| 摘要 |
PURPOSE: A waveguide filter using a cavity is provided to form a connection with an external module without an additional element by positioning input and output parts of a waveguide at an arbitrary point. CONSTITUTION: A first input and output part(305) receives an external signal. The first input and output part is positioned at one side of a cavity(303). The cavity is formed to filter an external signal by using mode coupling. A second input and output part(307) is positioned at the other side of the cavity. The second input and output part outputs the filtered external signal. The cavity is formed with a shape of a polygon, a shape of a circle or a shape of ellipse. |
