The Second-order intercept point, also known as the SOI, IP2, or IIP2 (Input intercept point), is a measure of linearity that quantifies the second-order distortion generated by nonlinear systems and devices.

IP2 (Second Order Intercept Point) and IP3 (Third Order Intercept Point) are used to measure performance of the non-linear devices. The figure depicts block diagram of IM2 (Second Order Intermodulation Product) measurement setup. It shows W a and W b as fundamental frequencies.

Discover IP2 and IP3, including IIP2 and IIP3 formulas. Learn how to calculate second and third-order intercept points and their importance in RF systems.

Dec 19, 2024 · We can model the transfer function of any nonlinear element as a Taylor series: where x (t) is the input signal consisting of both desired and undesired signals. Consider only the second order distortion term for this analysis. The coefficient a 2 is equal to. where IP2 is the single tone intercept point in watts.

Feb 19, 2019 · The Second Order Intercept Point (IP2) is a hypothetical point where the power of second order components will reaches the same level as the power of the fundamental components.

Mar 1, 2002 · Two-tone vs. Single-tone Measurement of Second-order Nonlinearity. This article describes how to correctly find the second-order intercept point (IP2) from one- and two-tone tests, and presents measurement results in support of the theory. Relation Between Two-tone and One-tone Tests For Second-order Nonlinearity.

Calculating the cascaded values for 2nd-order intercept point (IP2) for the system budget requires use of ratios for gain and power levels for IP2 (do not use dB and dBm values, respectively). The standard format for indicating decibel values is to use upper case letters; i.e., IP2 for units of dBm.