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All things pertaining to wireless and RF links
By fannta
#194052
Hello sparkfun fellows

Recently I got hold of an antenna which uses dual inputs for my WRT54 router. As it has two external antennas the new antenna got attached to extend the range. As the antenna is inside a housing one could not tell from the outside whats inside.

Then I had to open the antenna housing to see whats inside, what made me wonder, because my assumption so far was that combining two outputs by simply joining then would be of no benefit it nor worse.

This is what was inside the housing:

Image

The two solder blobs are actually the two antenna cores, simply soldered to the very same PCB.

Image

Furthermore the PCB is somewhat bent, I want to correct it but don't know what the distance between the ground plane and active element should be. Maybe someone can give me a hint.

Thanks in advance.