BM78 datasheet(39/60 Pages) MICROCHIP

Part #	BM78

Description	Bluetooth짰 4.2 Dual-Mode Module

PDF	60 Pages

Scroll/Zoom	100%

Manufacturer	MICROCHIP [Microchip Technology]

Direct Link	http://www.microchip.com

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39 / 60 page

 2016 Microchip Technology Inc.

Advance Information

DS60001380A-Page 39

BM78

Figure 6-3 illustrates the recommendations for mount-

ing the BM78SPPS5MC2/NC2 on the host PCB, and it

also shows the minimum ground plane area to the left

and right of the module for the best antenna perfor-

mance.

Avoid top copper layer near the test pin area. When

designing the host PCB, the areas under the antenna

should not contain any top, inner, or bottom copper

layer. A low-impedance ground plane will ensure best

radio performance (best range and lowest noise). The

ground plane can be extended beyond the minimum

recommended as needed for host PCB EMC noise

reduction. For best range performance, keep all exter-

nal metal at least 31 mm away from the ceramic chip

antenna.

FIGURE 6-3:

BM78SPPS5MC2/NC2 HOST PCB MOUNTING SUGGESTION

BM78 Datasheet(PDF) 39 Page - Microchip Technology