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Engineering Notes


RF POWER AMPLIFIERS TECHNICAL REFERENCE MATERIAL


Multitone IMD Monograph


This nomograph is valid for non push-pull Class A amplifiers only.

Example:

IP = +60 dBm and we have:
1 ea. 1 W Carrier
Or 2 ea. 0.25 W Carriers
Or 3 ea. 0.11 W Carriers
etc. = 1 W PEP (+30 dBm PEP)

IMD2 = 30 dBc
IMD3 = 60 dBc

Note: Push-Pull Class A amplifiers
have a better IMD2.

rf amplifiers multitone imd monograph