MEANDER SPURLINE BAND STOP FILTERS AND MANUFACTURING METHODS THEREOF

摘要

Disclosed is a meander spurline bandstop filter. According to an aspect of the present invention, the meander spurline bandstop filter includes: a substrate; a first reference line coupled to an end of the substrate in the longitudinal direction; a second reference line coupled to the other end of the substrate in the longitudinal direction; a first meander spurline which is formed on the substrate, extended from a side parallel to the longitudinal direction of the substrate, and is formed in the meander shape; a second meander spurline which is formed on the substrate, is extended from the other end parallel to the longitudinal direction of the substrate, and is open to a direction opposite to the first meander spurline; a first T-type slot line which is formed on the substrate, is extended from the first reference line, and is in a folded T-shape; and a second T-type slot line which is formed on the substrate, is extended from the second reference line, and is in a folded T-shape symmetrical to the first T-type slot line with reference to a point. According to an embodiment of the present invention, the meander spurline bandstop filter integrated by using an integrated passive device technology can be designed and manufactured. More specifically, meander spurline bandstop filter of the present invention can achieve an excellent S-parameter response by forming a T-type slot line which has a point-symmetric form between the double meander spur-lines, and especially, can have a high speed response, a small size, and a high return loss.