| 摘要 |
A frequency converting circuit is provided comprising a constant current source, an oscillation circuit including an amplifier so connected to the constant current source as to operate in the unsaturated operation region owing to the output current of the constant current source, an operation circuit which receives an input signal and the output signal from the oscillation circuit and produces an output signal corresponding to the product of both the received signals and a frequency converter for converting the frequency of the output signal of the operation circuit. |
