https://devzone.nordicsemi.com/f/nordic-q-a/19909/meander-antenna-keepout-zoneHello, I am going to us the meander antenna from the nrf51 usb dongle. Are there any drafts with correct dimensions? And second what should be the minimum distance between the antenna and the ground plane? In your reference design of the usb dongleen-USTelligent Community 13Wed, 22 Feb 2017 09:35:18 GMThttps://devzone.nordicsemi.com/thread/77467?ContentTypeID=1Wed, 22 Feb 2017 09:35:18 GMT137ad170-7792-4731-bb38-c0d22fbe4515:9df27ec6-972a-4a6a-93fe-0711d50ea56aJ&#248;rn<p>Hello Florian</p> <p>Please see the answer in this question:</p> <p><a href="https://devzone.nordicsemi.com/question/42427/layout-review-of-meandering-antenna/">devzone.nordicsemi.com/.../</a></p> <p>You can find a link to the hardware files of the USB dongle there.</p> <p>To summarize, the reference designs give good results and it is recommended that you follow them.</p> <p>Changing the distance to the ground plane affects the capacitance between the antenna and ground, which in turn can affect the antenna performance unless this is compensated for.</p> <p>Best regards</p> <p>Jørn Frøysa</p><div style="clear:both;"></div>