WQZQ295 Posted September 15, 2022 Report Share Posted September 15, 2022 Does wall thickness really matter? About Antenna's; so, if I was to make a copper J-pole antenna, does the wall-thickness really matter? So as long it's made to the right overall specs, right/wrong? Quote Link to comment Share on other sites More sharing options...
Sshannon Posted September 15, 2022 Report Share Posted September 15, 2022 19 hours ago, WQZQ295 said: Does wall thickness really matter? About Antenna's; so, if I was to make a copper J-pole antenna, does the wall-thickness really matter? So as long it's made to the right overall specs, right/wrong? Practically speaking, wall thickness matters only for resistance to physical damage. WQZQ295 1 Quote Link to comment Share on other sites More sharing options...
Sshannon Posted September 15, 2022 Report Share Posted September 15, 2022 An increase in outside diameter does result in slightly greater bandwidth (a wider band of low SWR). I doubt it’ll make a huge difference though. WQZQ295 1 Quote Link to comment Share on other sites More sharing options...
Lscott Posted September 15, 2022 Report Share Posted September 15, 2022 1 hour ago, WQZQ295 said: Does wall thickness really matter? About Antenna's; so, if I was to make a copper J-pole antenna, does the wall-thickness really matter? So as long it's made to the right overall specs, right/wrong? The wall thickness doesn't matter for RF performance. It is a factor for the mechanical strength. However the larger diameter of the conductor will make a noticeable difference in the bandwidth of the antenna. The larger diameter will result is a low SWR over a wider range of frequencies. WQZQ295 1 Quote Link to comment Share on other sites More sharing options...
KAF6045 Posted September 15, 2022 Report Share Posted September 15, 2022 4 minutes ago, Lscott said: The wall thickness doesn't matter for RF performance. It is a factor for the mechanical strength. However the larger diameter of the conductor will make a noticeable difference in the bandwidth of the antenna. The larger diameter will result is a low SWR over a wider range of frequencies. It might require tweaking the dimensions some to return to the desired band tuning. WQZQ295 and Lscott 1 1 Quote Link to comment Share on other sites More sharing options...
WRKC935 Posted September 16, 2022 Report Share Posted September 16, 2022 Yeah, wall thickness is more about structural integrity than RF emission. If you look up 'skin effect' you will find that UHF rides right on the face of an antenna, not through the whole element. And the depth it rides in is far smaller than anything you are gonna find to make an antenna out of so I wouldn't be concerned with that. Now it was mentioned about the diameter of the antenna elements and how bigger diameters have a wider bandwidth. This IS important and can throw off the design a bit. So be aware of that. WQZQ295 1 Quote Link to comment Share on other sites More sharing options...
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