[PhasedArrayToolbox] IsotropicAntenna directivity issue
1 次查看(过去 30 天)
显示 更早的评论
Hello. I don't understand behaviour of directivity function for IsotropicAntenna from Phased Array Toolbox (Matlab R2014b). I supposed, that for Isotropic Antenna its directivity D(phi, theta) = const = 1 = 0 dBi. But in Documentation Center's example D = const = 0.1102e-3. That's the code:
myAnt = phased.IsotropicAntennaElement();
ang = [-30,-20,-10,0,10,20,30; 0,0,0,0,0,0,0];
freq = 1e9;
d = directivity(myAnt,freq,ang)
Output
d =
1.0e-03 *
0.1102
0.1102
0.1102
0.1102
0.1102
0.1102
0.1102
Could anybody explain this? Thank you.
0 个评论
采纳的回答
Honglei Chen
2015-3-18
Hi Vitaly,
You are right that the theoretical vale is 0 dBi. The directivity computation in this case is done using numerical integration with one degree spacing in both azimuth and elevation directions so the result is not exact.
更多回答(0 个)
另请参阅
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!