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11) Antenna placement tips

 

 

Other tips

・ When touching a human body the antenna resonance shifts towards a lower frequency. Our AM11DP-ST01 should be tuned assuming it's in contact with a human body if it's in a remote control touching a human body.
・ Antenna gain is much worse when the AM11DP-ST01 is mounted near metallic objects like a wall or a door and the antenna should be placed as far as possible from them.
・ A remote control will be encased in a plastic box which shifts the resonance frequency lower and you should tune it with similar conditions to optimize gain while it's being used.
・ If you are using a 2 or 3 layer circuit board you need to have the GND plane above and below it also removed to prevent RF signals from being shielded.

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