https://devzone.nordicsemi.com/f/nordic-q-a/14387/bidirectional-antennaHi, are where any examples for a bidiractional Antenna and nrf51 for location usage? Thank youen-USTelligent Community 13Thu, 09 Jun 2016 07:03:32 GMThttps://devzone.nordicsemi.com/thread/54933?ContentTypeID=1Thu, 09 Jun 2016 07:03:32 GMT137ad170-7792-4731-bb38-c0d22fbe4515:4b25bb6f-8c9f-4832-9895-1cf4d236e935awneil<p>OK - so not really a &quot;bidirectional antenna&quot; at all, then.</p> <p>What you&#39;d be doing is basically similar to what a <strong>Diversity receiver</strong> does - so may be worth googling that for some general info...</p> <p><a href="https://en.wikipedia.org/wiki/Antenna_diversity">en.wikipedia.org/.../Antenna_diversity</a></p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/54937?ContentTypeID=1Wed, 08 Jun 2016 23:09:58 GMT137ad170-7792-4731-bb38-c0d22fbe4515:3b6341d3-9983-4b62-b8a2-cd2fe3c7511dDave_couling<p>Sorry, I&#39;ve never actually created a design with an RF switch. But just be sure read the datasheet closely and it should be fine. I&#39;m sure someone from Nordic could chime in as well.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/54936?ContentTypeID=1Wed, 08 Jun 2016 23:04:13 GMT137ad170-7792-4731-bb38-c0d22fbe4515:a0fe2db9-d882-4744-8887-e2dcc8690553Eddy<p>Thank you. I will try that. Have you any recommendations for the design?</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/54935?ContentTypeID=1Wed, 08 Jun 2016 23:01:48 GMT137ad170-7792-4731-bb38-c0d22fbe4515:723cd54e-e156-457b-8c49-ca8912ee61eaDave_couling<p>You&#39;d need an RF switch which leads to two different antennas. That way you can switch between the two antenna&#39;s and make you RSSI calculations. Just be sure to trigger the switch during a safe time between RF events.</p> <p><a href="http://www.digikey.com/product-search/en/rf-if-and-rfid/rf-switches/3539655?k=switch&amp;k=&amp;pkeyword=switch&amp;pv130=617&amp;FV=fff40036%2Cfff802c7%2C1a080003%2C1a080004%2C1a080005%2C1a080006%2C1a080007%2C1a080008%2C1a08000a%2C1a08000f%2C1a080010%2C1a080011%2C1a080012%2C1a080013%2C1a080015%2C1a080017%2C1a080019%2C1a08001a%2C1a08001b%2C1a08001c%2C1a080020%2C1a080021%2C1a080022%2C1a080024%2C1a080025%2C1a080026%2C1a080028%2C1a080029%2C1a08002a&amp;mnonly=0&amp;newproducts=0&amp;ColumnSort=0&amp;page=1&amp;quantity=0&amp;ptm=0&amp;fid=0&amp;pageSize=500">www.digikey.com/.../3539655</a></p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/54934?ContentTypeID=1Wed, 08 Jun 2016 15:21:50 GMT137ad170-7792-4731-bb38-c0d22fbe4515:19474eab-c341-4a45-93a4-ec0835310d79MartinBL<p>Unfortunately we don&#39;t have any examples or documentation for that. Just some <a href="http://infocenter.nordicsemi.com/topic/com.nordic.infocenter.whitepapers/dita/whitepapers/white_papers.html?cp=10">white papers</a> with general information about tuning and monopole antenna design.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/54932?ContentTypeID=1Wed, 08 Jun 2016 15:15:34 GMT137ad170-7792-4731-bb38-c0d22fbe4515:40a06c0b-4ccd-4eca-bda5-b8b85b085021Eddy<p>To have two directional Antenna facing different directions. I would like to switch between these Antenna to locate or get the direction of BLE devises with different ble signal strength.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/54931?ContentTypeID=1Wed, 08 Jun 2016 15:11:57 GMT137ad170-7792-4731-bb38-c0d22fbe4515:a3f5809d-5821-4231-8b6f-330f13825a7eawneil<p>What do you mean by &quot;bidirectional&quot; here?</p> <p>All antennas are &quot;bidirectional&quot; in the sense that they can both transmit &amp; receive...</p><div style="clear:both;"></div>