Abstract

本篇論文提出兩種新型微小型共振器，設計2.45GHz的帶通式濾波器。這兩種新型共振器分別使用集總式電容及電感，取代平面式微帶線共振器的外端以及中心點位置的線段。因此，共振器所佔的面積大為縮小，而且在製作上不需要貫孔。本文最後製作並量測一個二階以及兩個三階的柴比雪夫式帶通式濾波器，證明這個想法的實用性

New miniaturized resonators are proposed to design bandpass filters at 2.45GHz. The resonator is incorporated with lumped capacitors and inductors, which are used to replace the outer and central portions, respectively, of a flat microstrip resonator. As a result, the area occupied by the resonator can be quite small, and no via hole is required. One two-pole and two three-pole Chebyshev bandpass filters are fabricated and measured to validate the idea.