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RN52 Fiches technique(PDF) 13 Page - Microchip Technology |
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RN52 Fiches technique(HTML) 13 Page - Microchip Technology |
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13 / 26 page ![]() 2015 Microchip Technology Inc. DS70005120A-page 13 RN52 2.0 APPLICATIONS The following sections provide information on design- ing with the RN52 module, including restoring factory defaults, using the LED interface, minimizing radio interference, solder reflow profile, typical application, etc. 2.1 Minimizing Radio Interference When laying out the host PCB for the RN52 module, the areas under the antenna and shielding connections should not have surface traces, ground planes or exposed via (see Figure 2-1). For optimal radio perfor- mance, the RN52 module’s antenna end should protrude at least 31 mm beyond any metal enclosure. Figure 2-2 shows examples of good, bad, and acceptable positioning of the RN52 on the host PCB. FIGURE 2-1: MINIMIZING RADIO INTERFERENCE FIGURE 2-2: PCB EXAMPLE LAYOUT 21.4 mm 4.6 mm (Top View) Dimensions are in millimeters Keep area around antenna (approximately 31 mm) clear of metallic structures for best performance 31 mm 31 mm Edge of Ground Plain RN52 RN52 RN52 RN52 Good Acceptable Acceptable Bad |
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