FMCW fill level sensor, comprising: an FMCW module for converting a measurement signal of the fill level sensor into an intermediate frequency signal; an intermediate frequency channel for generating an echo curve from the intermediate frequency signal, the intermediate frequency channel comprising: an analog-to-digital converter for digitizing the intermediate frequency signal; an equalizer (105, 106, 301, 401, 402, 702, 703) for equalizing the intermediate frequency signal digitized by the analog-to-digital converter; wherein the equalizer is configured (a) to convolve the digitized intermediate frequency signal with an equalization function in the form of a time function g(nT), or (b) to multiply the digitized intermediate frequency signal with an equalization function in the form of a transfer function G( k) at discrete frequencies, or (c) is implemented as a filter with finite or infinite impulse response (FIR/IIR filter) for filtering the digitized intermediate frequency signal, or (d) for multiplying the digitized intermediate frequency signal by an equalization function in the form of the magnitude of the transfer function G( k) at discrete frequencies; and wherein the intermediate frequency channel further comprises a window module (107, 108) arranged downstream the equalizer (105, 106, 301, 401, 402, 702, 703) and adapted to window the intermediate frequency signal obtained by convolution, multiplication or filtering with the FIR/IIR filter. an FMCW module for converting a measurement signal of the fill level sensor into an intermediate frequency signal; an intermediate frequency channel for generating an echo curve from the intermediate frequency signal, the intermediate frequency channel comprising: an analog-to-digital converter for digitizing the intermediate frequency signal; an equalizer (105, 106, 301, 401, 402, 702, 703) for equalizing the intermediate frequency signal digitized by the analog-to-digital converter; wherein the equalizer is configured (a) to convolve the digitized intermediate frequency signal with an equalization function in the form of a time function g(nT), or (b) to multiply the digitized intermediate frequency signal with an equalization function in the form of a transfer function G( k) at discrete frequencies, or (c) is implemented as a filter with finite or infinite impulse response (FIR/IIR filter) for filtering the digitized intermediate frequency signal, or (d) for multiplying the digitized intermediate frequency signal by an equalization function in the form of the magnitude of the transfer function G( k) at discrete frequencies; and an analog-to-digital converter for digitizing the intermediate frequency signal; an equalizer (105, 106, 301, 401, 402, 702, 703) for equalizing the intermediate frequency signal digitized by the analog-to-digital converter; wherein the equalizer is configured (a) to convolve the digitized intermediate frequency signal with an equalization function in the form of a time function g(nT), or (b) to multiply the digitized intermediate frequency signal with an equalization function in the form of a transfer function G( k) at discrete frequencies, or (c) is implemented as a filter with finite or infinite impulse response (FIR/IIR filter) for filtering the digitized intermediate frequency signal, or (d) for multiplying the digitized intermediate frequency signal by an equalization function in the form of the magnitude of the transfer function G( k) at discrete frequencies; and wherein the intermediate frequency channel further comprises a window module (107, 108) arranged downstream the equalizer (105, 106, 301, 401, 402, 702, 703) and adapted to window the intermediate frequency signal obtained by convolution, multiplication or filtering with the FIR/IIR filter.