https://devzone.nordicsemi.com/f/nordic-q-a/11874/nrf51822-se2576lHello everyone. I want to increase the operating range for nRF51822. To do this I added PA SE2576L in design. Unfortunately, I do not have experience in RF develop, so I just used reccomendations from this topic: devzone.nordicsemi.com/.../howen-USTelligent Community 13Thu, 18 Feb 2016 19:48:00 GMThttps://devzone.nordicsemi.com/thread/44977?ContentTypeID=1Thu, 18 Feb 2016 19:48:00 GMT137ad170-7792-4731-bb38-c0d22fbe4515:03c317d7-2a72-47f2-9c9c-5d5afc98c540Pretensor<p>Thanks for the help.</p> <p>Sincerely, Pretensor</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/44976?ContentTypeID=1Tue, 16 Feb 2016 12:42:15 GMT137ad170-7792-4731-bb38-c0d22fbe4515:9df424d0-4dc9-4c69-9c73-4ce48b3f4086FormerMember<p>The nRF51822 schematic looks fine! My only comment is that VDD on pin 12 should have its own decoupling capacitor. When it comes to the PA, it will not increase the scannable range. The reason is, as mentioned in <a href="https://devzone.nordicsemi.com/question/6416/how-can-i-use-pa-to-increase-the-rf-coverage/">the other discussion</a>, that a LNA will also amplify noise so that the SNR will not be any better. It means that I would recommend you to remove the PA.</p> <p>What is important in order to get a good scannable range is that the layout of the design is good, meaning that it is a copy of our reference layout and that the antenna is well-designed. <a href="https://devzone.nordicsemi.com/tutorials/25/">This</a> tutorial explains the important factors for a good design.</p><div style="clear:both;"></div>