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Features
Preamplier
PAM-118A
Ultra Wideband -
High Gain -
Flat Response -
Low Noise Figure -
P
@ 1 dB Gain Compression -
out
Battery Powered
Description
The PAM-118A is a wideband, high gain, bench top
microwave preamplier. The PAM-118A has a frequency range of 500 MHz to 18 GHz. This preamplier
is primarily intended for EMC applications; However,
it may be used for other application that require low
noise and high signal amplication.
The simple front panel consists of two 50 Ohm
matched precision N-connectors for input and output. The preamplier was designed to have at gain
with minimal variation over the entire frequency
range. The at gain helps in taking fast adhoc readings during troubleshotting, R&D phase. The high
gain and low noise gure of PAM-118A increases
system sensitivity of eectively all measurement
systems. It is very eective in measuring low level
signals during Electromagnetic Interference (EMI)
testing. It has low VSWR and high reverse isolation.
Each preamplier is individually calibrated using
equipment traceable to National Institute of Standards and Technology. Individual data and certicate
of calibration is shipped with each unit. The PAM118A is battery powered to avoid any noise eects
of power cables. It can also be powered by 15 VDC,
500 mA power adapter (provided with the unit).
500 MHz to 18 GHz
40 dB minimum
+ 2.5 dB
3 dB max
+12 dBm
Application
The PAM-118A preamplier increases system sensitivity enhancing the capability of measurement system
to measure low level signals. It also provides input
isolation to your spectrum analyzer or receiver.
During EMC measurements the antennas are usually placed at a distance of 1 to 10 meters from the
equipment under test. Most antennas operating
above 1 GHz typically have high antenna factors.
In addition, the long interconneting cables, especially operating in the microwave frequencies have
high cable loss. These factors makes it dicult to
distinguish low level signal from the noise oor of
the spectrum analyzer / receiver. The preamplier
improves system sensitivity by amplifying the signals
before they reach the spectrum analyzer / receiver
input thereby improving the signal to noise ratio.
The system sensitivity can be further improved by
connecting the preamplier as close as possible
to the the antenna output. This eliminates the attenuation of the signal due to long cable length
before the preamplier gets a chance to amplify it.
The reduced cable length from antenna output to
preamplier input drastically improves the overall
system sensitivity. The battery powered PAM-118A
allows placing the preamplier very close to the
receiving antenna without possible introduction of
interference from power cables.
Com-Power Corporation 114 Olinda Drive, Brea, California 92823 (714) 528 - 8800 www.com-power.com
Rev: A, Issue: 11-12
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Specications
30
35
40
45
50
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
Gain (dB)
Frequency (GHz)
Frequency Range 500 MHz to 18 GHz
Gain 40 dB
Gain atness + 2.5 dB
RF Input/output
VSWR ( Input/Output) 2.2:1 (max)
Noise Figure
Pout @ 1dB comp +12 dBm (min)
DC input 0 Vdc (max)
Reverse isolation 40 dB (typical)
DC Power supply +15Vdc, 500 mA
Size 7.7 x 6.5 x 3.2 inches (184 x 156 x 77 mm)
Weight 2.5 lbs (1.1 Kg)
All values are typical values unless otherwise specied.
Specications are subject to change without notice.
50Ω Precision N- type female
<3 dB @ 25
o
c
Preamplier
PAM-118A
Preamplier Gain (typical)
Com-Power Corporation 114 Olinda Drive, Brea, California 92823 (714) 528 - 8800 www.com-power.com
Rev: A, Issue: 11-12
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