Microstrip.h

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#ifndef MICROSTRIP_H
#define MICROSTRIP_H
 
#include "Schematic/structures.h"
#include <cmath>
#include <iostream>
#include <string>
 
class MicrostripClass {
  private:
    // Constants
    static constexpr double Z_FIELD =
        376.730313668; // Impedance of free space (ohms)
    static constexpr double PI        = 3.14159265358979323846;
    static constexpr double MAX_ERROR = 1e-7;
 
  public:
 
    struct SynthesisResults {
      double width;   // microstrip width (mm)
      double length;  // microstrip length (mm)
      double gap;     // for coupled lines (mm)
      double er_eff;  // effective permittivity
      double zl;      // characteristic impedance (ohms)
      double zl_even; // even mode impedance (ohms)
      double zl_odd;  // odd mode impedance (ohms)
      int iterations; // number of iterations used
 
      SynthesisResults();
    };
 
    MS_Substrate Substrate;
 
    SynthesisResults Results;
 
  public:
    MicrostripClass()  = default;
 
    ~MicrostripClass() = default;
 
    void calcMicrostrip(double width, double freq, double& er_eff, double& zl);
 
    bool synthesizeMicrostrip(double Z0, double e_length, double freq);
 
    double getMicrostripOpen(double Wh, double er, double er_eff);
 
    bool synthesizeCoupledMicrostrip(double zl_even, double zl_odd, double length,
                                     double freq);
 
    void calcCoupledMicrostrip(double width, double gap, double freq,
                               double& zl_even, double& zl_odd,
                               double& er_eff_even, double& er_eff_odd);
 
    void printResults(const std::string& title = "Results");
 
  private:
    static double dispersionKirschning(double er, double Wh, double freq,
                                       double& er_eff, double& zl);
};
 
#endif // MICROSTRIP_H