Patent ID: 7061333

Claim:
A high frequency oscillator comprising: a substrate; a resonator circuit disposed on one principal surface of said substrate, said resonator circuit comprising a closed loop-shaped slot line including an inner conductor and an outer conductor, said slot line having a line length equal to an integer multiple of a wavelength corresponding to an oscillation frequency; an electric boundary point set on said slot line such that the electric boundary point functions as an electrically open end, said electric boundary point being a maximum voltage point of a component of the oscillation frequency; a two-port negative resistance element for connecting between said inner conductor and said outer conductor; and output means electrically connected to said slot line at a position such that a clockwise distance along said slot line from said position to said electric boundary point is equal to a counterclockwise distance along said slot line from said position to said electric boundary point, said position corresponding to another maximum voltage point of the component of the oscillation frequency.