High frequency oscillator and wireless power supply device

A high frequency oscillator comprising:

• a high frequency generation part which generates high frequency power;
• an oscillation part which oscillates the high frequency power generated by the high frequency generation part;
• a matching unit arranged between the high frequency generation part and the oscillation part so as to match the high frequency generation part with the oscillation part, the matching unit comprising one or more matching circuits having different characteristics, one or more rectification element parts and switch parts, the matching circuits corresponding to the respective rectification element parts and switch parts in one to one correspondence, each of the matching circuits comprising a capacitor, the rectification element parts rectifying the high frequency power supplied from the high frequency generation part to the oscillation part, and the switch parts being connected to the respective rectification element parts, and each of the switching parts switching a state of the corresponding capacitor connected to the corresponding rectification element part.