Instruments For Industry (IFI) has made available an application note that highlights issues when choosing a power amplifier for your immunity test applications such as regulatory burden and system loss profile.
In another application note (available once the short questionnaire is filled out in the link below), IFI briefly explored the basics of how to choose a power amplifier for your immunity test applications. The explanation and information included antenna selection, determination of system losses and the corresponding minimum power required to generate the drive table.
Also discussed was the additional power required to linearly support the 5.1 dB increase in signal level from the 80% modulation that is applied during the actual test.
Here are some highlights of the basic issues mentioned:
• What is your regulatory burden?
• What level must you test to?
• What is the system loss profile? How much power will be lost in the system before it finally reaches the antenna? (Coax, connectors, RF switches, etc.)
• How much power do you really need to properly run your tests? Don’t forget to allow headroom for the additional 5.1 dB of modulation!
• Do you have a plan for routine maintenance of your amplifier and test system?
To download, click here.
