270W Outdoor TWT Amplifier
for Satellite Communications
D BS- Band
The T03DO Series
270 Watt Outdoor
TWT Amplifier — high
efficiency in an
environmentally sealed
compact package
designed for outdoor
Easy to Maintain
Provides 270 watts of power in a rugged and
compact weatherproof package, digital ready,
for wideband, single- and multi-carrier satellite
service in the 17.3-18.4 GHz frequency band.
Ideal for transportable and fixed earth
station applications.
Modular design and built-in fault diagnostic
capability via remote monitor and control.
Cost Effective and Efficient
Mounting at the antenna improves performance
through minimized cable losses and saves cost in
system design. Employs a high efficiency, dualdepressed collector helix traveling wave tube,
reducing operating costs.
Global Applications
Meets International Safety Standard EN-60215,
Electromagnetic Compatibility 2004/108/EC
and Harmonic Standard EN-61000-3-2 to satisfy
worldwide requirements.
Worldwide Support
Backed by over two decades of satellite
communications experience, and CPI’s worldwide
24-hour customer support network that includes
sixteen regional factory service centers.
Designed and built to survive in extremely
adverse environmental conditions and features
increased cooling margin for longer life.
Simple to Operate
User-friendly microprocessor-controlled logic
with integrated RS422/485 computer interface.
Digital metering, pin diode attenuation and
optional integrated linearizer for improved
intermodulation performance.
811 Hansen Way
P.O. Box 51625, Palo Alto, CA 94303
tel: +1 (650) 846-3803
fax: +1 (650) 424-1744
e-mail: [email protected]
270W Outdoor TWT Amplif ier
Plays in the Rain
DB S - B a n d
17.3 to 18.4 GHz
Output Power
270 W min. (54.31 dBm)
235 W min. (53.71 dBm)
1100 MHz
42 dB min. at rated power output
(70 dB with SSIPA);
47 dB min. at small signal
(75 dB with SSIPA)
• Remote Control Panel
• Redundant and Power
Combined Subsystems
• External Receive Band
Reject Filter
• SSIPA with Variable
Attenuator (provides
RF Level Adjust Range of
0 to 30 dB)
• Integral Linearizer (requires
SSIPA option)
• Integrated 1:1 switch
control and drive
• L-Band Block Up Converter
(requires SSIPA option)
• Ethernet Interface
Electrical (continued)
Gain Stability
±0.25 dB/24hr max.
(at constant drive and temp.)
Small Signal Gain Slope
±0.04 dB/MHz max.
Small Signal Gain Variation
1.0 dB pk-pk across any 80 MHz band;
3.0 dB pk-pk across the 1100 MHz band
RF Level Adjust Range
30 dB typ.
Input VSWR
90-264 VAC, single phase;
47-63 Hz
Power Consumption
1.25 kW, typ.
1.5 kW, max.
Power Factor
0.95 min.
Environmental (Operating)
Ambient Temperature
-40°C to +55°C operating
(including solar loading) -40°C to +75°C non-operating
10,000 ft. with standard adiabatic
derating of 2°C/1000 ft., operating;
50,000 ft., non-operating
1.3:1 max.
Shock and Vibration
20 g pk, 11 msec, 1/2 sine
Output VSWR
1.3:1 max.
Acoustic Noise
65 dBA @ 3 ft. from amplifier
2.0 max. continuous operation; any value for
operation without damage
Residual AM
-50 dBc below 10 kHz
-20 [1.5 +log F(kHz)] dBc,
10 kHz to 500 kHz
-85 dBc above 500 kHz
Phase Noise
AC Fundamentals Related
Sum of Spurs
12 dB below IESS-308 continuous mask
-50 dBc
-47 dBc (370 Hz to 1 MHz)
AM/PM Conversion
2.5°/dB max. for a single carrier up to
7 dB below rated power (2.5°/dB max. at
4 dB below rated with linearizer)
Harmonic Output
-60 dBc at rated power
Noise and Spurious
(at rated gain)
<-150 dBW/4 kHz below 12.75 GHz
<-70 dBW/4 kHz from 17.3 to 18.4 GHz
<-65 dBW/4 kHz from 17.3 to 18.4 GHz
(with optional linearizer)
<-105 dBW/4 kHz from 18.9 to 26.0 GHz
<-125 dBW/4 kHz from 26.0 to 40.0 GHz
Noise Figure
35 dB max., 10 dB with SSIPA
-24 dBc max. with two equal carriers
at total output power 7 dB (4 dB with
optional integral linearizer) below rated
single-carrier output
For more detailed information, please refer to the corresponding CPI Technical Description.
Note: Specifications may change without notice as a result of additional data or product refinement.
Please contact CPI before using this information for system design.
Primary Power
100% condensing
Certificate Number: 30515
0.01 ns/MHz linear max.
0.001 ns/MHz 2 parabolic max.
0.5 ns pk-pk ripple max.
Relative Humidity
Mounting hardware is provided with each amplifier.
MKT 156, ISSUE 9
Group Delay
(in any 80 MHz band)
Forced air with integral blower
RF Input Connection
Type SMA female
RF Output Connection
WR 62 waveguide flange,
grooved with UNC 2B 6-32
threaded holes
RF Output Monitor
Type SMA female
Dimensions (W x H x D)
10.25 x 10.5 x 20.5 in.
(260 x 267 x 521 mm)
54 lbs (24.6 kg) max.,
with no options