How to Calibrate an RF Low-Noise Amplifier Test System

RF Low Noise Amplifier Calibration Process

1. Preparing for Calibration

Equipment Status Check

Verify all test system equipment is functional
Confirm signal generator, power meter, and noise figure analyzer are operational
Ensure equipment has passed regular measurements

Environmental Setup

Place system in constant temperature/humidity environment
Avoid strong electromagnetic interference
Prevent environmental factors affecting calibration accuracy

Standard Components Preparation

Prepare standard attenuators and noise sources
Verify parameters are accurate and within validity period
Ensure reliable reference for subsequent calibrations

2. Signal Chain Calibration

Signal Amplitude Calibration

Directly connect signal generator to power meter
Output standard RF signals of different frequency bands
Record power meter measurements and compare differences
Adjust equipment parameters to align with standard values

Passive Components Measurement

Connect RF cables and connectors to test system
Measure signal attenuation through components
Incorporate attenuation values into test data corrections
Ensure accuracy of signal chain transmission characteristics

3. RF Low Noise Amplifier Noise Figure Calibration

Noise Figure Analyzer Calibration

Use standard noise source to calibrate noise figure analyzer
Set up analyzer according to standard noise source parameters
Measure output noise power of standard noise source
Compare measured values with theoretical values
Adjust analyzer calibration factor to minimize deviation

RF Low Noise Amplifier Testing

Connect RF low-noise amplifier to test link
Use calibrated noise figure analyzer and standard attenuator
Correct for test link's own noise contribution
Ensure accuracy of amplifier's noise figure measurement

4. Calibration Verification & Documentation

Verification Process

Select standard RF low-noise amplifier with known performance
Connect to calibrated test system for testing
Compare test results with standard parameters
Validate calibration if deviation is within specified range

Documentation Requirements

Record device parameters and calibration steps
Document measurement data and deviations
Create complete calibration record for traceability
Ensure test system maintains stable calibration state

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