Measurement of Residual Phase Noise of Amplifiers at 80 GHz Using Interferometric Measurement Technique

Topics Covered

Interferometric Measurement Technique
Measurement Setup and Instrumentation
Power Amplifier Phase Noise and Small Signal Approach

Application Note Overview

This paper describes the measurement of additive/residual phase noise of power amplifiers or multipliers for example for automotive RADAR sensors at 80 GHz using the interferometric measurement approach in combination with a phase noise and VCO tester R&S FSWP.

The setup provides a way to characterize the additive/residual phase noise of amplifiers down to -150 dBc/Hz at 100 kHz offset even in the microwave range at 80 GHz.

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