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Ansys Learning Forum › Forums › Discuss Simulation › Electronics › What is the meaning of the negative theta degree? › Reply To: What is the meaning of the negative theta degree?

April 22, 2024 at 11:04 am
Jason.k
Ansys Employee

Hello DRG,

Thank you for reaching out to Ansys Learning Forum. 

Theta is the angle from Z axis. Negative theta values provide information (related to Elevation) for angles from 180 to 360 or in other words for the other "half" Elevation plane. 

Extracting data from 0 to180 degrees (for theta) does not provide any information for the whole Elevation Antenna behavior, but only for half of the Elevation plane.

In order to extract information for the whole Elevation plane, you need to scan theta from 0 to 360 (or from -180 to 180 degrees). For both options, you will get same results (as the Theta scan plane is equal to 360 degrees) which means that the extracted information is related to the whole Elevation plane. 

Best regards, 
Jason.Â