MICRO-STRIP BAND-STOP FILTER HAVING OPEN STUB AND SPURLINE

摘要

The present invention relates to a micro-strip band-stop filter comprising: a micro-strip transmission wire; a first open stub formed on the micro-strip transmission wire, and disposed at one side in a vertical direction of the micro-strip transmission wire; a second open stub disposed to face the first open stub with a predetermined interval (G1) therebetween; a first spurline formed on the micro-strip transmission wire, and disposed at one side in parallel to a length direction of the micro-strip transmission wire to be opened in one direction; and a second spurline formed on the micro-strip transmission wire, disposed in the other side in parallel to a length direction of the micro-strip transmission wire, and opened in the same direction as the first spurline. One end of the first spurline and one end of the second spurline are respectively separated at predetermined intervals (S1, S2) from the micro-strip transmission wire by an L-shaped slot. Accordingly, a larger stop bandwidth is ensured compared to a conventional band-stop filter, and many gains can be ensured for suppression values. Also, the micro-strip band-stop filter of the present invention can be miniaturized and simplified, and production costs can be reduced.;COPYRIGHT KIPO 2017