Data Sheet

LC840PA

Datasheet

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7.2 Host PCB Land Pattern and Antenna Keep-Out for the 453-00087

Figure 11: Land pattern and Keep-out for the 453-00087

All dimensions are in mm.

Host PCB Land Pattern and Antenna Keep-out for the 453-00087 Notes:

Note 1

Ensure there is no copper in the antenna ‘keep out area’ on any layers of the host PCB. Also keep all mounting

hardware or any metal clear of the area (Refer to 6.3.2) to reduce effects of proximity detuning the antenna and to

help antenna radiate properly.

Note 2

For the best on-board antenna performance, the module 453-00087 MUST be placed on the edge of the host

PCB and preferably in the edge centre and host PCB, the antenna “Keep Out Area” is extended (see Note 4).

Note 3

LC840PA development board has the 453-00087 placed on the edge of the PCB board (and not in corner) for

that the Antenna keep out area is extended down to the corner of the development board, see section PCB

Layout on Host PCB for the 453-00087, Figure 11. This was used for module development and antenna

performance evaluation.

Note 4

Ensure that there is no exposed copper under the module on the host PCB.

Note 5

You may modify the PCB land pattern dimensions based on their experience and/or process capability.