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HFSS15: Selecting a Near-Field Quantity to Plot
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When plotting near-field quantities, the quantity can be a value that was calculated by HFSS, a value from a calculated expression, or an intrinsic (inherent) variable value such as frequency or theta.
To select a near-field quantity to plot:
1. When you create the report, specify the Report Type as "Near Fields."
2. In the Report dialog box, select one of the following categories:
Variables | Intrinsic variables, such as frequency or theta, or user-defined project variables, such as the length of a quarter-wave transformer. |
Output Variables | User defined expressions applied to derive quantities from the original field solution. |
Near E | The radiated electric field in the near region. |
Max Near Field Params | The maximum radiated electric field in the near region. |
Near Normalized Antenna | The resultant plot is: field quantity / (maximum field quantity value over the entire infinite sphere). |
3. If you selected the Near E category, specify the polarization of the electric field by selecting one of the following types of quantities from the Quantity list:
NearETotal | The combined magnitude of the electric field components. |
NearEPhi | The phi component of the electric field. |
NearETheta | The theta component of the electric field. |
NearEX | The x-component of the electric field. |
NearEY | The y-component of the electric field. |
NearEZ | The z-component of the electric field. |
NearELHCP | The dominant component for a left-hand, circularly polarized electric field. |
NearERHCP | The dominant component for a right-hand, circularly polarized electric field. |
NearECircularLHCP | The polarization ratio for a predominantly left-hand, circularly polarized antenna. |
NearECircularRHCP | The polarization ratio for a predominantly right-hand, circularly polarized antenna. |
NearEL3X | The dominant component for an x-polarized aperture using Ludwig’s third definition of cross polarization. |
NearEL3Y | The dominant component for a y-polarized aperture using Ludwig’s third definition of cross polarization. |
If a Near-field plot takes a long time to plot, be sure to perform File>Save when the plot is displayed. This saves the calculated data and permits fast display on subsequent viewings of the plot.
