Problems with the connector in application example "Design an Internally Matched Ultra-wideband Vivaldi Antenna"

Hi,

I am developing a vivaldi antenna for a radar design with which I am working. I followed the example of the application Designing an internal bandband Vivaldi antenna with internal pairing and everything works fine, except when I tried to place an SMA connector on the board. The problem is that I did not find in the documentation any command or function to indicate to matlab where to place my connector. I assumed that with the feed location created, the sma connector takes these parameters as input, but this was not the case. I attach the images that I have generated directly from the gerber files. As seen in the images, it seems that there is no capacitive connection and, in addition, I would say that the connector is upside down. The other option I have is to import the gerber files directly to Keysight ADS and solve this issue directly on it. Thank you in advance.

Answer 1

[Vishwanath Iyer]

Hi Oscar,

Thanks for posting this question and highlighting this issue. May I suggest that prior to generating the Gerber files, swap the top and bottom layers in the pcbStack object. As an example, if the name of the pcbStack antenna object is x

,then make a copy of the contents of the Layers property and swap (I assume that the second layer is dielectric here):

L = x.Layers;
x.Layers{1} = L{3};
x.Layers{3} = L{1};

Now proceed as before with the Gerber file generation.

Hope this helps.

Warm regards,

Vish

[Oscar]

Thank you, for your quick response.

I will try it, but I will do as well with ADS. Regards,

Oscar Romeu