| 摘要 |
PROBLEM TO BE SOLVED: To provide an oscillation circuit capable of oscillating a high frequency signal. SOLUTION: A rough adjustment circuit 1 is connected to a fine-adjusting circuit 2. The circuit 1 is provided with a rough-adjustment switching stage 3, whose input terminal is connected to a wire 11 connected to the output terminal of the circuit 2 and a fine-adjusting circuit 4, whose input terminal is connected to a wire 12 connected to the output terminal of the stage 3. The circuit 1 is provided similarly with a rough adjustment switching stage 5, whose input terminal is connected to a wire 13 connected to the output terminal of the circuit 4, a fine adjusting circuit 6 whose input terminal is connected to a wire 14 connected to the output terminal of this step 5, a rough adjustment switching stage 7 whose input terminal is connected to a wire 15 connected to the output terminal of this circuit 6, a fine adjusting circuit 8 whose input terminal is connected to a wire 16 connected to the output terminal of this step 7 and a rough adjustment switching stage 9, whose input terminal is connected to a wire 17 connected to the output terminal of this circuit 8.
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