RadiMation Application Note 115
How to measuring Amplifier harmonics using RadiMation[edit]
In this application note we explain how you can use RadiMation to perform accurate measurement of the harmonics that are generated by an amplifier.
Overview[edit]
There are two ways to measure amplifier harmonics.
- Measure the initial power on the first harmonic and the rest of the harmonics with a spectrum analyser.
- Measure the initial power with a broadband power meter and measure the harmonics with a spectrum analyser.
A schema of the test setup:
Configuring the testsite[edit]
Using a spectrum analyser[edit]
To use only the spectrum analyser we need to configure the the Forward power meter to be the spectrum analyser device driver in the testsite. Keep in mind to not select any device for the sensor power meter on the second tab.
File:Harmonics Configure Spectrum analyser as power meter.PNG
Using a broadband powermeter and a spectrum analyser[edit]
When using the powermeter to setup the required testlevel and a spectrum analyser to measure the harmonics we need to setup the forward power meter to the power meter and on the devices 2 tab we select the spectrum analyser.
File:Harmonics Configure Broadband power meter.PNG
File:Harmonics Configure Spectrum Analyser as Sensor Power meter.PNG
Configuring the test[edit]
To start the harmonics test open a EUT file and choose the menu:
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Calibration
- EUT Calibration
- Harmonics
- Element
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Test results[edit]
In the test results it is possible to show the forward power measured. When only using a spectrum analyser this will be the same as the first harmonic and when also using the broadband power meter this of course will be the broadband power measured.
