Patent ID: 8604891
Filing Date: 2013-12-10
Classification: H01P

Abstract:
1. A high-frequency substrate having a coplanar line comprising a signal line which transmits a signal and a pair of front ground patterns disposed in parallel with the signal line interposed therebetween on a first surface of a dielectric substrate, a back ground pattern on a second surface of the dielectric substrate opposite the first surface, and a plurality of conductive vias which connect the front ground patterns to the back ground pattern are arranged at a predetermined interval, the high-frequency substrate comprising: a signal line breaking portion which breaks the signal line; a substantially rectangular parallelepiped signal-line capacitor that connects breaking ends of the signal line to each other; and conductive members disposed in the front ground pattern on both sides of the signal line breaking portion of the signal line so as to have substantially the same shape as the signal-line capacitor, wherein a relation of 2×H