https://devzone.nordicsemi.com/f/nordic-q-a/129517/printed-pcb-antenna-and-aluminium-housingHello, My BLE board with a printed PCB antenna, preferably a meander one, will be housed in a perforated aluminium casing. Will I be able to communicate with the outside with my board? And if this will cause any problems (range, tuning..), what canen-USTelligent Community 13Fri, 30 Oct 2026 10:40:05 GMThttps://devzone.nordicsemi.com/thread/572750?ContentTypeID=1Fri, 30 Oct 2026 10:40:05 GMT137ad170-7792-4731-bb38-c0d22fbe4515:7f242bbd-3cd1-440f-b7e0-79120f98e046Bendik Heiskel<p>Hi,</p> <p>A antenna fully enclosed in aluminum, even with perforations will have very poor TRP.</p> <p>For the antenna to have the best opportunity to function properly a opening in the enclosure should be places directly over/next to the antenna. This opening should be fairly large at a minimum the opening should be larger than 1/4 wavelength, ~31mm, but ideally closer to 1/2 wavelength ~62mm.</p> <p>If your product only needs a short range, just a couple of meters, a smaller opening may work, but without simulating the antenna and the enclosure it is difficult to tell how well it would work.</p> <p>For the best performance I recommend using a external antenna, as this negates all the issues with the metal enclosure.</p> <p>&nbsp;</p> <p>Best regards,</p> <p>Bendik</p><div style="clear:both;"></div>