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CCS/AWR1443: Wavelength of the 77-81GHz Millimeter Wave

user5192595
Prodigy 60 points
Part Number: AWR1443

Tool/software: Code Composer Studio

How to Calculate the Wavelength of the 77-81GHz Millimeter Wave ? Since its frequency is not stable， why it says the Wavelength of the 77-81GHz Millimeter Wave is about 4mm?

  • 0
    Intellectual 500 points

    Hey,

    most of the time you use the "mean carrier frequency" (for examples in equations).

    This means, if the frequency of your chirp changes from 77 GHz to 81 GHz, you use 79 GHz.

    Also: The difference of the wavelengths is not so large.

    Wavelength at 77 GHz: lambda = c / 77 GHz = 3,9 mm.
    Wavelength at 79 GHz: lambda = c / 79 GHz = 3,8 mm.
    Wavelength at 81 GHz: lambda = c / 81 GHz = 3,7 mm.

    These values are "ABOUT" 4 mm . :)

    Best Regards,

    Enric