/*
 * microstrip.h - microstrip class definition
 *
 * Copyright (C) 2001 Gopal Narayanan <gopal@astro.umass.edu>
 * Copyright (C) 2005 Stefan Jahn <stefan@lkcc.org>
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this package; see the file COPYING.  If not, write to
 * the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
 * Boston, MA 02110-1301, USA.
 *
 */

#ifndef __MICROSTRIP_H
#define __MICROSTRIP_H

class MICROSTRIP : public TRANSLINE
{
public: MICROSTRIP();

    friend class C_MICROSTRIP;

private:
    double h;                   /* height of substrate */
    double ht;                  /* height to the top of box */
    double t;                   /* thickness of top metal */
    double rough;               /* Roughness of top metal */
    double mur;                 /* magnetic permeability of substrate */
    double w;                   /* width of line */
    double l;                   /* length of line */
    double Z0_0;                /* static characteristic impedance */
    double Z0;                  /* characteristic impedance */
    double ang_l;               /* Electrical length in angle */
    double er_eff_0;            /* Static effective dielectric constant */
    double er_eff;              /* Effective dielectric constant */
    double mur_eff;             /* Effective mag. permeability */
    double w_eff;               /* Effective width of line */
    double atten_dielectric;    /* Loss in dielectric (dB) */
    double atten_cond;          /* Loss in conductors (dB) */

    /* private params */
    double Z0_h_1;      /* homogeneous stripline impedance */

public:
    void   analyze();
    void   synthesize();

private:
    double er_eff_freq();
    double alpha_c();
    double alpha_c_roughness();
    double alpha_dielectric();
    double char_impedance_ht();
    double synth_width();
    double ereff_dispersion();
    double Z0_dispersion();
    double Z0_homogeneous( double );
    double delta_Z0_cover( double, double );
    double filling_factor( double, double );
    double delta_q_cover( double );
    double delta_q_thickness( double, double );
    double e_r_effective( double, double );
    double delta_u_thickness( double, double, double );
    double e_r_dispersion( double, double, double );
    double Z0_dispersion( double, double, double, double, double );
    double conductor_losses();
    double dielectric_losses();
    void   microstrip_Z0();
    void   dispersion();
    void   attenuation();
    void   mur_eff_ms();
    void   line_angle();
    void   calc();
    void   get_microstrip_sub();
    void   get_microstrip_comp();
    void   get_microstrip_elec();
    void   get_microstrip_phys();
    void   show_results();
};

#endif /* __MICROSTRIP_H */