| 摘要 |
PURPOSE:To obtain a sinusoidal wave generating circuit suitable to circuit integration with simple constitution and low distortion factor by frequency-dividing a generated signal into signals having different frequencies from each other and identical respectively to required output frequencies and synthesizing the signals so as to extract a sinusoidal wave from the synthesized signal. CONSTITUTION:The circuit is constituted that desired high and low oscillating frequency outputs are obtained respectively from an output of the oscillator 21 via a high group variable frequency divider 22 and a low group variable frequency divider 23. The circuit is so constituted that a synthesized output of a prescribed frequency is obtained by applying directly each output to a mixer 26 without the provision of a D/A converter after the frequency dividers 22 and 23. Thus, the circuit with simple constitution and suitable for circuit integration is obtained. |
