PRINTED CIRCUIT BOARD DEVICE AND BOOSTER DEVICE EQUIPPED THEREWITH

摘要

PROBLEM TO BE SOLVED: To provide a printed circuit board device in which the transmission loss of high-frequency electric signal is reduced. SOLUTION: In the printed circuit board device in which a branching filter 1 is mounted on a printed circuit board 2, the ground pattern 24 for grounding the printed circuit board 2 is provided at the part excluding a region excepting a region of orthogonal projection of grounding conductive pattern of the branching filter 1 from the orthogonal projection of the body 11 of the branching filter 1. Since the capacity value of the floating capacity generated between the conductive part of the interior of the branching filter 1 and the ground patten 24 is lowered as compared with the case that the ground pattern 24 is provided on the entire rear surface of the printed circuit board 2, the transmission loss is reduced by hardly leaking the high-frequency electric signal transmitted through the branching filter 1 to the ground pattern 24. COPYRIGHT: (C)2005,JPO&NCIPI