Oscillation circuit

An oscillation circuit, comprising:

• a resonance circuit including an inner capacitor to be disposed inside a semiconductor integrated circuit, and an outer capacitor and an outer inductor to be disposed outside the semiconductor integrated circuit;
• and
• an amplifier circuit including an input terminal and an output terminal both connected to the resonance circuit,
• wherein said resonance circuit includes a first closed circuit portion including the inner capacitor, the outer inductor, and a first wiring portion for connecting the inner capacitor and the outer inductor, and
• said resonance circuit further includes a second closed circuit portion including the outer capacitor, the outer inductor, and a second wiring portion for connecting the outer capacitor and the outer inductor so that an electrical current flowing through the first closed circuit portion is smaller than that flowing through the second closed circuit portion when the oscillation circuit is operated.

A wireless device, comprising:

• a resonance circuit including an inner capacitor to be disposed inside a semiconductor integrated circuit, and an outer capacitor and an outer inductor to be disposed outside the semiconductor integrated circuit;
• an amplifier circuit including an input terminal and an output terminal both connected to the resonance circuit;
• and
• a reception circuit disposed inside the semiconductor integrated circuit,
• wherein said resonance circuit includes a first closed circuit portion including the inner capacitor, the outer inductor, and a first wiring portion for connecting the inner capacitor and the outer inductor,
• said resonance circuit further includes a second closed circuit portion including the outer capacitor, the outer inductor, and a second wiring portion for connecting the outer capacitor and the outer inductor, and
• said second closed circuit portion is configured to have a wiring resistance smaller than that of the first closed circuit portion.