Design of Wideband Planar Coupler using ADS

hello every one!
I need help in designing Wideband Planar Coupler using ADS with following specs:
Centre frequency f0 = 1800 MHz
Frequency band width = 10 % i.e band width = 180 MHz.

If any one have the design or can help me out understanding it please reply.
regards

Q.Khan

You do not know much about the coupler. So I suggest to read it fully, because the important parameter is coupling coefficient which is the meaning for coupler and is missing in the above specification.
Once you read the topic and understood it is very simple task for you. I mean you do not need any help from us.

Its true I'm not sure about the designing in ADS.
I need help in understanding this software named; Advanced designs systems, not in understanding couplers.
Thanks any ways.

Regards
Q.Khan

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