Patent ID: 9368855
Filing Date: 2016-06-14
CPC Classification: H01P,H05K

Claim Text:
1. A planar circuit to waveguide transition, comprising: a conductor pattern provided on one side of a dielectric substrate; a first opening in which a first part of the conductor pattern is removed; a second opening in which a second part of the conductor pattern is removed such that one end of the first opening is open with respect to one end of the second opening; a third opening and a fourth opening which are separated from the second opening, and in which the conductor pattern is removed to be parallel to an extending direction of the second opening at opposite positions across the second opening; a first signal line conductor formed by the conductor pattern remaining in a region between the second opening and the third opening; a second signal line conductor formed by the conductor pattern remaining in a region between the second opening and the fourth opening to constitute a balanced line together with the first signal line conductor; and a metal member having a cavity and arranged to cover the first opening to constitute a waveguide together with the conductor pattern, wherein each of the first, third and fourth openings is closed on three sides by the conductor pattern.