The Amplifier Research 350S1G4 is a solid-state, air-cooled RF amplifier delivering 350 watts minimum continuous-wave output across 0.8 GHz to 4.2 GHz instantaneously. Engineered for EMC testing, wireless component validation, and communication systems development, this broadband amplifier combines high linearity with exceptional mismatch tolerance, operating without damage or oscillation across any source and load impedance condition. It functions as a standalone test instrument or as a driver stage in integrated multi-kilowatt systems.
Technical Specifications
Frequency and Power:
• Frequency range: 0.8 GHz to 4.2 GHz instantaneously
• Rated output power: 350 W minimum (CW)
• Maximum input for rated output: 1.0 mW
• Harmonic distortion: −20 dBc maximum at 325 watts
• Third order intercept point: 65 dBm typical
• Spurious: −73 dBc typical
Gain and Impedance:
• Gain (maximum): 55.5 dB minimum
• Gain adjustment range: 15 dB minimum
• Input impedance: 50 ohms, VSWR 2.0:1 maximum
• Output impedance: 50 ohms nominal
Linearity and Modulation:
• Phase linearity: ±1 deg/100 MHz typical
• Modulation support: AM, FM, and pulse modulation reproduced faithfully
Impedance Mismatch:
• Rated power delivery: 100% without foldback
• Mismatch tolerance: Operates without damage or oscillation with any magnitude and phase of source and load impedance
Power Requirements:
• Primary power: 90–132 VAC or 180–264 VAC, 50/60 Hz, single phase (automatically selected)
– Key Features
• High-linearity design ensures accurate signal reproduction across the operating band
• Instantaneous bandwidth eliminates tuning delay for wideband test scenarios
• Exceptional mismatch tolerance eliminates risk of amplifier shutdown due to load impedance variations
• Integrated attenuation control supports gain adjustment of 15 dB minimum
– Typical Applications
• EMC testing (radiated and conducted immunity)
• Wireless communication component and subsystem validation
• CDMA, W-CDMA, TDMA, and GSM system testing
• Research and development across multiple frequency bands
– Compatibility & Integration
The 350S1G4 integrates as a sub-amplifier into higher-power configurations, including 600-watt, 900-watt, and 1200-watt systems, enabling scalable test architectures.
