COMPACT BAND STOP FILTER USING A SPIRAL RESONATOR

摘要

A micro type band stop filter is provided to improve a skirt property by improving a frequency stop property and a frequency pass property. A spiral resonator(10b) includes a dielectric substrate(13b), a first metal substrate(11b), and a second metal substrate(15b). The first metal substrate is laminated on one surface of the dielectric substrate into a spiral shape. The second metal substrate is laminated on the other surface of the dielectric substrate. A power source is formed on a parallel surface about the first metal substrate, is formed into a vertical direction of the first metal substrate, and forms an electric field which is changed according to a time. An input transmission line is connected to one side of the spiral resonator. A frequency is inputted in the input transmission line. An output transmission line is connected to the other side of the spiral resonator. A frequency is outputted in the output transmission line through the spiral resonator.