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WF121 Datasheet(PDF) 33 Page - List of Unclassifed Manufacturers |
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WF121 Datasheet(HTML) 33 Page - List of Unclassifed Manufacturers |
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33 / 41 page  Bluegiga Technologies Oy Page 33 of 41 the ends of the signal trace is long. Remember, ground is also a signal trace. The ground will conduct the same current as the signal path and at the same frequency, power and sensitivity. Split a ground plane ONLY if you know exactly what you are doing. Splitting the plane may cause more harm than good if applied incorrectly. The ground plane acts as a part of the antenna system. Insufficient ground planes or large separate sensitive signal ground planes will easily cause the coupled transmitted pulses to be AM-demodulated by semiconductor junctions around the board, degrading system performance. Overlapping GND layers without GND stitching vias Overlapping GND layers with GND stitching vias shielding the RF energy Figure 9: Use of stitching vias to avoid emissions from the edges of the PCB |
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