Work on wire dipole example.

docs/source/examples_antennas.rst

@@ -1,6 +1,6 @@
-********
-Antennas
-********
+**************
+Antenna models
+**************
 
 This section provides some example models of antennas. Each example comes with an input file which you can download and run.
 
@@ -9,7 +9,7 @@ Wire dipole antenna model
 
 :download:`antenna_wire_dipole_fs.in <../../user_models/antenna_wire_dipole_fs.in>`
 
-This example demonstrates a model of a half-wavelength wire dipole antenna in free space. The length of the dipole is 136mm with a diameter of 6mm, and a 1mm gap between the arms.
+This example demonstrates a model of a half-wavelength wire dipole antenna in free space. The length of the dipole is 150mm with a diameter of 6mm, and a 1mm gap between the arms.
 
 .. literalinclude:: ../../user_models/antenna_wire_dipole_fs.in
     :language: none
@@ -20,7 +20,7 @@ This example demonstrates a model of a half-wavelength wire dipole antenna in fr
 
     FDTD geometry mesh showing a wire dipole antenna model.
 
-The antenna is fed using the ``#tranmission_line`` command. The one-dimensional transmission line model virtually attaches to the dipole at the gap between the arms. The antenna has an input impedance :math:`Z_0` of 73 ohms specified in the ``#tranmission_line`` command. The transmission line uses a Gaussian waveform with a centre frequency of 1.5~GHz.
+The antenna is fed using the ``#tranmission_line`` command. The one-dimensional transmission line model virtually attaches to the dipole at the gap between the arms. The antenna has an input impedance :math:`Z_0` of 73 Ohms specified in the ``#tranmission_line`` command. The transmission line uses a Gaussian waveform with a centre frequency of 1GHz.
 
 
 Bowtie antenna model