Technical Information Rev.1 NJS4310D S-Band Radar Front End NJS4310D is designed for the front end of marine radar system. It features a small size and a light weight operable at any frequency between 3.02GHz and 3.08GHz. This front end module consists of GaAs FET low noise amplifier, Image rejection mixer, Local VCO with buffer amplifier. FET monitoring circuit is included in the design to monitor FET drain current. The stability of the local VCO frequency by the input RF power is increased effectively by the buffer amplifier which is located between image rejection mixer and local VCO. － ELECTRICAL － < at 25 ºC > Operating voltage Operating current Local frequency Min 11.8 － － 3.17 － 6.0 －5.0 － － － VT= 4V VT=24V Noise figure(Note3) Conversion gain(Note3) 1dB Gain compression point(IF Port) Monitor voltage RF single pulse burnout (Note1) RF repetitive pulse burnout (Note2) Typical 12.0 － － － － － － 50 － － Max 12.2 100 3.05 － 3.0 － － － 600 400 Unit V mA GHz GHz dB dB dBm mV mW mW Note1: f=3.05GHz, Pd=10nsec Note2: f=3.05GHz, Pd=1µs, Duty=0.001 Note3: Temperature Range Ta=－30deg. 〜 ＋90deg. － BLOCK DIAGRAM － WG-MIC Transition Balanced Mixer LNA 0deg RF IN 0deg TUNE Buffer Amplifier IF OUT Divider 90deg Monitor Circuit 0deg Lo.VCO Balanced Mixer MONITOR OUT 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. 1-1,Fukuoka 2-chome, Fujimino-city Saitama prefecture. 356-8510 Japan 12.06 Phone:049-278-1297 Fax :049-278-1419 Technical Information Rev.1 1-1,Fukuoka 2-chome, Fujimino-city Saitama prefecture. 356-8510 Japan Phone:049-278-1297 Fax :049-278-1419