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  1. An Integrated Active Circulator for Radar Transceivers with Shared Tx/Rx Antenna
An Integrated Active Circulator for Radar Transceivers with Shared Tx/Rx Antenna
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An Integrated Active Circulator for Radar Transceivers with Shared Tx/Rx Antenna

Masoumizadeh, M.

  1. DOI:10.1109/NewCAS58973.2024.10666295
  2. Main Entry: Masoumizadeh, M.
  3. Title:An Integrated Active Circulator for Radar Transceivers with Shared Tx/Rx Antenna.
  4. Publisher:2024.
  5. Abstract:This paper presents a new architectural solution to address the critical challenge of self-interference (SI) in radar systems sharing a Tx/Rx antenna. Here, the SI problem, often leading to receiver nonlinearity or saturation, is significantly mitigated using a new active circulator integrated with a quadrature-fed cross-dipole antenna within the introduced radar transceiver architecture. This configuration results in circular-polarized radiation of the transmitting signal, segregating the desired (echo) and undesired (SI) signals into differential and common-mode inputs, and highly attenuating the SI. As a proof of concept, the proposed SI cancellation configuration is designed for operation at 77-81 GHz using a 65-nm CMOS process, and its functionality is verified through simulations. According to the post-layout simulation results, the Rx RF front-end provides a 13 dB conversion gain and 74 dB of isolation between the Tx and Rx ports while drawing 34.7 mA from a 1 V supply, making it a suitable candidate for automotive FMCW radar applications. © 2024 IEEE
  6. Notes:Sharif Repository
  7. Subject:Amplitude shift keying.
  8. Subject:Antenna feeders.
  9. Subject:Automotive radar.
  10. Subject:Circular polarization.
  11. Subject:CMOS integrated circuits.
  12. Subject:Frequency division multiplexing.
  13. Subject:Frequency shift keying.
  14. Subject:Microwave antennas.
  15. Subject:Optical transceivers.
  16. Subject:Phase shift keying.
  17. Subject:Pulse amplitude modulation.
  18. Subject:Pulse width modulation.
  19. Subject:Radar interference.
  20. Subject:Active circulator.
  21. Subject:Architectural solutions.
  22. Subject:Critical challenges.
  23. Subject:FMCW.
  24. Subject:Interference cancellation.
  25. Subject:Radar transceivers.
  26. Subject:Self-interference cancelation.
  27. Subject:Shared antenna.
  28. Subject:Radar antennas.
  29. Added Entry:Akbar, F.
  30. Added Entry:Fotowat Ahmady, A.
  31. Added Entry:Sharif University of Technology.
  32. Source: 2024 22nd IEEE Interregional NEWCAS Conference, NEWCAS 2024 ; 2024 , Pages 223-227 ; 979-835036175-9 (ISBN)
  33. Web Site:https://ieeexplore.ieee.org/document/10666295

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