TOPICA Results

TOPICA Utilities

TopicaResult(filename[, z0, deemb])

TOPICA result.

class west_ic_antenna.topica.TopicaResult(filename: str, z0: float = 50, deemb: float = 0)[source]

TOPICA result.

TOPICA result object, which provides convenience methods.

Parameters:

filename (str) – filename of the Impedance ascii file generated by TOPICA
z0 (float, optional) – characteristic impedance of the port in Ohm (default: 50)
deemb (float, optionnal) – de-embedding length to take into account (in meter)

Rc(I: list = [1, -1, -1, 1]) → ndarray[source]

Calculate the coupling resistance of the TOPICA Z-matrix for a given current excitation.

Coupling resistance is defined as in [1]

Parameters:: I (list) – Current excitation at port. Default is [1, -1, -1, 1], ie. dipole phasing of 2x2 straps antenna
Returns:: Rc – Coupling Resistance
Return type:: numpy.ndarray

References

property raw_data: str

raw TOPICA data from txt file

Returns:: data – raw TOPICA data : [index_row, index_col, real_z, z_imag]
Return type:: array

property s: ndarray

Get the scattering parameters as an NxN array, N being the number of ports.

Does NOT take into account possible deembbeding.

to_network(skrf_frequency: Frequency, name: str = 'front-face') → Network[source]

Convert into a skrf Network.

Assume the scattering parameters of the network are the same for all the frequencies of the network.

Parameters:

skrf_frequency (skrf.frequency.Frequency) – Frequency of the network (for compatibility with skrf)
name (string, optional) – name of the network. Default is ‘front-face’

Returns:

network

Return type:

skrf.network.Network

write_touchstone(filename: str, skrf_frequency: Frequency, name: str = 'front-face')[source]

Write the scattering parameters into a Touchstone file format.

(.sNp where N is the number of ports).

Parameters:

property z: ndarray

Get the impedance matrix as an NxN array, N being the number of ports.

property z0: ndarray

Characteristic Impedance of the TOPICA Model’s ports