SWRA705 August   2021 AWR1243 , AWR1443 , AWR1642 , AWR1843 , AWR1843AOP , AWR2243 , AWR2944 , AWR6443 , AWR6843 , AWR6843AOP , AWRL1432 , AWRL6432 , IWR1443 , IWR1642 , IWR1843 , IWR2243 , IWR6243 , IWR6443 , IWR6843 , IWR6843AOP , IWRL6432 , IWRL6432AOP

 

  1.   Trademarks
  2. 1 Introduction and Challenges
  3. 2 Radome Design Elements
    1. 2.1 Understanding Dielectric Constant and Loss tangent on Radome and Antenna Design
    2. 2.2 Impedance Mismatch at Radome Boundaries
    3. 2.3 Radome Wall Thickness
    4. 2.4 Antenna to Radome Distance
  4. 3 Typical Radome Material Examples
  5. 4 Radome Angle Dependent Error
    1. 4.1 Rectangular Radome Angle Dependent Error
    2. 4.2 Spherical Radome Angle Dependent Error
    3. 4.3 Effect of the Angle Error in the Application
  6. 5 Radome Design and Simulations
  7. 6 Radome Lab Experiments
    1. 6.1 Radome Experiment – 1: Flat Plastic Radome
    2. 6.2 PTFE Material Rectangular Radome
    3. 6.3 PTFE-Based Curved Radome
  8. 7 Additional Considerations
    1. 7.1 Antenna Calibration
    2. 7.2 Radome Near Proximity Considerations
  9. 8 Summary
  10. 9 Acknowledgments
  11. 10References

6.1 Radome Experiment – 1: Flat Plastic Radome

A radome with 2 mm thickness is chosen with ABS plastic material construction. Figure 6-1 shows the picture of this radome. Experiments are conducted centered around 62 GHz frequency on an IWR6843ISK EVM board.

GUID-20210422-CA0I-2JMK-LDQD-KZ8NXQFMWG6B-low.jpg Figure 6-1 ABS Plastic Rectangular Radome With 2 mm Wall Thickness

Figure 6-2 shows two graphs with the ABS plastic rectangular radome. Figure 6-3 shows antenna radiation pattern without the radome and, correspondingly, Figure 6-2 shows antenna radiation patterns with the radome. It can be seen from the plots that this radome significantly degraded the antenna radiation pattern.

GUID-20210422-CA0I-VC0J-5M6Q-MQMCWVFFSRPH-low.pngFigure 6-2 Azimuth Antenna Radiation Pattern for the 2 mm Wall Thickness ABS Plastic Rectangular Radome
GUID-20210422-CA0I-KTMF-P0ZB-FSQXJL3Q31GB-low.pngFigure 6-3 Azimuth Antenna Radiation Patterns With no Radome