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+CRLH Parameter Extraction
+=========================
+
+* Setup a composite-right/left-handed (CRLH) unit cell and extract the equivalent circuit parameter.
+
+Introduction
+-------------
+**This tutorial covers:**
+
+* Setup a feeding mircostrip line & port
+* Apply an inhomogeneous mesh used for improved accuracy and simulation speed
+* Use an internal clss to setup a CRLH unit cell
+* Use the port voltages and currents to extract the unit cell equivalent circuit parameter
+
+.. figure:: images/CRLH_cell.png
+ :width: 80%
+ :alt: CRLH unit cell with feeding MSL.
+
+ CRLH unit cell with feeding MSL.
+
+Python Script
+-------------
+Get the latest version `from git <http://www.openems.de/gitweb/?p=openEMS.git;a=blob_plain;f=matlab/Tutorials/Bent_Patch_Antenna.m;hb=refs/heads/master>`_.
+
+.. include:: ./__CRLH_Extraction.txt
+
+Images
+-------------
+
+.. figure:: images/CRLH_Spara.png
+ :width: 80%
+ :alt: CRLH cell S-parameter
+
+ CRLH cell S-parameter
+
+.. figure:: images/CRLH_dispersion.png
+ :width: 80%
+ :alt: CRLH unit cell dispersion diagram
+
+ CRLH unit cell dispersion diagram