UNNECESSARY RADIATION PREVENTION DEVICE AND UNNECESSARY RADIATION PREVENTION METHOD

摘要

PROBLEM TO BE SOLVED: To provide a device that prevents unnecessary radiation.;SOLUTION: An unnecessary radiation prevention device includes: a local oscillator for generating an output signal with a frequency varying over time on the basis of a reference signal from a reference oscillator; and a variable bandpass filter which the output signal from the local oscillator is input into and which lets a signal in a prescribed passage band pass through and output. The passage band is controlled to follow change over time of the frequency of the output signal from the local oscillator and include the frequency.;SELECTED DRAWING: Figure 1;COPYRIGHT: (C)2018,JPO&INPIT