RF AMPLIFIER
MODEL
QBS-256
Features
!
!
!
!
High Gain: 24.0 dB Typical
High Power: +33 dBm Typical
Operating Temp. - 20 ºC
to +70
ºC
Environmental Screening Available
Available as:
QBS-256, Housing (E52-19500)
Maximum Ratings
Ambient Operating Temperature ................ -20 ºC to +70 ºC
Storage Temperature .............................. -55 ºC 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
µsec
Max.)
Note:
1.
Specifications are guaranteed when tested in a 50 Ohm system. Specifica-
tions indicated as typical are not guaranteed.
Specifications
CHARACTERISTIC
TYPICAL
MIN/MAX
Frequency
Gain (dB)
Gain vs. Temperature
Gain Flatness
Reverse Isolation (dB)
VSWR
In
Out
1 dB Compression (dBm)
Output Intercept point
3rd Order
2nd Order
Power
Vdc
mA
Ta= 25
ºC
1800 - 2000 MHz
24.0
± 1.0
1.5
-35
1.5:1
1.5:1
+33
+47
15
950
Ta = -20
ºC
to +70
ºC
1800 - 2000 MHz
+2.0/ -2.0 Max.
1.5:1 Max.
1.5:1 Max.
+32
+45
Min.
Min.
Typical Performance Data
28
27
26
25
24
23
22
1800
Gain (dB)
-10
-20
-30
-40
-50
-60
-70
Reverse Isolation (dB)
50
49
48
47
46
45
44
3rd order intermodulation distortion (dBm)
1850
1900
37
36
35
34
33
32
31
1800
1950
2000
1800
1850
1900
1.6
1950
2000
1800
1850
1900
1950
2000
1 dB Comp. (dBm)
Input/Output VSWR +25 ºC
1.5
1.4
1.3
Input
1.2
1.1
1.0
1850
1900
1950
2000
1800
1850
1900
Output
1950
2000
Legend
+ 25 ºC
FREQ.
MHz
+ 70 ºC - - - - - - -20 ºC
Linear S-Parameters Data
– – S11– –
dB
Ang
– – S21– –
dB
Ang
– – S12– –
dB
Ang
– – S22– –
dB
Ang
==================================================================
1800
-46.9 114.9
24.0
-20.8
87.5
-68.2
-23.1
25.4
94.5
1825
-46.6
24.1
-20.4
73.4
-91.0
-26.4
-77.5
72.7
1850
-47.0
24.3
-19.8
57.0
-113.9
-26.4
-120.6
61.4
1875
-46.3
24.4
-19.0
38.3
-137.1
-24.5
-138.3
42.1
1900
-45.4
24.5
-18.1
18.6
-160.8
-24.0
-153.9
13.4
1925
-45.6
24.5
-17.2
-2.2
175.3
-20.9
-167.2
-2.9
1950
-45.5
24.4
-16.4 -22.5
151.1
-18.9
179.3
-16.8
1975
-45.9
24.3
-15.7 -42.0
126.8
-18.0
171.1
-43.9
2000
-46.4
24.0
-15.0 -59.7
102.7
-17.3
162.0
Spectrum Microwave · 2144 Franklin Drive N.E. · Palm Bay, Florida 32905 · PH (888) 553-7531 · Fax (888) 553-7532
Rev.
1/29/07
www.SpectrumMicrowave.com
Spectrum Microwave (Europe) · 2707 Black Lake Place · Philadelphia, Pa. 19154 · PH (215) 464-4000 · Fax (215) 464-4001
SPECTRUM [ SPECTRUM MICROWAVE, INC. ]
