MMWCAS-RF-EVM: Azimuth angle resolution when using beam forming

Mario

Part Number: MMWCAS-RF-EVM
Other Parts Discussed in Thread: TIDEP-01012

Dear costumer service team,

in the document "Design Guide: TIDEP-01012 - Imaging Radar Using Cascaded mmWave Sensor Reference Design" you mention on page 4, that the azimuth angle resolution is 1.4 degrees when using beam steering. How is this value being obtained? I could only think of getting this value when using multiple beams, whereas each beam must not use all 12 Tx antennas at the same time. Is that correct? Is there an application note addressing the implementation or the algorithm in detail?

Kind regards

Mario

5 months ago

0 Kaushik Gowda 4 months ago

TI__Mastermind 18615 points

Hi Mario,

Currently there is no application note addressing the algo implementation. Let me check internally regarding how the angle resolution was calculated and get back to you in 2 days' time.

Regards,

Kaushik

+1 Kaushik Gowda 4 months ago in reply to Kaushik Gowda

TI__Mastermind 18615 points

Hi Mario,

Thank you for your patience.

There are 86 virtual channels in the azimuth direction in the 4-chip imaging radar reference design. The angle resolution is calculated with a standard equation as below:

Here D would be the aperture size and lambda is the wavelength of the RF signal.

Regards,

Kaushik

0 Mario 4 months ago in reply to Kaushik Gowda

Prodigy 85 points

Hi Kaushik,

thanks a lot for your answer.

Kind regards

Mario

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MMWCAS-RF-EVM: Azimuth angle resolution when using beam forming