| 摘要 |
<p>Disclosed is a waveguide filter provided with: a dielectric substrate that is provided on an E surface of a waveguide and has a first surface and a second surface; a conductive pattern that is provided on the first surface of the dielectric substrate and comprises a conductive material having a slit that extends in the direction of signal propagation; a plurality of through-holes that are filled with a conductive material and are provided along the aforementioned slit so as to connect the second surface of the dielectric substrate to the conductive pattern area on the first surface of the dielectric substrate; a ground pattern that comprises a conductive material and is provided on the second surface of the dielectric substrate, except for where the aforementioned through-holes are exposed; a plurality of switching elements that can electrically connect or disconnect the ground pattern to/from the plurality of exposed through-holes on the second surface; and a center-frequency correction unit that controls whether the plurality of switching elements are on or of, thereby increasing or decreasing the number of through-holes connected to the ground pattern and consequently correcting a center frequency.</p> |
