A FILTER STRUCTURE EMBEDED IN A PRINTED CIRCUIT BOARD USING FOR ULTRA WIDE BAND

摘要

PURPOSE: The ultra-wideband construct of filter and printed circuit board including the same directly embodies the construct of filter in the printed circuit board used for the specific module. The chip filter purchasing cost and chip filter built-in cost are reduced. CONSTITUTION: In the lowest side(100) and top surface(700) of the PCB substrate, the front side ground metal pattern is formed. The resonator circuit pattern is formed in the second metal layer of the second dielectric layer(400) top. Capacitors for the matching property improvement are formed in the first metal layer of the first dielectric layer(200) top.