NJT1307A S-Band Radar Front End NJT1307A is a S-Band Radar Front End which includes 4 port circulator, high power limiter, variable attenuator, GaAs FET low noise amplifier, image rejection mixer, local VCO with isolator and FET operation monitor circuit in a single package. ---- ELECTRICAL ---- <at 25 degree centigrade> Min Operating voltage 11.8 Operating current Local frequency VT=4V VT=24V 3.17 Noise figure conversion gain 3 1dB gain compression point (RF port) -5.0 Variable attenuation Range (Note2) 20 RF input power at transmitter port (Note1) RF input power at antenna port (Note1) Note: 1. f=3.05GHz, Pd=1usec, Duty=0.001 2. Vatt=12V typical 12 90 4 4 25 - Max 12.2 120 3.05 5 15 3 Unit V mA GHz GHz dB dB dBm dB kW kW ---- BLOCK DIAGRAM ---MONITOR OUT Balanced Mixer 4-Port Circulator To Antenna LNA H.P Limiter 0° 0° Variable ATT H Isolator Divider Monitor CKT Local VCO ∼ 0° IF OUT (50Ω) H 90° 90° To Transmitter 0° Balanced Mixer TUNE Regulator POWER SUPPLY ATT CONTROL For further information on the use of the front end, please contact New JRC. New JRC reserves the right to change the specification of goods without notice. Rev.2