HIGH-FREQUENCY FILTER AND ELECTRONIC DEVICE

摘要

A flat cable high-frequency filter includes a dielectric substrate extending in a transmission direction of a high-frequency signal. The dielectric substrate includes dielectric layers stacked on each other. Elongated conductor patterns are provided on a flat surface of one dielectric layer which faces another dielectric layer. The conductor patterns are as wide as possible in the dielectric substrate in accordance with a desired inductance. A capacitive coupling conductor pattern opposes one conductor pattern by a predetermined area with a dielectric layer therebetween. By using a connecting conductor, the capacitive coupling conductor pattern is connected to the conductor pattern which does not oppose the capacitive coupling conductor pattern.

主权项

1. A high-frequency filter connected between a first circuit element including an antenna and a second circuit element, the high-frequency filter comprising:
a dielectric substrate that includes a flat film; a plurality of conductor patterns that are not connected to each other and include a gap provided between opposing end portions of the plurality of conductor patterns; and a capacitive coupling conductor pattern that is superposed on the plurality of conductor patterns in a thickness direction of the dielectric substrate through the dielectric substrate and is configured to capacitively couple the plurality of conductor patterns, wherein the plurality of conductor patterns define inductors; the capacitive coupling conductor pattern defines a capacitor; and a region of the dielectric substrate in which the capacitive coupling conductor pattern is located is provided at a position closer to the second circuit element than to the first circuit element in the dielectric substrate.