Patent ID: 8253511
Filing Date: 2012-08-28
Classification: H01P,H01Q

Abstract:
1. A triple plate feeder-waveguide converter comprising: a triple plate feeder composed of a film substrate that has a strip feeder conductor and is arranged relative to the surface of a ground plate via a first dielectric having a thickness and an upper ground plate arranged over the surface of the film substrate via a second dielectric, and a waveguide having an inner dimension, said waveguide being connected to the ground plate; wherein, there is provided in the ground plate a through hole in a connection position thereof in which the ground plate and the waveguide are connected with each other, the through hole having the same inner dimension as the waveguide, a first metal spacer portion having a dimension that is the same thickness as the first dielectric is provided in a support portion of the film substrate, the film substrate is interposed between the first metal spacer portion and a second metal spacer portion having a dimension that is the same dimension as the first metal spacer portion, the first and second metal spacer portions each has an inner dimension that is the same as the inner dimension of the waveguide, the upper ground plate is arranged on an upper end of the second metal spacer portion to close a waveguide portion formed by an inner wall of the first metal spacer portion and the second metal spacer portion and the through hole, and a square resonance patch pattern is provided at a tip portion of the strip feeder conductor disposed on the film substrate in such a way that the center position of the square resonance patch pattern coincides with the center position of the inner dimension of the waveguide.