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RF AMPLIFIER
MODEL QB-991
Available as:
QB-991, SMA Connectorized Housing (080-22930)
Preliminary
Features
Ultra Broadband Amplifier with 14 db of Gain (Typical)
Noise Figure: 4 dB Typical
High Reverse Isolation
Single Supply Operation (Other Supply Voltages Available)
Absolute Maximum (No Damage) Ratings
Ambient Operating Temperature ...................... -40ºC to +85
Storage Temperature ................................. -65ºC to +125 ºC
DC Voltage .......................................................... +16 Volts
RF Input Power (CW)2 .......................................................................... +17 dBm
Specifications1
CHARACTERISTIC
Frequency
Gain (dB)
Gain var. Over Temp. (dB)
Gain Flatness (dB)
Reverse Isolation (dB)
VSWR
In
Out
Output Power @ 1 dB
Compression (dBm)
Noise Figure (dB)
Output Intercept Point (dBm)
3rd Order
Power
Vdc
mA
TYPICAL
MIN/MAX
Ta= 25 ºC
2 - 20 GHz
14
+0.5 / -0.5
+0.3
40
1.5:1
1.4:1
Ta = 25 ºC
2 - 20 GHz
13 / 15
+1.0 / -1.0
+0.75 Max.
30 Min.
2.0:1 Max.
2.0:1 Max.
+17
4.0
+14 Min.
6.0 Max.
+31
+12
140
+28 Min.
+12
155 Max.
Notes:
1. All specification ratings are based on measurements in a 50 ohm system
with a DC supply voltage tolerance of +1%.
2. RF output terminated into 50 ohms.
Outline Drawing
Typical Performance Data
Legend
+25 ºC
Rev.
Spectrum Microwave · 2144 Franklin Drive N.E. · Palm Bay, Florida 32905 · PH (888) 553-7531 · Fax (888) 553-7532 5/25/10
www.SpectrumMicrowave.com Spectrum Microwave · 2707 Black Lake Place · Philadelphia, Pennsylvania 19154 · PH (215) 464-4000 · Fax (215) 464-4001