Amplifier Research 30W1000B

The Amplifier Research 30W1000B is a self-contained, air-cooled solid-state broadband amplifier engineered for radiated immunity testing and RF research applications. Operating across 1 MHz to 1000 MHz with instantaneous bandwidth, this portable 30-watt minimum output amplifier delivers 45 dB minimum gain and ±1.5 dB maximum gain flatness across its operating range. Push-pull circuitry in high-power stages ensures stability and low distortion, while harmonic content remains below -20 dBc.

The unit accepts RF input levels up to 1.0 mW for rated output and integrates RF input overdrive protection via limiting diodes and leveling circuitry. Over-temperature protection automatically removes DC voltage if cooling is compromised. A front-panel gain control enables convenient output adjustment.

The amplifier matches 50 Ohm impedance at input and output, operates reliably into any load impedance without foldback, and maintains greater than 45% efficiency. Digital display provides operational status and fault indication. IEEE-488 (GPIB), RS-232, Ethernet, and USB interfaces support both local and remote operation.

Technical Specifications

• Frequency Range: 1 MHz to 1000 MHz


• Rated Output Power: 30 watts minimum


• Maximum RF Input: 1.0 mW for rated output


• Gain (maximum setting): 45 dB minimum


• Gain Flatness: ±1.5 dB maximum


• Harmonic Distortion: 45%


• Input/Output Impedance: 50 Ohms


• Input Impedance (50 Ohm): Operates at 100% rated power without foldback into any load impedance

Key Features

• Push-pull high-power stage circuitry for enhanced stability and reduced distortion


• RF input overdrive protection with limiting diodes and leveling circuit


• Over-temperature protection with automatic DC voltage removal


• Front-panel gain control for output level adjustment


• Digital display for status and fault indication


• Modulation capable

Typical Applications

• Radiated immunity and EMI susceptibility testing


• RF source for MRI research studies


• Driving frequency multipliers and high-power amplifiers


• Research and development


• Laboratory testing

Compatibility & Integration

• Control Interfaces: IEEE-488 (GPIB), RS-232 (asynchronous, full duplex), Ethernet, USB


• RF Connector: Type N (SMA Female)


• Form Factor: 19-inch rack-mountable, 3U height


• Dimensions: 50.3 × 15.5 × 37.6 cm


• Weight: Approximately 25 lbs


• Cooling: Self-contained air-cooled