Oscillators – Solid state active element oscillator – Transistors
Patent
1993-02-01
1994-07-05
Mis, David
Oscillators
Solid state active element oscillator
Transistors
331117FE, 331177V, H03B 512, H03B 104, H03L 500
Patent
active
053271068
ABSTRACT:
An apparatus suitable for use as a local oscillator is disclosed, which includes (a) a tank circuit operatively associated with an FET to generate a fundamental frequency oscillating signal at an output of the FET and (b) a bi-directional clamp circuit coupled at a junction between the tank circuit and a gate of the FET to limit a swing of the gate of the FET, preventing the gate of the FET from entering either a saturation region or a cut-off region. The bi-directional clamp includes a first diode coupled to allow positive current to flow to the junction and a second diode coupled to allow positive current to flow away from the junction. The oscillator produces an output with a reduced level of radiation-prone harmonics.
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Delco Electronics Corp.
Funke Jimmy L.
Mis David
Simon Anthony Luke
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