Oscillators – With device responsive to external physical condition – Temperature or light responsive
Patent
1996-11-26
1998-10-13
Mis, David
Oscillators
With device responsive to external physical condition
Temperature or light responsive
331 40, 331108C, 331115, 331117R, 331177R, 331181, 333214, 359191, 455318, 455333, H03B 500, H03B 1900, H04B 128, H04B 1006
Patent
active
058218254
ABSTRACT:
An optically controlled oscillator utilizes a HEMT or a PIN diode as a photodetector and either a HEMT or HBT as an active inductor. The optically controlled HEMT active inductor provides a means for tuning the frequency of the oscillator. The optical receiver includes an optically tunable active inductor using a photodetector which includes a resonant tank circuit of an electronic oscillator to allow both optical/digital quench and unquench of an oscillator or digital AM detection with an improved signal to noise ratio, or optical FM modulation and analog AM detection by tuning/shifting the frequency of the oscillation through the detection of the optical light intensity.
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Mis David
TRW Inc.
Yatsko Michael S.
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