PARALLEL COUPLED-LINE FILTER MINIATURIZED BY USING LUMPED CAPACITORS AND GROUNDING AND FABRICATION METHOD THEREOF

摘要

A parallel coupled line filter is miniaturized by using lumped capacitors and grounding the capacitors. The parallel coupled line filter includes a parallel coupled line, a first capacitor connected to one of two input ports of the parallel coupled line, and a second capacitor connected to one of two output ports of the parallel coupled line. The parallel coupled filter can be miniaturized to a desirable size, on the basis of relatively simple theoretical knowledge. The parallel coupled line filter exhibits excellent frequency selectivity and improved harmonic characteristics.