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Unequal feed length in Tesla's HD radar

Hi all,

We are required to design equal length for each RX or TX path.

But I find the feed lengths in Tesla's new HD radar module are just not the same. See link below

https://www.autoevolution.com/news/the-new-high-definition-radar-in-tesla-s-hw4-is-not-as-revolutionary-as-it-promised-to-be-210526.html

How can they achieve this?

Is there a compensating function for different feed length?

Is there any limitation for length difference?