ring coupler 1 to 4 dividing and combiner network question

Thread Starter

yef smith

Joined Aug 2, 2020
1,447
Hello , i need to split my input power into 4 then amplify then reunite them again using quadrature coupler.
i am following the idia shown in the diagram bellow.
I have build a splitter as shown below(port input is 3 and outputs are 2 4 5 6)
the s-param results are as shown bellow.The S5p file of the splitter is attached.
the problem is when i try to recombine the power back i get -40 dB insertion loss.
I try to connect the two halfs not in simetrical way ,still its not working.
why its not adding back?
even if you try schematics way using the attached S5p in ADS its not working.
Where did i go wrong?
Thanks.

https://drive.google.com/file/d/16gHsc6e1PluUqIZPig151BzR_zf0wrJ4/view?usp=sharing

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Thread Starter

yef smith

Joined Aug 2, 2020
1,447
UPDATE:
The answer is that in the mirror each sub coupler need its input legs to be switched(except the isolation)
I'll be happy to understand will for splitting and recombining on the recombining part we need to flip legs?
Thanks.
 
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