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rob

yagi 2.4Ghz yagi

38 posts in this topic

,,, a new version of the patch-yagi antenna...

91.jpg

93.jpg

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,,,a good solution by choosing a bowl as a reflector...

4.jpg

41.jpg

 

,,,okay,this is my draft,,,!!!

89.JPG

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I started to build one of that kind antennae and I was worried about tunning. I mean as you may see in my photos I was unsure about the distance between elements because of the thickness. I know they are so thick, but I am newbie. Any pieces of advices will be welcome to me!

20190620_155417.jpg

20190620_155430.jpg

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thickness of material > 2 mm ...why ??

should be 0.5-1mm

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This antenna can also be made with a rectangular patches...

 

 

 

36.jpg

41.jpg

And simulation of CST...

New folder (5).zip

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Jomy 

I am confused with all that different sizes of patch and first director

which one give best gain ?

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 This difference, increases the bandwidth and increases the distance between directors can increase the gain of the antenna.

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I mean size or diameter of patch and disector.

first is  68 then i see 62 mm which one is proper?

 that is why i asking

 

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,,,where did you see this...???

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2 hours ago, Admin said:

 This difference, increases the bandwidth and increases the distance between directors can increase the gain of the antenna.

which one increases the bandwidth? vibrator?

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,,,the distance between the vibrator and the first director(0,073*lambda ) as well as their different size...!!!

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the farthest distance between vibrator and first director I've seen is 9-10mm..  

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 i see this on a given site link by you 

there is a patch even 60,5mm and  first director 58 mm instead 54 mm

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