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Heterodyne architecture has been frequently chosen to resolve the problem of dc offset in frequency modulated continuous wave (FMCW) radar. However, heterodyne FMCW radars use different local oscillators, resulting in uncorrelated phase noise (UPN) in beat signals. Therefore, the inherent leakage signal in the heterodyne FMCW radar also has UPN and raises the noise floor in the power spectrum. In...
This paper proposes a new down-conversion method to attenuate leakage signal in frequency modulated continuous wave (FMCW) radar. The proposed method reduces the effect of phase noise in the leakage signal. It can be simply realized through digital signal processing without additional hardware. Specifications of practical FMCW radar and the phase noise which is bad enough were assumed and simulations...
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