Available as: QB-761, Housing (E52-0187-2)
RF AMPLIFIER
MODEL QB-761
Features
Maximum Ratings
Ambient OperatingTemperature ................. -55ºC to +71 ºC
StorageTemperature ............................... -65ºC to + 125 ºC
CaseTemperature .................................................+ 125 ºC
DCVoltage ......................................................... + 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 µsec Max.)
ꢀ High Gain: 23.0 dB Typical
ꢀ High Power: +18 dBm Typical
ꢀ Environmental ScreeningAvailable
Specifications
CHARACTERISTIC
TYPICAL
MIN/MAX
Ta= 25 ºC
Note:
Frequency
Gain (dB)
806 - 870 MHz
1. Specifications are guaranteed when tested in a 50 Ohm system.
Specifications indicated as typical are not guaranteed.
23.0
±0.5
Gain vs. Temperature
Gain Flatness
1.0
Reverse Isolation (dB)
-39
VSWR
In
Out
1.5:1
1.5:1
1 dB Compression (dBm)
Output Intercept point
+18
3rd Order
2nd Order
+32
Noise Figure (dB)
3.5
+15
140
Power
Vdc
mA
Typical Performance Data
Noise Figure (dB)
Reverse Isolation (dB)
Gain (dB)
7.0
6.0
5.0
4.0
0
-10
26
25
24
23
22
-20
-30
-40
-50
-60
3.0
2.0
1.0
21
20
800
900
880
900
840
860
880
900
800
820
840
860
860
880
820
800
840
820
3rd order intermodulation distortion (dBm)
Input/Output VSWR +25ºC
1 dB Comp. (dBm)
24
23
22
2.2
2.0
1.8
1.6
36
35
34
33
32
31
30
21
20
19
18
Input
1.4
1.2
1.0
Output
900
900
860
880
880
900
800
840
840
860
880
820
800
820
860
840
800
820
Legend
+ 25 ºC
+ 71 ºC - - - - - - -55 ºC
Linear S-Parameters Data
FREQ.
MHz
– – S11– –
– – S21– –
– – S12– –
– – S22– –
dB Ang
dB
dB Ang
dB Ang
Ang
==================================================================
806
838
850
870
-17.3
-16.3
-16.0
-15.7
23.1
23.0
22.9
22.7
-44.1 -152.1
-179.1
157.3
147.9
132.7
-89.0
-110.0
-118.4
-133.0
-18.8
75.9
-44.3
-44.7
-45.2
179.7
177.4
165.2
-25.4 -163.9
-21.4 -151.3
-16.0 -154.2
03/11/05
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