SPRACP3D November   2019  – August 2026 AWR6843 , AWR6843AOP , IWR1443 , IWR1642 , IWR6443 , IWR6843 , IWR6843AOP

 

  1.   1
  2.   Trademarks
  3. 1Introduction
  4. 2Typical Certification Procedure
  5. 3Regulatory Compliance Overview
    1. 3.1 European Union Regulations: Radio Equipment Directive (RED)
      1. 3.1.1 Short Range Radar (EN 305 550)
      2. 3.1.2 Short Range Level Probing Radar (EN 302 729)
        1. 3.1.2.1 Permitted Frequency Ranges and Operating Bandwidth
        2. 3.1.2.2 Antenna Requirements
      3. 3.1.3 RF Exposure Limit - EN 62311
      4. 3.1.4 Electrical Safety - EN 62368
      5. 3.1.5 Electromagnetic Compatibility (EMC) - EN 301 489
    2. 3.2 Federal Communications Commission (FCC)
      1. 3.2.1 End Equipment and FCC Clause
      2. 3.2.2 60GHz Radar Operation (47 CFR § 15.255)
        1. 3.2.2.1 Fundamental Emission Levels, BWs, and Max Duty Cycle
        2. 3.2.2.2 Spurious Emissions
        3. 3.2.2.3 Frequency Stability
        4. 3.2.2.4 FCC Waiver and Other Relevant Information
      3. 3.2.3 Level Probing Radar (47 CFR § 15.256)
        1. 3.2.3.1 Usage Limitations
        2. 3.2.3.2 Fundamental Emissions, BWs
        3. 3.2.3.3 Antenna Restrictions
        4. 3.2.3.4 Unwanted Emissions
      4. 3.2.4 Modular Approval (47 CFR § 15.212)
      5. 3.2.5 Radiation Exposure Requirement
    3. 3.3 Japan Radio Law
      1. 3.3.1 BW, Designated Frequency, and Tolerances
      2. 3.3.2 Out of Band and Spurious Emissions
      3. 3.3.3 Controller Functions
    4. 3.4 Wireless Planning and Coordination Wing (WPC)
      1. 3.4.1 Permitted Frequency of Operations and Approval
      2. 3.4.2 Equipment Type Authorization
    5. 3.5 Federal Telecommunications Institute (IFT)
      1. 3.5.1 Fundamental Emission Levels and BWs
    6. 3.6 National Telecommunications Agency (ANATEL)
      1. 3.6.1 Fundamental Emissions Levels, BWs, and Max Duty Cycle
      2. 3.6.2 Licenses
    7. 3.7 Ministry of Transport and Communications (MTC)
    8. 3.8 National Communications Entity (ENACOM)
  6. 4Applicable Terms and Equations
    1. 4.1 Duty Cycle Factor
    2. 4.2 Effective Isotropic Radiated Power (EIRP)
    3. 4.3 Friis Equation
    4. 4.4 Far-Field Boundary
  7. 5Tools and Setup
    1. 5.1 Hardware Setup
    2. 5.2 Internal Laboratory Test Setup
      1. 5.2.1 Near-Field Circuit Probing
      2. 5.2.2 Occupied Bandwidth Testing
      3. 5.2.3 Radiation Pattern Measurement
    3. 5.3 MMWAVESTUDIO
      1. 5.3.1 Running LUA Scripts
    4. 5.4 mmWave Visualizer
    5. 5.5 IWR6843ISK-ODS Test Case
  8. 6Common Issues and Resolutions
    1. 6.1 Peak Power
    2. 6.2 Occupied Bandwidth
    3. 6.3 Spurious Emissions
      1. 6.3.1 14.4GHz Harmonics
      2. 6.3.2 Suggested Resolution
        1. 6.3.2.1 Hardware Measures
        2. 6.3.2.2 Software Measures
          1. 6.3.2.2.1 APLL Duty Cycling
          2. 6.3.2.2.2 APLL VCO RTRIM Setting in BSS Firmware
    4. 6.4 Overshoot
    5. 6.5 Frequency Stability
      1. 6.5.1 Generating CW Signal
      2. 6.5.2 Frequency Stability Over Temperature and Voltage Range
    6. 6.6 EIRP Spiking and Spectrum Analyzer BW
  9. 7References
  10. 8Revision History

3.1.2.1 Permitted Frequency Ranges and Operating Bandwidth

ETSI permits four distinct frequency ranges. Of these, the higher two allow the greatest level of target resolution, this is because they have the highest frequencies and the highest bandwidths. For this reason, many customers have begun migrating to these two bands. One thing to notice though, is that while the ETSI has created specific LPR regulations around the 57-64GHz band, the FCC has not, thus for applications seeking market access in both FCC and ETSI regulated markets, the 75-85GHz band may be the most advantageous. The ETSI-permitted LPR frequency bands and their associated bandwidths are detailed in Table 3-3.

To determine the operating range of an LPR, ETSI defines F_L and F_H higher and lower frequencies at which the power has dropped 20dB from the maximum. F_L and F_H must reside completely within the permitted bandwidths of operation.

Table 3-3 Frequencies of Operation
Band Start Frequency (GHz)Band Stop Frequency (GHz)Available Bandwidth (GHz)
68.52.5
24.0526.52.45
57647
758510
  • Mean Power Spectral Density: The MPSD sets a limit for how much power can be radiated across the band used. The limits are set for both the main lobe and the half sphere.
Table 3-4 Maximum Mean Power Spectral Density
Operating Frequency Band (GHz)Maximum Mean EIRP Spectral Density (dBm/MHz) Within Main BeamMaximum Mean EIRP Spectral Density on the Half-Sphere
6-8.5-33-55
24.05-26.5-14-41.3
57-64-2-41.3
75-85-3-41.3
  • Maximum Peak Power: The ETSI also sets limits on the peak EIRP with a 50MHz band of the bandwidth of operation.
Table 3-5 Maximum Peak Power
Operating Frequency Bandwidth (GHz)Maximum EIRP (dBm)Equivalent Max EIRP Field Strength Levels at 3m (dBμV/M)
6-8.57102.26
24.05-26.526121.26
57-6435130.26
75-8564129.26
  • There are other limits for radiated power in the 6-8.5GHz and 24.05-26.5GHz bands. These are not be discussed in this document. You can find them in EN 302 729 section 4.3.83.
  • For radars in the 57-64GHz and 75-85GHz bands, the following limits apply outside of the permitted bands of operation within the main beam: the maximum mean power spectral density must be 20dB lower than the permitted in-band maximum mean power spectral density.