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Question about broadband tee junction

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sviodo

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rf tee junction

I have to make a broadband tee junction however i encounter several problms tweakinng my idea of project. Not only did I use czebyshew transformer but also I was trying to increase bandwith by increasing number of transformer sections. Till now with a tiny sucess.
I was wondering if there is better idea to increase banwith or improved tee junction project :>

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Sviodo
 

g86

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Re: tee junction

Maybe you need a very good tee. Otherwise multisectin czebyshew transformer is really a good choice. Can you please mention your requirements.

:!: :idea: :?:


sviodo said:
I have to make a broadband tee junction however i encounter several problms tweakinng my idea of project. Not only did I use czebyshew transformer but also I was trying to increase bandwith by increasing number of transformer sections. Till now with a tiny sucess.
I was wondering if there is better idea to increase banwith or improved tee junction project :>

--
With Regards,
Sviodo
 

Spasomat

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Hi Sviodo,

which bandwith at which frequency do you want to have?
What VSWR?
And what dividing ratio? 1:1?

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Spasomat
 

sviodo

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My tee junction should operate at 12GHz with bandwidth as good as possible, S11 must be less than -20dB and of course it is 3dB power divider.
BTW it is microstrip sandwich structure.


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Sviodo
 

g86

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I think your method is good enough. have you chamfered the T junction? Multi section chebychev transformer can be used in both hoizontal or vertical arms. Sometimes the ripples may cross -20 dB due to some other subtrate parameters like dispersion, feed inductance. In that case binomial transfomer can be tried.

:!: :idea: :?:

sviodo said:
My tee junction should operate at 12GHz with bandwidth as good as possible, S11 must be less than -20dB and of course it is 3dB power divider.
BTW it is microstrip sandwich structure.


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Sviodo
 

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