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Transmitter noise considerations in super-Nyquist FMCW radar design

Transmitter noise considerations in super-Nyquist FMCW radar design

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A design consideration for super-Nyquist frequency modulated continuous-wave (FMCW) radar systems relating to transmitter to receiver noise leakage is introduced. Phase noise curves comparing the fundamental direct digital synthesisers frequency and its second super-Nyquist image show a significant increase in relative noise level at all offsets from the carrier. This results in a reduced transmitter signal-to-noise ratio. It is shown with a simple example that this can lead to a significant degradation in receiver sensitivity if not managed properly. A design rule-of-thumb that can be used by radar designers to avoid or mitigate this problem is provided.

References

    1. 1)
    2. 2)
      • 2. Stelzer, A., Kolmhofer, E., Scheiblhofer, S.: ‘Fast 77 GHz chirps with direct digital synthesis and phase locked loop’. Proc. of Asiapacific Microwave Conf., Suzhou, China, December 2005.
    3. 3)
      • 3. Gray, D.A., Viola, M., Moran, W., Samarasekera, S., May, P., Bates, B., Venkataraman, K., McCarroll, C., Ferguson, B., McLaughlin, D.: ‘WREN: A weather radar experimental network’. Int. Conf. on Electromagnetics in Advanced Applications, 2010.
    4. 4)
      • 4. Huang, Y.: ‘A study of RF-over-fibre based active RFID indoor location system’. Ph.D. thesis, University College London, UK, 2011.
    5. 5)
    6. 6)
      • 6. Li, Z., Wu, K.: ‘On the leakage of FMCW radar front-end receiver’. Global Symp. on Millimeter Waves, 2008, 2008.
    7. 7)
      • 7. Gentile, K.: ‘Super-Nyquist operation of the AD9912 yields a high RF output signal’. Analog Devices Application Note, AN-939, 2007.
    8. 8)
    9. 9)
      • 9. Analog Devices: ‘2.5GSPS direct digital synthesizer with 12-Bit DAC’. AD9915 Datasheet, 2014, Rev. D.
    10. 10)
      • 10. Mini-Circuits: ‘TC1-1-13M + RF transformer S-parameters’, 2014, Available at Mini-Circuits, http://www.minicircuits.com/, Accessed on: November 2014.
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