The copper thickness-->affect the PCB antenna and RF trac

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The copper thickness-->affect the PCB antenna and RF trac - RF Cafe Forums

Because of the high maintenance needed to monitor and filter spammers from the RF Cafe Forums, I decided that it would be best to just archive the pages to make all the good information posted in the past available for review. It is unfortunate that the scumbags of the world ruin an otherwise useful venue for people wanting to exchanged useful ideas and views. It seems that the more formal social media like Facebook pretty much dominate this kind of venue anymore anyway, so if you would like to post something on RF Cafe's Facebook page, please do.

Below are all of the forum threads, including all the responses to the original posts.

wccheng

Post subject: The copper thickness-->affect the PCB antenna and RF trac

Posted: Wed Nov 16, 2005 8:56 am

Captain

Joined: Tue Nov 08, 2005 10:13 pm
Posts: 8

Dear all,

For the original design, the copper thickness at toppest and lowest PCB is 1.5oz. If we change it to the 0.5oz or 1.0oz thickness, what were the effect for the PCB antenna and the RF trace path? (The PCB antenna and the RF trace path are on the toppest and lowest PCB) Do I need to re-design the PCB antenna dimension and the width of the RF trace path after I change the thickness of the copper?

thanks

wccheng

tbone

Post subject:

Posted: Wed Nov 16, 2005 12:06 pm

Captain

Joined: Sat Aug 30, 2003 6:42 pm
Posts: 5

Hey Cheng, copper thickness will not make much difference. Take a look at the effective trace width and and substrate height equations and you will see trace has a very small effect. Nevertheless, you will probably want to adjust it to get maximum performance, particularly when allowing for ecthing tolerances.

Hey! the pictures worked!

Good luck to you.

tbone

wccheng

Post subject:

Posted: Wed Nov 16, 2005 9:06 pm

Captain

Joined: Tue Nov 08, 2005 10:13 pm
Posts: 8

How about the PCB antenna?
thanks

Joel-Tang

Post subject: for antenna

Posted: Mon Dec 12, 2005 10:58 am

Lieutenant

Joined: Fri Dec 09, 2005 10:18 am
Posts: 3

The answer should be the same for the antenna.

Honza

Post subject:

Posted: Tue Dec 13, 2005 2:32 am

From my experience,

the effect of copper thickness is negligible. Go and build your antenna...

H.

UWB_antenna_guy

Post subject:

Posted: Tue Dec 13, 2005 12:04 pm

Colonel

Joined: Tue Aug 09, 2005 1:07 pm
Posts: 28

same here. If you model it in HFSS, you see barely any difference between 0.5 and 1.5oz copper traces. Also, you can safely model the trace with an infinitesimal sheet.

FYI, I have seen this for frequencies from 1-6GHz...

Posted 11/12/2012

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