LC parallel tank filter

Hi to all

Is it possible to block 20V AC signal
with L-C parallel tank filter around 15 MHz
or should i have some of them,

BR
Arye Nudelman

Can you give us some more details; source output impedance, load impedance, intended frequency range, required attenuation, etc?

i'm measuring w Network analyzer from some 50 Ohm chip output to some load with a matching system between, in 15-20 Mhz freq

sometimes i'm connecting in parallel to the load some impedance and it seems like this new parallel impedance talking the energy,

so what i wish is to connect some filtering block in the ports of the new paralle to load impedance
that in those freqs the new impedance will be like an open circuit .
is it possible w using LC tank?
Thanks
Arye