Mitsubishi Denki Kabushiki Kaisha

Hiroshi Shigesawa

Hiroyuki Deguchi

Soichi Matsumoto

Mikio Tsuji

In a horn antenna apparatus for use in an antenna system for radar, some of the excited radio waves in a TE11 mode in a radio-wave input portion are converted to those in a higher mode in a waveguide portion . As the inclination of a line of intersection S of the waveguide portion is not fixed but continuously varied, the higher mode such as a TM11 mode and TE12 mode and the like is excited everywhere in the direction of the axis Z of the waveguide portion . Then the configuration of the line of intersection is determined so that an amplitude and a phase as the generated quantity of higher mode such as the TM11 mode generated in the waveguide portion conform to desired values with respect to each higher mode.

Growing community of inventors

Shiga, Japan

Hiroshi Shigesawa