Patent ID: 7688164
Filing Date: 2010-03-30
Classification: H01L,H01P

Abstract:
1. A high frequency circuit board comprising: a microstrip line including a dielectric region, a ground conductor that is formed in a planar shape on a bottom surface of the dielectric region, a first signal strip conductor that is linear shaped and formed on a top surface of the dielectric region; and a coplanar line connected to the microstrip line for mounting a semiconductor device connected to the coplanar line, the coplanar line including: the dielectric region, a second signal strip conductor that is linear shaped and formed on a top surface of the dielectric region and connected to the first signal strip conductor, a pair of first ground strip conductors that are formed on the bottom surface of the dielectric region and not below the second signal strip conductor, and that are formed in regions that correspond to both sides of the second signal strip conductor in such a manner that they continue from the ground conductor, and second ground strip conductors that are formed on each side of the second signal strip conductor on the top surface of the dielectric region and are connected to end portions of the pair of the first ground strip conductors on the bottom surface.