- 1
- 2
- 3
- 4
- HFSS15在線幫助
- 首頁
- HFSS教學(xué)
- HFSS 15 在線幫助文檔
Technical Notes > Radiated Fields > Antenna Parameters
Peak Directivity
Directivity is defined as the ratio of an antenna’s radiation intensity in a given direction to the radiation intensity averaged over all directions. Peak directivity, in turn, is the maximum directivity over all the user-specified directions of the far-field infinite sphere.
Directivity is a dimensionless quantity represented
by
where
|
|
(1) |
• U
is the radiation
intensity in watts per steradian in the direction specified.
• Prad
is the radiated
power in watts.
Note |
The peak directivity displayed in the Antenna Parameters window is the directivity in the direction of maximum radiation intensity, Umax. |
• For a lossless antenna, the directivity will be equal to the gain. However, if the antenna has inherent losses, the directivity is related to the gain by the radiation efficiency of the antenna.
Related Topics
Setting up a Far-Field Infinite Sphere
Computing Antenna Parameters
-
國內(nèi)最全面的HFSS培訓(xùn)課程，包含7套視頻教程和2本教材，資深專家講解，視頻操作演示，結(jié)合最新工程案例，讓HFSS學(xué)習(xí)不再難...【詳細介紹】
