Port 1

Port 2

Port 3

Port 4

FEKO Project plate_32bit

Manual Port Synthesis/Characteristic Mode Port Synthesis: FEKO Plate Example

• Frequency: 600MHz – 800MHz with 50MHz spacing

• Input file “MANUAL_SYNTHESIS_INPUT.txt” or “CMPS_INPUT.txt”o project.mat (without the extension)

o Number of portso Port global index numbers (from CharM GUI)

o Port voltages (manual excitation) or CM coefficients (CM port synthesis) • Need to run CharM CM solver BEFORE MS/CMPS

o Use existing Y-matrix

2

Manual Synthesis (MS)/CMPS: Input/Output

CM computation parameters (e.g. matrix size, number of frequencies, etc) from the CharM CM solver

MS/CMPS executable

project.mat

MS/CMPS input file

MS/CMPS output files:• CM expansion, input impedance, Q, etc.

(MS_computation_parameters_project.txt)• Surface current due to manual voltage excitation

(MS_full_currents_project.txt)• Manual port voltages (MS_voltages_project.txt)• Y-matrix binary file (project.ymat)

Need AEM to convert MS_full_currents_project.txt into *.str and *.ffe files

Project directory before running Manual Port Synthesis.exe

Project directory after running Manual Port Synthesis.exe

3

MS/CMPS: Computation Parameters

Characteristic Mode coefficients of the surface current

Power radiated by the surface current

Q-factor of surface current

• MS/CMPS executables computes the CM expansion, power radiated, Q-factor, and active input impedances

• Plots of these quantities can be put in CharM