Amplifier Research PH2000

The Amplifier Research PH2000 is a high-power RF power head that converts incident RF power into equivalent voltage for precision measurement and analysis. Engineered as a front-end sensor for the PM2002 Power Meter, the PH2000 delivers accurate power measurement across wide frequency ranges with minimal drift and noise. Its 50 ohm impedance design minimizes mismatch errors, ensuring measurement integrity in demanding RF environments.

Technical Specifications

• Frequency Range: 10 kHz to 8 GHz


• Dynamic Range: −60 dBm to +20 dBm


• Maximum RF Input: 300 mW (1 Watt for 1 ms pulses)


• Power Linearity Uncertainty (at 50 MHz): 1% below 10 dBm; 3% from 10 to 20 dBm


• High Frequency Power Linearity Uncertainty (worst case, after 2-hour warmup): (0.005 × f) dB per dB above +4 dBm, where f is in GHz


• Flatness: ±1.5 dB typical; ±2.0 dB maximum Physical & Environmental


• Impedance: 50 ohm


• Sensor Type: Dual Diode


• Standing Wave Ratio (SWR): 1.12 to 1.40


• Temperature Influence: 0.02 dB/°C (0–25°C)


• Pulse Characteristics: Maximum 30 W·µs per pulse; 300 W·µs per pulse (thermocouple, at 25°C)


• Dimensions: 19.8 × 11.2 × 29.5 in


• Weight: 130 lbs Calibration


• NIST-traceable calibration factors supplied with each unit

Key Features

• Dual diode sensor architecture for stable, low-drift measurements


• Broad frequency coverage from 10 kHz through 8 GHz


• Precision linearity across the dynamic range with quantified uncertainty limits


• Rugged construction rated for laboratory and field deployment


• Supplied 5 foot power head cable and data adapter

Typical Applications

• Radiated immunity testing


• Conducted immunity testing


• RF power validation in communication systems


• Scientific measurement requiring NIST-traceable power data


• EMC testing environments

Compatibility & Integration Designed for primary integration with the Amplifier Research PM2002 Power Meter. Compatible with spectrum analyzers and other power measurement instruments via standard RF connectors.