Oscillator with constant output level over oscillation frequency range

An oscillator comprising:

• an amplification transistor;
• an oscillation transistor that supplies an oscillation signal to the amplification transistor;
• a first reactance circuit connected between a node between the oscillation transistor and the amplification transistor and ground;
• and
• a second reactance circuit that supplies negative feedback to the amplification transistor and maintains a constant level of the oscillation signal, the reactances of the first and second reactance circuits within a factor of three of each other.

A method of maintaining a constant oscillation signal level for an oscillator having an oscillation frequency, the method comprising:

• supplying a signal output from an oscillation transistor and to an amplification transistor;
• capacitively coupling a collector of the oscillation transistor with groundusing a first capacitor having a first reactance;
• capacitively coupling a base of the amplification transistor with ground using a second capacitor having a second reactance and providing negative feedback to the amplification transistor;
• and
• limiting the first reactance and the second reactance as determined at the oscillation frequency to within about three times of each other.