CPI 400W Ku-Band Travelling Wave Tube Amplifier TWTA 12.75-15.20GHz VZU-6994AD
The CPI TWTA Ku-band model VZU6994AD provides 400 watts of power in a 3 rack unit package, digital ready, for wideband, single- and multi-carrier satellite service in the Ku-band frequency band. Ideal for transportable and fixed earth station applications where space and prime power are at a premium.
The VZU6994 employs a high efficiency dual-depressed collector helix traveling wave tube backed by many years of field-proven experience in airborne and military applications. This TWTA is user-friendly microprocessor-controlled logic with integrated computer interface. Digital metering, pin diode attenuation and optional integrated linearizer for improved intermodulation performance.
The VZU6994AD meets International Safety Standard EN-60215, Electromagnetic Compatibility 89/336/EEC and Harmonic Standard EN-61000-3-2 to satisfy worldwide requirements. Its is easy to maintain due to the modular design and built-in fault diagnostic capability with convenient and clearly visible indicators behind front panel door for easy maintainability in the field.
Electrical Specifications VZU-6994
Frequency: 13.75 to 14.50GHz,
Output Power TWT: 400W min. (55.44dBm), 13.75 to 14.5GHz and 13.75 to 14.80GHz
350W min. (56.02dBm), all others
Output Power Flange: 338W min. (54.39dBm), 13.75 to 14.5GHz and 13.7\5 to 14.80GHz
275W min. (55.31dBm), all others
Bandwidth: 500 to 1,750MHz depending on configuration
Gain: 73 dB min. at rated power output; 78 dB min. at small signal
RF Level Adjust Range: 0 to 20 dB
Gain Stability: ±0.25 dB/24hr max. (at constant drive and temp.)
Small Signal Gain Slope: ±0.015 dB/MHz max.
Small Signal Gain Variation: 1.0dB pk-pk across any 80MHz band; 2.5dB pk-pk across the 750MHz band
Input VSWR: 1.3:1 max.
Output VSWR: 1.3:1 max.
Load VSWR: 2.0:1 max. operational; any value for operation without damage
Residual AM: -50dBc below 10 kHz
-20[1.3 +log F(kHz)] dBc,
10kHz to 500kHz
-85dBc above 500 kHz
- IESS Phase Noise Profile: -6dBc
- AC Fundamental: -36dBc
- Sum of All Spurs: -47dBc
AM/PM Conversion: 2°/dB max. for a single carrier at
8dB below rated power
Harmonic Output: -60dBc at rated power, second and third harmonics
Noise and Spurious: <-150dBW/4 kHz in Receive Reject band
(at rated gain) < -65dBW/4 kHz in Passband to 18GHz
< -60dBW/4 kHz in Passband w/linearizer
Noise Figure: 10dB max.
Intermodulation: -24dBc max. with two equal carriers at total output power 7dB (4 dB with optional integral linearizer) below rated single-carrier output; -22dBc max. at 7dB 080 (4dB W/h) for 14.7-15.2GHz config.
Group Delay: 0.01ns/MHz linear max.
(in any 80 MHz band) 0.001ns/MHz2 parabolic max.
0.5ns pk-pk ripple max.
Primary Power: 100 - 240VAC ±10%, single phase 47- 63 Hz (100VAC optional)
Power Consumption: 0.85kVA, typ.
Power Factor: 0.95 min.