Having the intention to phase up a number of smaller PA’s for 1296 MHz the need existed to produce some hybrids for 23cm using PTFE material. In this case I used Taconic material. Why? because I had it available.
The first experiment was a simple 4 port hybrid with good results.
The above hybrid produced following results:
In the graph below you can see S21, being -3.1114dB so from the input to port 2 we have -3dB attenuation
In the graph below you can see the same for port 3.
The graph here shows the isolation between port 1 and 4 and the match of port 4.
And most important the isolation between port 2 and 3 here measured.
The next try was a 4 way splitter.
The test results for the triple hybrid will follow.