RF circuit of the 54L reference designhttps://devzone.nordicsemi.com/f/nordic-q-a/124225/rf-circuit-of-the-54l-reference-designIn the reference schematic design of the 54L, why does the RF circuit use three LC circuits? What is the purpose? This approach would likely result in higher insertion loss, so why not use a low-pass π-circuit instead?en-USTelligent Community 13Mon, 15 Sep 2025 08:01:37 GMTRE: RF circuit of the 54L reference designhttps://devzone.nordicsemi.com/thread/548699?ContentTypeID=1Mon, 15 Sep 2025 08:01:37 GMT137ad170-7792-4731-bb38-c0d22fbe4515:ace3c097-326f-412a-b0fd-5216a766def9PaKa<p>Because the harmonic suppression won&#39;t be good enough.</p><div style="clear:both;"></div>RE: RF circuit of the 54L reference designhttps://devzone.nordicsemi.com/thread/548695?ContentTypeID=1Mon, 15 Sep 2025 07:43:43 GMT137ad170-7792-4731-bb38-c0d22fbe4515:66233921-3311-486f-9da8-ef42f322b080zhanxy<p><span>&nbsp;This approach would likely result in higher insertion loss, so why not use a low-pass &pi;-circuit instead?</span></p><div style="clear:both;"></div>RE: RF circuit of the 54L reference designhttps://devzone.nordicsemi.com/thread/548572?ContentTypeID=1Fri, 12 Sep 2025 09:26:46 GMT137ad170-7792-4731-bb38-c0d22fbe4515:7edaa905-c30c-4fe1-b6d4-419571e79d8fPriyanka<p>Hi,</p> [quote user=""]why does the RF circuit use three LC circuits? What is the purpose? [/quote] <p>This is a harmonics filter.</p> <p>-Priyanka</p><div style="clear:both;"></div>RE: RF circuit of the 54L reference designhttps://devzone.nordicsemi.com/thread/548209?ContentTypeID=1Tue, 09 Sep 2025 11:24:31 GMT137ad170-7792-4731-bb38-c0d22fbe4515:0fa4ff93-c66b-4bce-948e-df815225005fPriyanka<p>Hi,</p> <p>I am checking this internally and will get back to you.</p> <p>-Priyanka</p><div style="clear:both;"></div>