Overview
The ETM 400Ku TWT Amplifier is a high-power Ku-band solution designed for demanding RF and EMC testing environments. Covering the 13.75–14.50 GHz frequency range, this amplifier delivers strong and stable signal amplification suitable for satellite communications, radar systems, and high-frequency test setups.
EMC Shop customers commonly use this amplifier in RF test systems where high output power and consistent gain are required. Its traveling wave tube (TWT) design enables efficient broadband amplification, making it ideal for applications involving continuous operation and high-frequency signal integrity.
In practical use, engineers rely on the ETM 400Ku for satellite uplink testing, system validation, and troubleshooting RF performance issues. The amplifier’s robust construction and integrated cooling system ensure dependable operation in both laboratory and field environments.
| Frequency | 13.75 – 14.50 GHz (Ku-Band), 17.3 – 18.3 GHz (Ka-Band DBS) |
| Output Power at Flange | 325 W typical (Ku-Band), 275 W typical (Ka-Band) |
| Amplifier Gain | 60 dB min (rated power), 50 dB min (rated power, Ka-Band) |
| Small Signal Gain Variation | ±2 dB max (Ku-Band), ±9 dB max (Ka-Band) |
| Small Signal Gain Slope | ±0.03 dB/MHz max |
| Gain Stability | ±0.25 dB over 24 hours |
| Gain Adjustment Range | 0–35 dB (continuous) |
| Intermodulation | -24 dBc max at 7 dB backoff (Ku-Band) |
| AM to PM Conversion | 8°/dB at rated power |
| Harmonic Output | -60 dBc max |
| Residual AM | -50 dBc (<4 kHz), -85 dBc (>500 kHz) |
| Phase Noise | Meets IESS-308 |
| Noise & Spurious | -65 dBW / 4 kHz max |
| Phase Linearity | ±0.1 rad (500 MHz), ±0.05 rad (40 MHz) |
| Group Delay | 0.05 ns/MHz (linear) |
| VSWR | Input: 1.30:1, Output: 2.0:1, Load: 1.50:1 |
| Power Requirements | 99–255 VAC, 50/60 Hz, Single Phase |
| Dimensions | 19" W × 5.25" H × 24" L |
| Weight | 68 lbs |
| RF Connectors | Type-N (Input), WR-62 (Output), Type-N (Sample Port) |
| Cooling | Built-in forced air with integral fan |
| Operating Temperature | 0°C to 50°C |
| Storage Temperature | -40°C to 70°C |
| Altitude | Up to 10,000 ft |
| Humidity | Up to 95% non-condensing |
| Shock & Vibration | Normal transportation conditions |
| Interface | RS-422 / RS-485 |
| Display | 4-line, 20-character Vacuum Fluorescent Display |
| Monitored Parameters | Forward Power, Reflected Power, Cathode Voltage, Helix Current, Filament Voltage & Current, Collector Voltage, Temperature |
| Warnings | Over/Under Forward Power, Over Reflected Power, Over Helix Current, Over Temperature |
