4 port Wilkinson combiner / splitter question

[Chris Wilson]

I am sad to say my maths are far below the required to work out inductance and capacitance values for a 4 port Wilkinson combiner based on this YouTube video linked below. I successfully made a 3 port one using this on line calculator (below), but despite intense Googling I cannot find one for a 4 port version. I need to make one for four 50 Ohm port impedances in and out on 137.5 kHz (LF). A big ask but if someone has bit of spare time the figures for the needed caps and inductances would be GREATLY appreciated, some Paypal money is not a problem! I will be using a star format resistor network, and I know these need to be Zo (50 Ohms) each.


This is the video on multi port Wilkinsons:

This is the on line 3 port calculator: https://leleivre.com/rf_wilkinson.html

Thanks for any help!

 

[JimB]

OK, try this:

For Zo = 50 Ohm
F = 137.5 kHz
Ports = 4

L = 115.8uH
C = 11.575nF (4C = 46.3nF)

JimB

 

[Chris Wilson]

Thank you VERY much JimB that was very helpful and using an on line reactance calculator I managed to get the same result and now understand the procedure enough to build it