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Engineering Notes


RF POWER AMPLIFIERS TECHNICAL REFERENCE MATERIAL


Third Order Intercept Point IP3 or TD1


The intercept point (IP) is an imaginary point where the slopes of the fundamental,
2nd order IMD and 3rd order IMD meet.

rf amplifiers intercept point

Rules of thumb:

1. IP is 10 dB above 1 dB compression point.
2. IP is defined for Class A amplifiers only.