| 摘要 |
PURPOSE:To easily perform the matching of a coaxial waveguide with an excitation means by setting the sum of the inside diameter of the outer conductor of a first coaxial waveguide and the outside diameter of the inner conductor of the first coaxial waveguide nearly equal to the sum of the inside diameter of the outer conductor of a second coaxial waveguide and the outside diameter of the inner conductor of the second coaxial waveguide. CONSTITUTION:A circular horn antenna for high frequency is provided at the inside of a coaxial horn antenna, and two frequencies are shared. And the sum of the inside diameter 2a of the outer conductor part of a coaxial waveguide 1 and the outside diameter 2b of its inner conductor part can be set equal to the sum of the inside diameter 2c of the outer conductor part of a coaxial waveguide 2 and the outside diameter 2d of the inner conductor of the coaxial waveguide 2 centering a Z-axis. By employing such structure, the propagation of a fundamental mode between two coaxial waveguides 1 and 2 can be performed with satisfactory matching. |
