help.html

This is the procedure for lab 1. This is a two-week lab. Prelab should be done BEFORE going to the l

         </p>
         <h2>Real/Absolute values<a name="13"></a></h2>
         <p>This pop-up menu allows to choose if real or absolute values of the field should be displayed in the output windows.</p>
         <h2>Animate fields<a name="14"></a></h2>
         <p>If this option is selected, the bottom right-hand window shows the variation of the fields with time. The effect of such an
            options can be appreciated only if real values of the fields are calculated.
         </p>
         <h2>Calculation details<a name="15"></a></h2>
         <p>If this option is selected, a figure is opened providing details of the calculations preformed by the GUI. Specifically, each
            material is represented through its equivalent transmission line model and several quantities are shown/calculated:
         </p>
         <div>
            <ul>
               <li>the electromagnetic characteristics of the media (relative electric permittivity and magnetic permeability, electric conductivity);</li>
               <li>intrinsic impedance associated to the TE/TM wave;</li>
               <li>the wavelength, the phase constant and the absorption coefficient;</li>
               <li>the reflection coefficients at each interface (defined with respect to the intrinsic impedance of both materials determining
                   the discontinuity).</li>
            </ul>
         </div>
         <p>A maximum number of 12 materials can be defined as long as this option is selected.</p>
         <h2>Calculate<a name="16"></a></h2>
         <p>This button starts a new calculation of the wave propagation. When a new input parameter is provided to the GUI, the change
            will apply only after the request for a new calculation.
         </p>
         <h2>Stop animation<a name="17"></a></h2>
         <p>This button stops the calculation of the field variation with time.</p>
         <h2>Help<a name="18"></a></h2>
         <p>This button opens this brief guide.</p>
         <p class="footer"><br>
            Version 1.0 - Last update(dd/mm/yyyy): 3/9/2007<br></p>
      </div>
      <!--

##### SOURCE BEGIN (MORE OR LESS) #####
%% TE/TM PLANE WAVE PROPAGATION THROUGH MULTILAYERED STRUCTURES: A QUICK GUIDE
% This guide provides a brief reference to the Graphical User Interface
% (GUI) that implements the propagation of a TE(Transverse Electric)/
% TM(Transverse Magnetic) plane wave through a
% multilayered structure of media with different electromagnetic
% characteristics. The incident wave is a TE/TM plane wave in the the zy plane
% (sinusoidal regime with temporal convention exp(j*omega*t)),
% traveling from +z towards -z.
%
% The GUI has four main output windows displaying the x component of the field,
% specifically the electric field or the magnetic field when a TE or a TM
% wave is considered, respectively. The top left-hand figure shows the total
% field, superposition of the progressive and of the regressive waves, which,
% on turn, are depicted in the top right-hand and in the bottom left-hand
% figures. Finally, the bottom right-hand figure shows the field values
% corresponding to a vertical cut of the plane, specifically for y=0 m.
%
%% Run the GUI
% To launch the GUI, open Matlab and simply type 'PlaneWaveGUI'.
%
%% Frequency
% This field allows to input the frequency of the plane wave, expressed in
% Hz. Obviously only positive values are accepted.
%
%% Electric permittivity
% This field allows to specify the values of the relative electric permittivity
% associated to the materials defined. Each entry of the vector refers to
% a medium, starting from the one defined in the semispace z>0 m. In fact, at
% least two materials should be defined, whose interface is set in z=0 m.
% Complex values of the electric permittivity (indicating power losses
% associated to the material) are allowed (the imaginary part has to be
% negative, according to the temporal convention exp(j*omega*t)). Finally,
% both positive (dielectric) and negative (plasmas/double negative materials)
% values are accepted.
%
%% Conductivity
% This field allows to specify the values of the electric conductivity
% associated to the materials defined (imperfect dielectric or good
% conductor). Each entry of the vector refers to a medium, starting from
% the one defined in the semispace z>0 m. In fact, at least two materials
% should be defined, whose interface is set in z=0 m. Only real positive
% values are accepted.
%
%% Magnetic permeability
% This field allows to specify the values of the relative magnetic permeability
% associated to the materials defined. Each entry of the vector refers to
% a medium, starting from the one defined in the semispace z>0 m. In fact, at
% least two materials should be defined, whose interface is set in z=0 m.
% Complex values of the magnetic permeability (indicating power losses
% associated to the material) are allowed (the imaginary part has to be
% negative, according to the temporal convention exp(j*omega*t)). Finally,
% both positive (magnetic media) and negative (ferrites/double negative
% materials) values are accepted.
%
%% Z-coordinate of the interfaces
% This field allows to specify the z position (in meters) of the
% discontinuities between the defined materials. At least one discontinuity
% in z=0 m should be defined. As the plane wave travels from +z to -z, the
% position of the interfaces has to be incrementally negative.
%
%% Incident field
% This field allows to specify the oscillation amplitude of the incident
% field. The value in this field is expressed V/m or in A/m if a TE or a TM
% wave is considered, respectively. Only positive values are accepted.
%
%% Angle of incidence
% This field allows to specify the angle of incidence of the plane wave
% impinging on the first discontinuity. The angle is defined by the normal
% to the wave fronts and the y axis and it increases in the counter
% clockwise direction starting from the y axis. Therefore, 0° means normal
% incidence, 90° a wave traveling from -y to +y and -90° a wave traveling
% from +y to -y. The angle must be expressed in degrees and only values
% comprised between -90° and 90° are accepted.
%
%% Axes range
% This field allows to specify the ranges of the z and y axes (in meters),
% thus causing both axes to have the same dimensions. As the GUI defines at
% least two materials whose discontinuity is set in z=0 m, such value must
% be included in the axes ranges.
%
%% Number of samples of each axis
% This field allows to specify the spatial discretization of the plane by
% entering the number of samples of each axis. Obviously only values
% greater than 0 are accepted.
%
%% TE/TM wave selection
% This pop-up menu allows to choose between a TE or a TM wave. Results
% show the x component of the electric field or of the magnetic field if a
% TE or a TM wave is selected, respectively.
%
%% TE/TM wave selection
% This pop-up menu allows to choose between a TE or a TM wave. Results
% show the x component of the electric field or of the magnetic field if a
% TE or a TM wave is selected, respectively.
%
%% Real/Absolute values
% This pop-up menu if real or absolute values of the field should be
% displayed in the output windows.
%
%% Animate fields
% If this option is selected, the bottom right-hand window shows the
% variation of the fields with time. The effect of such an options can
% be appreciated only if real values of the fields are calculated.
%
%% Calculation details
% If this option is selected, a figure is opened providing details of the
% calculations preformed by the GUI. Specifically, each material is
% represented through its equivalent transmission line model and several
% quantities are shown/calculated:
%
% - the electromagnetic characteristics of the media (relative electric
% permittivity and magnetic permeability, electric conductivity);
%
% - intrinsic impedance associated to the TE/TM wave;
%
% - the wavelength, the phase constant and the absorption coefficient;
%
% - the reflection coefficients at each interface (defined with respect to 
% the intrinsic impendance of both materials determining the
% discontinuity).
%
% A maximum number of 12 materials can be defined as long as this option is
% selected.
%
%% Calculate
% This button starts a new calculation of the wave propagation. When a new
% input parameter is provided to the GUI, the change will apply only after
% the request for a new calculation.
%
%% Stop animation
% This button stops the calculation of the field variation with time.
%
%% Help
% This button opens this quick reference to the GUI.




##### SOURCE END #####
-->
   </body>
</html>