| 摘要 |
A crystal oscillator in which phase noise is reduced includes: a resonance circuit having a crystal unit and split capacitors connected to the crystal unit; a transistor for oscillation having a base connected to the connection node of the crystal unit and the split capacitors; an output line for connecting the node for connecting together the split capacitors and the emitter of the transistor; a crystal resonator inserted in the output line; and a resistor connected in parallel to the crystal resonator.
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