| 摘要 |
<p>A frequency stabilized dielectric heating apparatus using a semiconductor and an amplification circuit structure thereof are disclosed. The frequency stabilized dielectric heating apparatus includes a phase locked loop (PLL) 100 for stabilizing a frequency, a band pass filter (BPF) 200 connected to a voltage controlled oscillator 150 of the PLL 100, for eliminating a harmonic component, a preamplifier 300 and a power amplifier 400 for amplifying an output of the BPF 200, an impedance matching circuit 500 for matching the amplified output with an impendence of a load 600 and outputting the matched output to the load 600. Therefore, the present invention locks an output frequency irrespective of external disturbance from a peripheral device and an influence by climate and temperature by using a semiconductor device instead of a vacuum tube, easily matches with an impedance of a load, and provide an output corresponding to a resonant point of the load even though dielectric heating is being kept.</p> |
