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Please find some of the Radio Frequency (RF) calculators and Electromagnetics related information that you might find it useful. More electromagnetics tool would be added as the time permits

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Maxwell's Equations are twenty in total.

\(\begin{align} \oint \vec{E} \cdot d\vec{A} &= \dfrac{Q_{in}}{\epsilon_0} \, (\text{Gauss's law}) \label{eq1} \\[4pt] \oint \vec{B} \cdot d\vec{A} &= 0 \, (\text{Gauss's law for magnetism}) \label{eq2} \\[4pt] \oint \vec{E} \cdot d\vec{s} &= - \dfrac{d\Phi_m}{dt} \, (\text{Faraday's law}) \label{eq3} \\[4pt] \oint \vec{B} \cdot d\vec{s} &= \mu_0 I + \epsilon_0I + \epsilon_0 \mu_0 \dfrac{d\Phi_E}{dt} (\text{Ampere-Maxwell law}). \label{eq4} \end{align} \)

In 1865 James Clerk Maxwell actually derived 20 equations governing theory of electromagnetism [1]. Later in 1884, Oliver Heaviside using vector notation condensed 12 of the Maxwell's equations into famous four as shown above (Equations 1-4). Remaining eight deals with the circuit analysis.

- [1] Maxwell, J.C. (1865). VIII. A dynamical theory of the electromagnetic field. Philosophical Transactions of the Royal Society of London, [online] 155(155), pp.459–512. doi:https://doi.org/10.1098/rstl.1865.0008.