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Abstract: IP3 is a well-known parameter that gauges linearity in radio frequency (RF) functions andcomponents. This tutorial will use basic math and graphics to explain how IP3 is generated and how itsvalues are linked to essential quantities, such as the input and output powers of a device. It will explainwhy high IP3 (thus, high linearity) is so important when evaluating high performance. Finally, it willdiscuss some high-performance analog ICs in which linearity, high IP3, is a fundamental measurementof their good operation.
