| 摘要 |
PURPOSE:To ensure the uniform heating for a material to be heated, by applying the anode voltage alternately to a pair of magnetrons through a pair of voltage multiplying amplifiers consisting of capacitors and diodes connected to the secondary side of a boosting transformer. CONSTITUTION:A microstrip line 1 is formed with an earth conductor 3 and a center conductor 4 stuck on the upper and lower surfaces of a dielectric substrate 2 respectively. Plural slits 5 are formed to the conductor 3 along the propagating direction of the micro mu wave, and a ladder pattern 6 is formed. Magnetrons MGTs 16 and 17 are connected to coaxial cables 7 and 8 connected to the line 1, and the micro wave is supplied from both directions A and B. Voltage multiplying rectifiers 22 and 25 consisting of capacitors C21 and C24 and diodes 20 and 23 connected to the secondary side of a boosting transformer 19 are connected to anodes 26 and 27 of the MGTs 16 and 17 respectively. Then the MGTs 16 and 17 oscillate alternately by the alternate charging/discharging of the C21 and C24. Thus the microwave is supplied to the line 1. As a result, a material 15 to be heated which is held between transfer rollers 13 and 14 is heated uniformly. |
