| 摘要 |
PURPOSE:To simplify measuring work by providing a magnetron on a waveguide for impedance measurement by making phase difference between an antenna of said magnetron and an outside antenna of a measurement apparatus to be integral times of one half of guide wavelength. CONSTITUTION:An outside antenna 5 has the same output part construction with a magnetron, which performs measurement, and is provided outwardly projected at one end of a square wave guide 4 while an inside antenna 6 connects the outside antenna 5 and the square wave guide 4 in the way of a microwave. The microwave enters a directional corrector 9 while passing through the connection holes 10 and 11 for being divided into an incident wave and a reflection wave. The magnetron 12 is attached to the connection hole 8 of the square wave guide for being fixed to an electron range 2. Phase difference between the outside antenna 5 and the antenna 13 is set up to be integral times of one half of guide wavelength. Thereby, a working point on the Smith chart is equal to the case where the magnetron is directly connected to the wave guide of the electron range. |
