calcTLPort

calcTLPort(port, SimDir, f, varargin)

Full definition:

[port] = calcTLPort( port, SimDir, f, varargin)

Calculate voltages and currents, the propagation constant beta and the characteristic impedance ZL of the given transmission line port.

The port has to be created by e.g. AddMSLPort().

input:

port: return value of e.g. AddMSLPort()
SimDir: directory, where the simulation files are
f: frequency vector for DFT

variable input:

‘RefImpedance’: - use a given reference impedance to calculate inc and ref voltages and currents - default is given port or calculated line impedance
‘RefPlaneShift’: - use a given reference plane shift from port beginning for a desired phase correction - default is the measurement plane - the plane shift has to be given in drawing units!
‘SwitchDirection’: 0/1, switch assumed direction of propagation

output:

output signals/values in time domain (TD):
- port.ut.tot total voltage (time-domain)
- port.ut.time voltage time vector
- port.it.tot total current (time-domain)
- port.it.time current time vector
output signals/values in frequency domain (FD):
- port.f the given frequency fector
- port.uf.tot/inc/ref total, incoming and reflected voltage
- port.if.tot/inc/ref total, incoming and reflected current
- port.beta: propagation constant
- port.ZL: characteristic line impedance
- port.ZL_ref used reference impedance

example:

port{1} = calcTLPort( port{1}, Sim_Path, f, 'RefImpedance', 50);

reference:

= W. K. Gwarek, “A Differential Method of Reflection Coefficient Extraction From FDTD Simulations”, IEEE Microwave and Guided Wave Letters, Vol. 6, No. 5, May 1996