Calculating the Values
The values shown are for a 70MHz center frequency
Lz = SQRT(2) x Zo where Zo is the system impedance
L = Lz / 2x Pi x f (H) where f is the center frequency
C = 1 / (2 x Pi x f)2 x L (F)
C1 = 2 x C
R = 2 x Zo ohms
Test results for the board I built
Isolation
Insertion Loss
I have produced a PCB for the Splitter which may be of some use to you. The resistor and capacitor are 0805 and the inductors are Coilcraft 1008CS. The SMA's or SMB's are PCB mount. The PCB is double sided with a ground plane on the TOP. The track side is shown below. I have added the Gerber files for the track side and drilling.
