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Dual Band Cantenna

A cantenna ( blending the words can and antenna) is a homemade directional waveguide antenna, made out of an open-ended metal can. Cantennas are typically used to increase the range of (or discover) wi-fi networks.
Although some designs are based on a  can, this tube is too narrow to increase the 2.4 GHz signal by a useful amount, although at 5 GHz it would be about the right size. However, a cantenna can be made from various cans or tubes of an appropriate diameter. Some designs include a pole mount to elevate the cantenna.

DB_KANT.JPG

kantenna_01.jpg

kantenna_02.jpg

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Yes, but a lot more interesting would be with a dielectric lens,,,!!!

 

35.jpg

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I have a 2.4Ghz cantenna almost exactly like this I've used reliably for ten years.

I'd like to add the 5.5Ghz element at the back, but I have one question.

The element has two risers to the ring - one to the feed, and the other to what?

 

Much obliged.

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By adding a dielectric rod waveguide (DRW) to the feed, it can increase the bandwidth of the frequency up to 3.5GHz,,,,

034.jpg

,,,your cantenna is different from mine..!!!

,,,, but you have to give me the dimensions to your cantenna...!!!

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I like the look of this... it seems to be as good (if not better than) the 2.4Ghz Patch antenna.... and it can do 5Ghz too!

The size is perfect.

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,,,, I don't know exactly, it needs to be checked again, the project is very old...!!!

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On 05/11/2020 at 2:56 PM, Admin said:

,,,, I don't know exactly, it needs to be checked again, the project is very old...!!!

OK, thanks for the reply, I'l maybe try the red dimensions and see how it goes

 

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,,, okay, but you have to tell me what kind of box-can you have (what dimensions are close to the one I exposed)...!!!

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Hi, I can make it any size as I will be fabricating it from copper or galvanised sheet.

Whatever is the optimum dimensions, your design is nice and short so keep the length as small as possible.

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,,, well, then let me do another simulation with optimizations...!!!!

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,,,double band no, but broadband yes...!!!

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did you manage to check if the red dimensions are optimal?

No worries if not, sorry if you are a busy man

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,,,okay,I will try....!!!

,,, but it would be better to try this...

 

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