RF circuit of the 54L reference design

[zhanxy]

In 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?

[Priyanka]

Hi,

I am checking this internally and will get back to you.

-Priyanka

[Priyanka]

Hi,

why does the RF circuit use three LC circuits? What is the purpose?

This is a harmonics filter.

-Priyanka

[zhanxy]

 This approach would likely result in higher insertion loss, so why not use a low-pass π-circuit instead?

[PaKa]

Because the harmonic suppression won't be good enough.