Antenna Array
Estimate the array factor for a uniformly weighted linear antenna array. Use it to see how spacing and phase steering shape the main beam and grating lobes.
Array readout
13.51 deg
first-null 30.49 deg
Not visible
spacing 0.50 lambda
Beam steering and array factor
Element spacing and phase tilt the main lobe.
The sketch shows how element phase tilts the beam; the chart shows real sidelobes as gain peaks versus angle.
20.0 deg main beam, 9.03 dBi
Normalized array factor
0 dB is the main lobe peak
13.51 deg
30.49 deg
not expected
No full-strength grating lobe is expected in the visible region.
Open Source and Easy to Use Elsewhere
This tool is open source and the underlying logic is fully transparent. You can inspect the code, understand the calculations, and contribute improvements. If you want to use the tool in your own website, course page, or learning platform, you can also embed it directly and start from a ready-made iframe setup for this exact tool.
Open source: review the implementation and see how the results are produced.
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