| 摘要 |
PROBLEM TO BE SOLVED: To raise the attenuation of the subharmonics and harmonics of an oscillation frequency in a multiplying circuit type oscillator and stably obtain expected transmission characteristics. SOLUTION: An oscillation circuit 13 obtains an oscillation output having a distorted waveform of a fundamental wave frequency (f). A first tuning circuit 11 connected to the output of the oscillation circuit 13 tunes with an n-multipled high frequency signal of the fundamental wave frequency (f) to obtain an output with attenuated subharmonics and harmonics of the high frequency signal. A second tuning circuit 12 to be tuned with the n-multipled high frequency signal of the fundamental wave frequency (f) is connected to the output of the first tuning circuit through an amplifier 10. A DC-cutting coupling capacitor 14 is connected for example between both tuning circuits 11, 12, i.e., for example between the input of the amplifier 10 and the first tuning circuit. COPYRIGHT: (C)2007,JPO&INPIT
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