DIELECTRIC RESONATOR FILTER

• Main Authors: SUGIMOTO NORIYASU, KASASHIMA TAKASHI
• Format: Patent
• Language: English
• Published: 30.04.2009
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE; WAVEGUIDES

PROBLEM TO BE SOLVED: To provide a dielectric resonator filter having a narrow bandwidth. SOLUTION: The dielectric resonator filter has: an external conductor having a cavity; a first columnar or planar double mode dielectric resonator that is arranged in the cavity and has a first bottom surface and a first axis; a second columnar or planar double mode dielectric resonator that is arranged in the cavity and has a second bottom surface opposite to the first one, and a second axis; a first notch arranged in a first direction viewed from the first axis on the first double mode dielectric resonator; a second notch arranged in a second direction, where an angle to the first direction becomes an integral multiple of a nearly right angle when viewed from the second axis, on the second double mode dielectric resonator; a first signal terminal having an edge opposite to the side of the first double mode dielectric resonator; and a second signal terminal having an edge opposite to the side of the second double mode dielectric resonator. COPYRIGHT: (C)2009,JPO&INPIT