A tunable microwave oscillator including a transistor with a tuning diode which form an oscillating circuit particularly for use in television tuners and which does not require an inductor. A novel combination of an oscillator and mixer is also provided and the oscillator and mixer are designed to cover...http://www.google.com/patents/US4249262?utm_source=gb-gplus-sharePatent US4249262 - Tunable microwave oscillator
