Amplifier Research 200T1G3A

The Amplifier Research 200T1G3A is a self-contained, air-cooled broadband traveling wave tube (TWT) microwave amplifier delivering 200 W CW output across 0.8 GHz to 2.8 GHz instantaneously. This benchtop-configured unit features 53 dB minimum gain with 35 dB continuous adjustment range and operates at 1.0 mW input for rated output. Purpose-built for susceptibility testing and RF laboratory applications, it combines high instantaneous bandwidth with precise gain control and built-in output power foldback protection.

The amplifier accepts AM, FM, and pulse modulation, supports video pulse widths down to 0.05 μs, and includes IEEE-488 (GPIB) remote control as standard. Type N connectors serve RF input, output, and sample ports; forced-air cooling and 19-inch rack compatibility enable flexible deployment in test benches or integrated systems.

Technical Specifications

• Frequency Range: 0.8 GHz to 2.8 GHz (instantaneous)


• Output Power (CW): 200 W minimum


• Linear Output Power (1 dB compression): 50 W minimum


• Power Gain (maximum): 53 dB minimum


• Gain Adjustment: 35 dB continuous range


• Input for Rated Output: 1.0 mW maximum


• Input Impedance: 50 Ω, VSWR 2.0:1 maximum


• Output Impedance: 50 Ω, VSWR 2.5:1 typical Noise & Distortion


• Noise Power Density: −77 dBm/Hz typical, −72 dBm/Hz maximum


• Harmonic Distortion: −6 dBc typical, −3 dBc maximum Frequency Response


• ±12 dB maximum across 0.8 GHz – 2.8 GHz


• ±1.2 dB maximum across 1.0 GHz – 2.0 GHz Pulse Characteristics


• Minimum Pulse Width: 0.05 μs


• Maximum PRF: 100 kHz


• RF Rise/Fall Time: 30 ns maximum (10% to 90%)


• Pulse Delay: 300 ns maximum


• Pulse Width Distortion: ±30 ns maximum Power Supply


• Input: 190 – 260 Vac, 50/60 Hz, single phase


• Consumption: 200 W minimum, 242 W nominal, 2.5 kVA maximum

Key Features

• Mismatch tolerance operates without damage across any load impedance


• Output power foldback protection when reflected power exceeds 40 W


• VSWR protection included as standard


• Modulation support: AM, FM, and pulse


• Forced-air self-contained cooling with rear-panel airflow

Compatibility & Integration

• IEEE-488 (GPIB) interface for remote operation


• Type N female connectors (input, output, sample port)


• DB-15 female interlock connector


• Video monitoring via BNC connector


• 19-inch rack-mount capable