# QUESTION:Do you have an example demonstrating the procedure for modeling a single pole antenna located above an infinite conductor plane, but not touching the plane? I want to add a voltage excitation. I am interested in - Close Field- Far Field- Antenna Impedance- Total Current along the antennaMy questions are:- Do I need to mesh the antenna as a volume or a line?- If I have to volume mesh the antenna, do I need to use a 'skin' thickness, as I am interested in the current around the antenna, and not the internal current?- How can I apply the voltage ( where do I apply the 2 values to create the difference of voltage)?- How far do I need to mesh around the antenna?- How can I use symmetries in the model?- Which elements should I use on the boundaries?ANSWER:See the attached example (ANSYS input file) plots and animation. In words, answers to questions are:- I would model the antenna as a cylindrical void. The surface should be PEC.- Apply voltage with a COAX port- Extent of mesh neednot be much more than 0.5 times antenna length. Experiment with parameters using the input file to make sure.- Model 90 degree sector with PMC (naturally occurring) at 0 and 90 degrees.- For PML ('perfectly matched layers') surround the computational domain with elements having keyopt(4) set to 1.

 QUESTION:Do you have an example demonstrating the procedure for modeling a single pole antenna located above an infinite conductor plane, but not touching the plane? I want to add a voltage excitation. I am interested in- Close Field- Far Field- Antenna Impedance- Total Current along the antennaMy questions are:- Do I need to mesh the antenna as a volume or a line?- If I have to volume mesh the antenna, do I need to use a `skin` thickness, as I am interested in the current around the antenna, and not the internal current?- How can I apply the voltage ( where do I apply the 2 values to create the difference of voltage)?- How far do I need to mesh around the antenna?- How can I use symmetries in the model?- Which elements should I use on the boundaries?ANSWER:See the attached example (ANSYS input file) plots and animation.In words, answers to questions are:- I would model the antenna as a cylindrical void. The surface should be PEC.- Apply voltage with a COAX port- Extent of mesh neednot be much more than 0.5 times antenna length. Experiment with parameters using the input file to make sure.- Model 90 degree sector with PMC (naturally occurring) at 0 and 90 degrees.- For PML (`perfectly matched layers`) surround the computational domain with elements having keyopt(4) set to 1.