Version 4
SHEET 1 1024 1552
WIRE -224 240 -224 176
WIRE -224 176 -80 176
WIRE -224 320 -224 480
WIRE -80 176 -48 176
WIRE 32 176 224 176
WIRE 592 624 768 624
WIRE 48 624 592 624
WIRE -32 624 -80 624
WIRE 288 176 592 176
WIRE 592 176 768 176
WIRE 768 176 768 256
WIRE 768 336 768 480
WIRE 768 624 768 704
WIRE 768 784 768 928
WIRE -80 624 -80 176
FLAG -224 480 0
FLAG 768 480 0
FLAG 592 176 n002
FLAG 768 928 0
FLAG 592 624 n021
SYMBOL voltage -224 224 R0
WINDOW 0 64 16 Center 0
WINDOW 123 24 132 Left 0
WINDOW 39 24 160 Left 0
SYMATTR InstName Source
SYMATTR Value2 AC 1
SYMATTR SpiceLine Rser=0.1
SYMATTR Value ""
SYMBOL res 48 160 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName ZA1
SYMATTR Value {R}
SYMBOL res 752 240 R0
SYMATTR InstName R2
SYMATTR Value {R}
SYMBOL FerriteBead2 256 176 R90
WINDOW 0 -9 0 VBottom 0
SYMATTR InstName L5
SYMATTR Value 1.381µ
SYMATTR SpiceLine Ipk=0.2 Rser=0.35 Rpar=754 Cpar=784f mfg="Wurth Elektronik eiSos" pn="742 792 04"
SYMBOL res 64 608 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName ZA2
SYMATTR Value {R}
SYMBOL res 752 688 R0
SYMATTR InstName R10
SYMATTR Value {R}
TEXT -66 808 Left 0 !.ac oct 100 1E6 1E9
TEXT -32 -24 Left 0 ;For modeling of insertion loss you have to simulate both cases:
TEXT -32 8 Left 0 ;1) the filtered system with the selected Ferrite Bead (L5) =>V(n002)
TEXT 72 40 Left 0 ;2) the unfiltered system without Ferrite Bead (n021)
TEXT -48 72 Left 0 ;and then plot by (ALT+Double Click) expression: e.g.  V(n002)/V(n021)
TEXT -72 768 Left 0 !.step param R LIST 1 10 50