CPI T22XI 2.25 kW X-Band Indoor TWTA

CPI T22XI 2.25 kW X-Band Indoor TWTA

The CPI T22XI is a 2.25 kW X-band indoor traveling wave tube amplifier for fixed and transportable satellite uplinks. Covering 7.9–8.4 GHz, it delivers at least 2,000 W of CW output power at the flange and provides 1,000 W of linear power for multicarrier operation. Its integral linearizer and compact 9RU rack-mount design combine high output power with excellent linear performance.

Output Frequency Range: 7.9–8.4 GHz
Instantaneous Bandwidth: 500 MHz
TWT CW Output Power: 2,250 W (63.54 dBm) min.
Flange CW Output Power: 2,000 W (63.00 dBm) min.
Linear Output Power: 1,000 W
Gain: 70 dB min.
RF Level Adjustment Range: 0–30 dB typ. via PIN-diode attenuator, in 0.25 dB steps
Gain Stability: ±0.25 dB max. over 24 hours at constant drive and temperature after 30-minute warmup
Small-Signal Gain Slope: ±0.02 dB/MHz max.
Small-Signal Gain Variation: 1.0 dB peak-to-peak max. across any 40 MHz; 4.0 dB peak-to-peak max. across the 500 MHz band
Input/Output VSWR: 1.3:1 max.
Load VSWR: 2.0:1 max. for full specification compliance; operation without damage at any value
Phase Noise: 10 dB below the IESS-308/309 phase-noise profile
AC Fundamental Spurious: -50 dBc
Sum of Spurious Signals: -47 dBc
Maximum AC-Line Unbalance: 3%
AM/PM Conversion: 2.5°/dB max.
Harmonic Output: -60 dBc max.
Passband Noise Density: Less than -70 dBW/4 kHz
Intermodulation: -25 dBc max. at 1,000 W output power
Intermodulation Test Conditions: Two equal carriers spaced 5 MHz apart; measured relative to the sum of the carriers
Spectral Regrowth: -30 dBc at one-symbol offset with a 5.6 Msps signal at 1,000 W output power using the linearizer
Group Delay: 0.02 ns/MHz linear max.; 0.002 ns/MHz² parabolic max.; 0.5 ns peak-to-peak ripple max.
Primary Power: Three-phase with neutral and ground; 187–264 VAC ±10% or 342–456 VAC; 47–63 Hz, five-wire
AC Current Harmonic Content: Less than 20%, primarily fifth and seventh harmonics
Power Consumption: 7.0 kW max.
Power Factor: 0.95 min.; 0.99 typ.
Cooling: Forced air with integral blower
Maximum External Pressure Loss: 0.25 in. water gauge
Operating Temperature: 0°C to +50°C
Non-Operating Temperature: -54°C to +71°C
Relative Humidity: 95% non-condensing
Operating Altitude: Up to 10,000 ft. with standard derating of 2°C per 1,000 ft.
Non-Operating Altitude: Up to 50,000 ft.
Shock and Vibration: Designed for normal transportation per MIL-STD-810E, Section 514.4; withstands 20 g, 11 ms half-sine pulse while non-operating
RF Input: Type N female
RF Output: CPR-112G grooved waveguide flange, threaded UNF 2B 10-32
RF Output Monitor: Type N female
Standard M&C Interfaces: RS-232 and four-wire RS-422/485
Ethernet Interface: Available
Dimensions: 19 × 15.75 × 24 in. (483 × 400 × 610 mm)
Rack Height: 9RU
Weight: 165 lb. (74.8 kg) max.
Compliance: CE marked; EN 60215; EMC Directive 2014/30/EU; EN 61000-3-2; ISO 9001:2015 quality management

Key Features:

• 2.25 kW minimum X-band CW TWT output power

• 2,000 W minimum CW output power at the flange

• 1,000 W linear output power for multicarrier operation

• 7.9–8.4 GHz X-band frequency coverage

• 500 MHz instantaneous bandwidth

• Wideband satellite uplink operation

• Designed for fixed and transportable earth stations

• Compact 9RU rack-mount configuration

• High-efficiency dual-depressed collector helix TWT

• Integral linearizer for improved multicarrier performance

• -25 dBc maximum intermodulation at 1,000 W

• -30 dBc spectral regrowth at 1,000 W

• 70 dB minimum gain

• PIN-diode attenuation in 0.25 dB steps

• Microprocessor-controlled operation and digital metering

• Modular construction with built-in fault diagnostics

• Standard RS-232 and RS-422/485 interfaces

• Ethernet connectivity

• Optional integral block upconverter

• Optional redundant and hybrid power-combined systems

• Optional remote control panel

• Optional external receive-band reject filter

• Optional TWT LifeExtender/LifePredictor technology