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IWR6843AOPEVM: wavelength effects

Ronald Fecso
Prodigy 90 points
Part Number: IWR6843AOPEVM

what wavelength does the sensor use and what is the influence of the wavelength concerning range and penetration of objects?

  • +1
    TI__Expert 8802 points

    Hi,

    is a single-chip 57-GHz to 64-GHz intelligent mmWave sensor with integrated antenna on package (AoP).

    The penetration depth of electromagnetic waves in a material depends on the wavelength and the absorption coefficient of the material. Metallic objects and liquids are generally more reflective while something like cardboard is near "invisible" to mmWave.

    The range of a mmWave sensor is determined by the signal-to-noise ratio (SNR) and the radar cross section (RCS) of the target object. The SNR depends on factors such as transmit power, antenna gain, noise figure, bandwidth, and integration time. The RCS depends on the size, shape, material, and orientation of the target object. Generally, larger and more reflective objects have higher RCS and can be detected at longer ranges than smaller and less reflective objects.

    Please look at our Radar toolbox for more information: https://dev.ti.com/tirex/explore/node?node=A__AGvTEJkh-csqqwXnVhDbTQ__radar_toolbox__1AslXXD__LATEST