Designed for use in the receiving units of modern weather and navigation radars and provides:
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reception in a wide frequency range and the conversion of radar signals in narrowband and broadband modes;
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a frequency shift of fГ2 by 56 MHz and the transition to wideband mode in the presence of a reference frequency of 56 MHz;
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reducing the sensitivity of the receiving module for the duration of the clocks of automatic noise level adjustment;
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locking the receiving path for the duration of the transmitter;
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protection against impulse power seeping into the input of the module;
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high radio-tightness of the receiver due to the shielding of all high-frequency modules.
The radar receiving module has an input attenuator for adjusting the input signal level and protecting the low-noise amplifier for the duration of the probe pulse, with a short recovery time.
Specifications:
- operating frequency range ................................................. X;
- gain (adjustable), dB ........................................................... 46;
- noise figure, dB ................................................................... 3,5;
- the upper limit of the linearity of the amplitude characteristic, dB .................................................................- 35;
- coefficient of a standing wave at the entrance ......... 1,6;
- selectivity for mirror reception channels, dB ............. 40;
- bandwidth by fpch2 = 28 MHz at the level of -3 dB, MHz ............................................................................................... 5;
bandwidth according to fpc2 = 84 MHz at the level of -3 dB, MHz ..................................................................................... 30;
- depth of manual adjustment of the transmission coefficient, dB .......................................................................... 25.