SNOAA88 June   2022 LDC3114 , LDC3114-Q1

 

  1.   Abstract
  2.   Trademarks
  3. 1Introduction
    1. 1.1 Inductive Sensing
    2. 1.2 EMI
  4. 2CISPR 25 Requirements
    1. 2.1 Radiated EMI Testing
      1. 2.1.1 Test Setup
      2. 2.1.2 Test Results
    2. 2.2 Conducted EMI Testing
      1. 2.2.1 Test Setup
      2. 2.2.2 Test Results
  5. 3Summary
  6. 4References

Test Results

The active monopole antenna was the first test performed. Figure 2-2 and Figure 2-3 show the test results along with the room baseline.

GUID-20220412-SS0I-NBDB-0S9N-S0BVRVKRNQN4-low.pngFigure 2-2 Active Monopole Antenna Baseline
GUID-20220412-SS0I-CVSW-GLXJ-GSNJQ7MPMWM4-low.pngFigure 2-3 Active Monopole Antenna Results

The limits of the testing are shown on all graphs to create an easy visual for the device performance. The next test performed used the bi-conical antenna to measure the board.

GUID-20220412-SS0I-3W49-JVMR-RRC153WVW3BW-low.pngFigure 2-4 Bi-Conical Antenna Baseline
GUID-20220412-SS0I-ZXGW-XWKQ-44SQZHPM0MPZ-low.pngFigure 2-5 Bi-Conical Antenna Results

Next, the log-periodic antenna was used to perform the same test, see the results in Figure 2-6 and Figure 2-7.

GUID-20220412-SS0I-B52L-GTJG-V94GJNLTCKJC-low.pngFigure 2-6 Log-Periodic Antenna Baseline
GUID-20220412-SS0I-TVCL-CHZR-4MK9QTC1KZ58-low.pngFigure 2-7 Log-Periodic Antenna Results

Lastly, the horn antenna is used to perform the test. Figure 2-8 shows the horn antenna baseline and Figure 2-9 shows the horn antenna results.

GUID-20220412-SS0I-LHM4-ZHFF-Q8ZRNHNQRW73-low.pngFigure 2-8 Horn Antenna Baseline
GUID-20220412-SS0I-13LF-8D8G-JKCRFS3JKH4R-low.pngFigure 2-9 Horn Antenna Results

All of the radiated tests passed the CISPR25 requirements without concern or need for modification.