https://devzone.nordicsemi.com/f/nordic-q-a/21911/antenna-designHi, I use NRF51822 to design a ble product,my client require that when in the front of the ble device the app can connect the ble device,and can&#39;t connect in the back of it.is it possible to design a antenna that in the fornt of the ble device thereen-USTelligent Community 13Tue, 09 May 2017 09:18:14 GMThttps://devzone.nordicsemi.com/thread/86034?ContentTypeID=1Tue, 09 May 2017 09:18:14 GMT137ad170-7792-4731-bb38-c0d22fbe4515:8854bca8-9278-4c47-b466-0ffdd4f9ad35ben<p>ok,thank you very much for your help.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/86033?ContentTypeID=1Tue, 09 May 2017 09:01:42 GMT137ad170-7792-4731-bb38-c0d22fbe4515:78e20404-8ec1-4720-81da-e51dee45e3b1Janek Mann<p>No, that&#39;s not possible. RF doesn&#39;t work like that, even if it were possible to design such an antenna (it&#39;s not in practice) the signal would get bounced back from any nearby surfaces.</p><div style="clear:both;"></div>