Amplifier Research 10S1G4A

The Amplifier Research 10S1G4A is a solid-state, air-cooled RF power amplifier delivering 10 watts minimum CW output across 0.8 GHz to 4.2 GHz instantaneous bandwidth. With 40 dB gain and front-panel control, it is a primary amplifier or driver stage for laboratory and industrial RF systems. The unIt has stable, repeatable performance in EMC testing, component characterization, and wattmeter calibration without risk of oscillation under any load condition.

Technical Specifications

Frequency Range: 0.8 GHz to 4.2 GHz (instantaneous) Output Power: 10 W CW minimum; 16 W at compression; 18 W nominal @ 3 dB compression Gain: 40 dB, adjustable down 10 dB or more via front-panel control Impedance: 50 ohms VSWR: 2.0:1 maximum Flatness: ±1.5 dB typical Harmonic Distortion: −20 dBc maximum (10 W and 15 W) Third Order Intercept Point (IP3): 52 dBm typical Spurious Output: −73 dBc typical Phase Linearity: ±1 deg/100 MHz typical RF Input Drive: 1.0 mW maximum for rated output Power Consumption: 250 W nominal Primary Power: 90–264 VAC (automatic selection), 50/60 Hz, single phase

Key Features

• Mismatch-tolerant architecture operates without damage or oscillation with any load impedance magnitude or phase


• Over-temperature and over-current protection with RF input leveling to prevent overdrive


• Multiple remote control interfaces: IEEE-488 (GPIB), RS-232, USB, Ethernet, fiber optic


• Digital display provides real-time status and fault indication


• Local/Remote control selection on front panel

Typical Applications

• EMC and radiated immunity testing


• RF component characterization and validation


• Power meter and sensor calibration


• Driver amplifier for frequency multipliers and higher-power stages

Compatibility & Integration Full command and monitoring capability via IEEE-488, RS-232, USB, Ethernet, and fiber optic links. Local control through dedicated front-panel interface with gain adjustment and operational mode selection.