Hi Champs,
Could you please tell us mmwave "beamwidth" ?
We would like to know how much dB expose to object.
Could you pleas tell us this "range" of DB?
Regards,
Kz777
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Hello,
The beamwidth is normally defined as the antenna directivity from boresight, with a drop in 3db of amplitude.
See radartutorial.eu.
Related to the IWR1443 EVM, the Radar antenna directivity gain, depends on how the Tx and Rx antenna are used.
In the Tx we can use 1 Tx, Tx MIMO (usually 1, and 3), or with a different antenna beamforming for electronic steering or higher EIRP power. The Rx are usually combined to create better azimuth resolution. There is a representative patch antenna pattern shown in the 1443BOOST EVM User Guide, swru518.
Antenna |
E (Elevation) Beamwidth |
E (Elevation) Directivity |
H (Azimuth) Beamwidth |
H (Azimuth) Directivity |
Tx1{az MIMO} |
31.6 degrees |
9.5dbi |
68 degrees |
9.3dbi |
Tx2{el MIMO} |
29.2 |
9.9 |
62.2 |
9.8 |
Tx3{az MIMO} |
26.6 |
10.1 |
58.6 |
10.2 |
Rx1 |
28.8 |
10.3 |
65.2 |
10.7 |
Rx2 |
29.5 |
9.9 |
84.5 |
10.1 |
Rx3 |
29.2 |
9.7 |
90.4 |
9.7 |
Rx4 |
31.3 |
9.8 |
69.9 |
10.8 |
Regards,
Joe Quintal