legend + 25 oc + 71 oc - - - - - - -55 oc rf amplifier model QB-761 available as: QB-761, housing (e52-0187-2) specifications maximum ratings ambient operating temperature ................. -55oc to +71 oc storage temperature ............................... -65oc to + 125 oc case temperature ................................................. + 125 oc dc voltage ......................................................... + 18 volts continuous rf input power ................................. + 13 dbm short term rf input power ...... 50 milliwatts (1 minute max.) maximum peak power .................... 0.5 watt (3 sec max.) features high gain: 23.0 db typical high power: +18 dbm typical environmental screening available characteristic typical min/max ta= 25 o c frequency 806 - 870 mhz power vdc +15 ma 140 noise figure (db) 3.5 vswr in 1.5:1 out 1.5:1 reverse isolation (db) -39 gain (db) 23.0 gain flatness 1.0 output intercept point 3rd order +32 2nd order gain vs. temperature 1 db compression (dbm) +18 0.5 typical performance data note: 1. specifications are guaranteed when tested in a 50 ohm system. specifications indicated as typical are not guaranteed. 03/11/05 linear s-parameters data freq. ? ? s11? ? ? ? s21? ? ? ? s12? ? ? ? s22? ? mhz ang db ang db ang db ang db 806 838 850 870 -17.3 -16.3 -16.0 -15.7 -179.1 157.3 147.9 132.7 23.1 23.0 22.9 22.7 -89.0 -110.0 -118.4 -133.0 -44.1 -44.3 -44.7 -45.2 -152.1 179.7 177.4 165.2 -18.8 -25.4 -21.4 -16.0 75.9 -163.9 -151.3 -154.2 ================================================================== 20 23 22 24 21 26 25 800 820 840 860 880 900 -60 -30 -40 -20 -50 0 -10 1.0 4.0 3.0 5.0 2.0 7.0 6.0 18 21 20 22 19 24 23 1.0 1.6 1.4 1.8 1.2 2.2 2.0 30 33 32 34 31 36 35 gain (db) reverse isolation (db) 1 db comp. (dbm) input/output vswr +25 oc 3rd order intermodulation distortion (dbm ) noise figure (db) input output 800 820 840 860 880 900 800 820 840 860 880 900 800 820 840 860 880 900 800 820 840 860 880 900 800 820 840 860 880 900 spectrum microwave 2144 franklin drive n.e. palm bay, florida 32905 ph (888) 553-7531 fax (888) 553-7532 spectrum microwave (europe) 2707 black lake place philadelphia, pa. 19154 ph (215) 464-4000 fax (215) 464-4001 www.spectrummicrowave.com
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