MULTICHANNEL MICROWAVE RECEIVER WITH DOUBLE FREQUENCY CONVERSION Russian patent published in 2012 - IPC H04B1/06 

FIELD: radio engineering.

SUBSTANCE: microwave receiver with double frequency conversion comprises a power divider, a control circuit, a frequency multiplier, a commutator and n receiving channels, every of which comprises a cyclotron protective device, a low noise amplifier, a valve, two frequency mixers, the first low pass zonal filter, the first amplifier of the first intermediate frequency, the first switch, the second low pass zonal filter, the first attenuator, the second switch, the second amplifier of the first intermediate frequency, the second attenuator, the third attenuator, the third amplifier of the first intermediate frequency, a thermal stabilisation cascade, the fourth attenuator, the third, fourth and fifth switches, the fourth amplifier of the first intermediate frequency, the third low pass zonal filter, an amplifier of the second intermediate frequency, the fifth attenuator.

EFFECT: higher noise immunity to external noise and spurious radiation, high stability of channel parameters when exposed to climatic conditions.

2 dwg