Expression of antenna's field

Antenna's electrostatic potential have the form:

\[ \phi\ant(s,\chi,\varphi,t)=h(s)\mathrm{Re}\Big(\sum_{\mu=1}^{N_\mu}A_\mu e^{\mathrm{i}(m_\mu\chi+n_\mu\varphi+\Phi_\mu)}(\alpha+\beta e^{\mathrm{i}\omega\ant t})\Big) \]

where \(h(s)\) is specified by nsel_profile input of antenna's namelist, \(\{m_\mu\}\) and \(\{n_\mu\}\) correspond to m and n inputs, \(\{A_\mu\}\) to amplitudes, \(\{\Phi_\mu\}\) to phases, \(\alpha\) to steady_coef, \(\beta\) to oscil_coef and \(\omega\ant\) to frequency. There is no need to specify the number of modes \(N_\mu\) as an input, it is given by the number of non-null \(A_\mu\) coefficients.

Similar expression holds for charge density.

Antenna's diagnostics

\( j\cdot E\ant \)...