Because of the high maintenance needed to monitor and filter spammers from the RF Cafe Forums, I decided that it would
be best to just archive the pages to make all the good information posted in the past available for review. It is unfortunate
that the scumbags of the world ruin an otherwise useful venue for people wanting to exchanged useful ideas and views.
It seems that the more formal social media like Facebook pretty much dominate this kind of venue anymore anyway, so if
you would like to post something on RF Cafe's
page, please do.
Below are all of the forum threads, including all
the responses to the original posts.
Post subject: 4-way Wilkinson power splitter
Wed Dec 29, 2004 10:54 pm
I would like to design a four-way
Wilkinson power splitter at 100 MHz. I would like to split the 1 W power
in to two Wilkinson splitters, starting the design on microstrip. The
four, quarter wavelength would be realised using 75-Ohm coaxial cable,
and each cable would terminate in to 50 Ohm. My question is could I
place the two 100-Ohm resistors at the start off each separate pair
of ¼ wavelength coaxial splits on the circuit board?
postPosted: Mon Jan 24, 2005 6:09 pm
Can I have more info to
help you. Are you saying to start with a characteristic impedance of
75 ohms and end it with 50 ohms?
Unread postPosted: Wed Jan 26, 2005 1:16 pm
I'm sure the Zo = 50ohms. For a Wilkinson Splitter the quarte wave
lines = Z = 50 * (SQRT)2.
Which is 70.7 ohms, 75 coax is usually
The 4 100ohm resistor need to be between the outputs
of the spitters
to acheive good isolation.
That's my 1 cent
Sat Mar 26, 2005 9:44 am
Sorry guys, you're on the wrong track
here - at 100Mhz use lumped elements , unless you like wasting money
on coax cable.
I have sucessfully used lumped element wilkos
at 500 MHz.Posted 11/12/2012