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Model 10ST1G18A,
M1, M2
10 Watts CW
0.8-18 GHz
The Model 10ST1G18A is a self contained, forced air cooled, broadband hybrid solid state and traveling wave
tube (TWT) microwave amplifier designed for applications where low harmonic content is required in sub-band
ranges and where high gain and moderate power output are required. A reliable amplifier system provides a
conservative 10 watts minimum at the amplifier output connector with low harmonics. Stated power
specifications are at the fundamental frequency.
The amplifier's front panel digital display shows forward and reflected output plus extensive system status
information accessed through a series of menus via soft keys. Status indicators include power on, warm-up,
standby, operate, faults, excess reflected power warning and remote. Standard features include a built-in IEEE488 (GPIB) interface, 0dBm input, gain control, RF output sample port, VSWR protection for the TWT only, plus
monitoring of TWT helix current, cathode voltage, collector voltage, heater current, heater voltage, baseplate
temperature and cabinet temperature. The appropriate sub-band is user selected from either the front panel
menu or the GPIB interface. Modular design of the power supplies and RF components allow for easy access
and repair. Use of switching mode power supplies results in significant weight reduction.
Housed in a stylish contemporary cabinet this unit is designed for bench top use but can be removed from the
cabinet for rack mounting. The Model 10ST1G18A provides readily available RF power for a variety of
applications in Test and Measurement, (including EMC RF susceptibility testing), Industrial and University
Research and Development, and Service applications.
See Model Configuration for package alternatives.
10ST1G18A TYPICAL POWER OUTPUT
20
15
10
WATTS
5
0
0.5 2.5 4.5 6.5 8.5 10.5 12.5 14.5 16.5 18.5
LINEAR @ 1dB COMPRESSION
CW
FREQUENCY (GHz)
ar worldwide • rf/microwave instrumentation 120705
160 School House Road Souderton, PA 18964-9990 • 215-723-8181 • www.ar-worldwide.com Page 1 of 2
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SPECIFICATIONS
Model 10ST1G18A
POWER (fundamental), CW, @ OUTPUT CONNECTOR
Nominal ................................................................15 watts
Minimum ...............................................................10 watts
Linear @ 1dB Compression ....................................8 watts minimum, 0.8 – 4.2 GHz
5 watts minimum, 4.2 – 18 GHz
FLATNESS.....................................................................±3 dB maximum, 0.8 – 4.2 GHz
±9 dB maximum, 4.2 – 18 GHz
FREQUENCY RESPONSE ...............................................0.8 - 18 GHz in one of four selectable sub-bands
INPUT FOR RATED OUTPUT ..........................................1.0 milliwatt maximum
GAIN (at maximum setting) ...........................................40 dB minimum
GAIN ADJUSTMENT (continuous range).........................10 dB minimum (0.8 – 4.2 GHz)
35 dB minimum (4.2 – 18 GHz)
INPUT IMPEDANCE.......................................................50 ohms, VSWR 2.5:1 maximum
OUTPUT IMPEDANCE ...................................................50 ohms, VSWR 2.5:1 typical
MISMATCH TOLERANCE...............................................100% of rated power without foldback from 0.8 – 4.2 GHz.
Output power foldback protection above 4.2 GHz at reflected power exceeding
10 watts. Will operate without damage or oscillation with any magnitude and
phase of source and load impedance. May oscillate with unshielded open due to
MODULATION CAPABILITY...........................................Will faithfully reproduce AM, FM, or pulse modulation appearing on the input
NOISE POWER DENSITY (from 4.2 – 18 GHz)................Minus 80 dBm/Hz (maximum)
Minus 90 dBm/Hz (typical)
HARMONIC DISTORTION (in user selectable sub-band (at 10 watts)
Minus 20dBc maximum,
Minus 30dBc typical
PRIMARY POWER ..........................................................99-260 VAC
50/60 Hz single phase
700 VA maximum
CONNECTORS
RF input .................................................................Type N precision female on rear panel
RF output ...............................................................Type N precision female on rear panel
RF output sample port ............................................Type N precision female on rear panel
GPIB...................................................................... IEEE-488 female
Interlock ................................................................DB-15 female on rear panel
COOLING....................................................................Forced air (self contained fans), air entry and exit in rear.
E Must select one enclosure type from the following
[E1or E2 or E2S]:
E1 Removable outer enclosure, size 19.8 x 11.7 x
27 in., 50.3 x 29.7 x 68.6 cm. Add approximately 30
lb, 14 kg to weight of E2.
E2 Without outer enclosure size 19.0 x 10.5 x 27 in., 48.3
x 26.7 x 68.6 cm. Weight approximately 90 lbs., 41
kg.
E2S Enclosure removed for rack mounting: slides and front
handles installed, size same as E2. Add approximately
5 lbs, 2 kg to weight of E2.
coupling to input. Should not be tested with connector off.
signal. AM peak envelope power limited to specified power.
MODEL CONFIGURATION
MODEL FEATURE
10ST1G18A E1
10ST1G18AM1 E2
10ST1G18AM2 E2S
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