Available as: QBS-398, SMA Connectorized Housing
RF AMPLIFIER
MODEL QBS-398
Features
Spectrum Microwave can also customize this amplifier to
your unique requirements in a timely manner.
Customization and delivering prototypes with demanding
specifications is what separates Spectrum Microwave
from other power amplifier vendors.
High Power: +47 dBm Typical
High Gain: 48 dB Typical
Efficient Class AB Design
Environmental ScreeningAvailable
Specifications
Maximum Ratings
CHARACTERISTIC
TYPICAL
Ta= 25 ºC
MIN/MAX
Ta = -55 ºC to +85 ºC
Ambient OperatingTemperature ................-55ºC to +125 ºC
StorageTemperature .................................-62ºC to +150 ºC
CaseTemperature ..................................................+125 ºC
DCVoltage .......................................................... +30 Volts
Continuous RF Input Power .................................. +13 dBm
ShortTerm RF Input Power......50 Milliwatts (1 Minute Max.)
Maximum Peak Power .................... 0.5 Watt (3 μsec Max.)
Frequency
Gain (dB)
1805- 1880 MHz
48
1805- 1880 MHz
46 Min.
Power @ 1 dB
Comp. (dBm)
+47
50
+45.5 Min.
45 Min.
Reverse
Isolation (dB)
VSWR
Power
In
Out
1.5:1
1.5:1
2.0:1 Max.
2.0:1 Max.
Vdc
m A
+28
5000
+28
5200 Max.
Note: Care should always be taken to effectively ground the case of each unit.
Typical Performance Data
Reverse Isolation (dB)
Gain (dB)
60
45
30
15
0
36
35
34
33
32 Start 1805 MHz
Stop 1880 MHz
Stop 1880 MHz
Start 1805 MHz
Input VSWR
Output VSWR
1 dB Comp. (dBm)
+49
+48
+47
3.0
2.0
1.0
3.0
2.0
+46
+45 Start 1805 MHz
1.0 Start 1805 MHz
Stop 1880 MHz
Start 1805 MHz
Stop 1880 MHz
Stop 1880 MHz
Legend
+25 ºC
Rev.
7/27/10
Spectrum Microwave · 2144 Franklin Drive N.E. · Palm Bay, Florida 32905 · PH (888) 553-7531 · Fax (888) 553-7532
Spectrum Microwave · 2707 Black Lake Place · Philadelphia, Pennsylvania 19154 · PH (215) 464-4000 · Fax (215) 464-4001
www.SpectrumMicrowave.com