You do not show your reference or design specs. What do help do you need? Finding a better design reference for a Wilkinson 1:4 metasurface antenna? how to write design specs?I am trying to replicate the 1:4 wilkonson power divider attached to this post. Not enough information is given regarding the dimensions, that is why I could not design it. How can I design the exact same circuit without knowing the dimension? I am going to use the design as a feed network for a metasurface antenna.
Hello,The Length of the Transmission Lines have no importance since the Matching between Input Impedance of the Dividers and Line Impedances. But there may also be a Phase Shift for a particular reason, I don't know.
I believe there is a Step-Matching Purpose between Driving Transmission Lines and Branch Lines so not everything is 50 Ohm . They seem different. I recommend you to design The Wilkinson Dividers first ( I guess you how to do ) then tie them in this configuration.
But this structure is asymmetric so there will be lot of troubles while designing.
the only thing I know is that the line impedances are 50-ohm
Thank you Sir. How do I find the electric delays of the transmission lines? What do you mean by start with designing "normal" Wilkonsons? That is the part that confuses me because in order to be able to create transmission lines width and length, we need the impedance and electric delays and in our case, the electric delays are unknown.Do you mean line in the Wilkinson or line at the Wilkinson output? Wilkinson divider doesn't work with 50 Ohm lines everywhere.
I think it is only drawn that way in the simplified figure in the paper, and does not show all differences in line width.
So I agree with Bigboss: start with designing "normal" Wilkinsons. For the two lines, I agree that phase difference should be n*360° for symmetry reasons.
You will need a much better design to achieve effective low loss and high directivity.BW = 4.2GHz - 6.2GHz.
f0 = 5.5GHz
S11 <= -20dB
Gain = 11-13.3 dB
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