PHOTO DETECTIVE MICROWAVE MODULE Russian patent published in 2018 - IPC H01L31/232 G02B6/42 

FIELD: radio engineering and communications.

SUBSTANCE: invention relates to the field of radio engineering, in particular to radio photonics, and can be used in the design of antenna excitation systems and active phased antenna arrays (APAA) for communication, radar, radio navigation and electronic warfare. Photodetection microwave module includes a symmetric fiber-optic splitter of optical microwave pulses fed through the input fiber, microwave photodiodes optically coupled to the output fiber of the splitter, a reverse bias is applied to each photodiode, the voltage value of which is set in series with the photodiode through the load resistance by assembling valve photo cells operating without reverse bias voltage and irradiated through the optical fiber with continuous optical radiation, the number of valve photo cells in one assembly is set not more than the ratio of the maximum allowable reverse bias voltage of each microwave photodiode to the operating voltage generated by each valve photo cell, parallel to the assembly of the photovoltaic cells, a capacitor is connected, the capacitance of which is set to at least twice the ratio of the pulse duration to the value of the load resistance, the load resistances are interconnected in series, and the common conclusions of the serial assembly of the load resistances are connected via the microwave path to the microwave load, moreover, the value of each load resistance is set equal to the ratio of the wave resistance of the microwave load to the number of microwave photodiodes, set equal to the specified output pulse power of the module, multiplied by the fill factor of the pulsed optical signal and divided by the total power of the valve photoelectric cells in one assembly.

EFFECT: invention provides an increase in the power of a photo-detector microwave module that converts optical radiation pulses into powerful electrical pulses, and optimal coordination with the microwave load.

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