Murata Electronics North America 2832 Manual Do Utilizador

Page 16 of 34

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8.3 Layout Guidance for Using Internal PCB Antenna

The MBN52832 module is certified with an internal PCB antenna physically located on the module. For optimum EIRP
(Effectively Isotropically Radiated Power) when use the on-board antenna, please follow the following recommendations
in the customer host circuit board design.

A. The module is recommended is be placed on top left corner of the host circuit board.

B. Around the antenna area, all layers of the customer circuit board should be free of any metal objects. Specifically,

there should be no ground plane, traces or metal shield case

C. Host circuit PCB length is longer than 40mm to get optimal performance by using ground plane.

D. Right side of antenna area also should be free of grounds.

E. Metal and plastic materials should be away from the module. (more than 3mm)

Figure 8.3 Layout Guide for Antenna Performance (1)

F. To use this internal antenna, the integrator must provide a simple two-component matching circuit between pins

20 and 21 of the module. This circuit will connect the RF I/O of the module directly to the PCB antenna. The
picture below shows the location of pins 20 and 21.