What L is better in RX matching: Wirewound or Multilayer

Hi,

For lowest insertion loss, wire-wound inductors will have better performance than multi-layer inductors. Greater conducted harmonic attenuation can be achieved with wire-wound but they are also "good" unwanted antennas as well. If you have a design that is susceptible for radiated emissions, then mutli-layer inductors could prove to be better than wire-wound due to the unwanted antenna effect.

Wire-wound inductors will generally have a higher Q as well so if this is critical for your match, then this could be the main reason for choosing wire-wound for say an LNA, etc. Not all ref designs use WW-inductors, the China ref design only uses multi-layer inductors due to cost reasons.

Please share the article if possible.

The ref designs from the performance line (CC112x etc) have great sensitivity levels and by using wire-wound inductors we gain a fraction of a dB better performance.