PHOTORECEIVER Russian patent published in 2005 - IPC

FIELD: semiconductor electro-optics; luminous radiation receivers.

SUBSTANCE: photoreceiver can be used for creating atmospheric optical communication lines, in particular, for creating moving objects tele-orientation laser systems, for example, monitored rockets. Photoreceiver has capacitor, first transistor, photodiode and power supply. Photodiode is connected to collector circuit of the first transistor and capacitor is connected to base of the first transistor. Photoreceiver also has non-inverting amplifier, non-linear band filter, second transistor, first to third resistors and blocking capacitor. Second output of the capacitor has to output of photoreceiver. Cathode of photodiode is connected with input of non-inverting amplifier which has output connected with input of non-linear band filter, with base of second transistor, with second resistor and blocking capacitor. Second output of second resistor is connected with bas of first transistor, which has emitter circuit where first resistor is brought up. First resistor is connected with power source and emitter of second transistor. Output of non-linear band filter is connected with cathode of photodiode and collector of second transistor through third resistor.

EFFECT: improved sensitivity; widened dynamic range of photoreceiver.

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