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Impact of Ultra Wide-Band Antennas on Communications in a Spatial Channel

This study explores the effects of ultra-wide-band antennas on communication systems in a spatial channel. It investigates the mathematical framework of UWB system models, analyzes the impact of antennas on the spatial channel, and presents simulation results. The paper also discusses future work in UWB systems, including diversity enhancement and coupling effects among antennas.

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Impact of Ultra Wide-Band Antennas on Communications in a Spatial Channel

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  1. Impact of Ultra Wide-Band Antennas onCommunications in a Spatial Channel Mohamed El-Hadidy & Thomas Kaiser University of Duisburg-Essen Faculty of Engineering, Department of Communication Systems, Bismarckstr. 81, 47057 Duisburg, Germany Email: el-hadidy@nts.uni-due.de

  2. Mathematical frame of UWB system model How the whole chain of the UWB transmisson modeled, including the antennas‘ effects? Omni-directional or Directionl antennas? Impact of antennas on the spatial channel and some simulation results. Future work Outline

  3. UWB System Model

  4. UWB System Model

  5. UWB System Model

  6. UWB System Model

  7. Complete UWB Chain Ant_Tx Ant_Rx Channel Tx Rx IEEE Ray Tracing Directional Omni-Directional

  8. Complete UWB Chain Ant_Tx Ant_Rx Channel Tx Rx * *

  9. FirstChannel Impulse Response of the Environment

  10. IEEE Channel Model

  11. Ray-tracing Channel Model x10-7

  12. Discrete Channel Impulse Response

  13. SecondAntenna Impulse Response &

  14. HFSS Radiation Pattern of Horn Antenna Freq = 6.5 GHz

  15. HFSS  Gain in dB from Radiation Pattern Freq = 3 GHz

  16. HFSS  Gain in dB from Radiation Pattern Freq = 3.5 GHz

  17. HFSS  Gain in dB from Radiation Pattern Freq = 4 GHz

  18. HFSS  Gain in dB from Radiation Pattern Freq = 4.5 GHz

  19. HFSS  Gain in dB from Radiation Pattern Freq = 5 GHz

  20. HFSS  Gain in dB from Radiation Pattern Freq = 5.5 GHz

  21. HFSS  Gain in dB from Radiation Pattern Freq = 6 GHz

  22. HFSS  Gain in dB from Radiation Pattern Freq = 6.5 GHz

  23. HFSS  Gain in dB from Radiation Pattern Freq = 7 GHz

  24. HFSS  Gain in dB from Radiation Pattern Freq = 7.5 GHz

  25. HFSS  Gain in dB from Radiation Pattern Freq = 8 GHz

  26. HFSS  Gain in dB from Radiation Pattern Freq = 8.5 GHz

  27. HFSS  Gain in dB from Radiation Pattern Freq = 9 GHz

  28. HFSS  Gain in dB from Radiation Pattern Freq = 9.5 GHz

  29. HFSS  Gain in dB from Radiation Pattern Freq = 10 GHz

  30. Bowtie Antenna Antenna radiation pattern

  31. Step Response of Bowtie Antenna

  32. Ideal Omni-Directional Directional Rotating Tx & Rx by 90° Rotating Tx by 90° Overall Channel Impulse Response

  33. Rotation of Tx Antennas in SISO System

  34. Omni-Directional vs. Directional Antennas in SISO & MISO

  35. Future Work • Investigating the diversity added to the UWB MIMO system using the antennas’ impact (e.g. using different types of antennas, rotating the antennas, etc.) • Investigating the coupling effect appearing among the neighbouring antennas either at transmit or receive sides for UWB MIMO system. • Embedding the whole antenna properties which is angular and frequency dependent into the system like polarization and input impedance, etc.

  36. Thank you

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