Other Parts Discussed in Thread: IWR6843
Hello,
We used the mmWave Radar Radome Design Guide to make the following dome radius calculations, can you help us validate the same?
Wave Frequency (f): 76.5 Ghz (We are using the 76-77 GHz band)
Speed of Light (C): 299792458 m/sec
Wavelength (λ): 3.99 mm
n= 1,2,3…
Calculated Values: optimum_thickness = 0.00270 m ≍ 2.7 mm for n =2
Radius of Dome = 21.945mm, 27.93mm, 33.915mm for n = 11,14,17 (Values Selected by us)
To verify, we repeated the same process with the values provided by TI in the design guide;
Wave Frequency (f): 62 Ghz (IWR6843 uses the 60-64 GHz band)
Speed of Light (C): 299792458 m/sec
Wavelength (λ): 4.83536 mm
Radome values used:
18.24 mm - n = 7.54,
31.2 mm - n = 12.90,
37.44 mm - n = 15.46
Since the values of n come out to be non-integral, I had the following questions;
Q1.) Have you considered the speed of light in air or vacuum?
Q2.) Were any additional considerations made for the calculations or it is a rounding-off error? (Like losses)
