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Shapeways materials for antenna substrate [message #44080] Wed, 15 February 2012 13:44 UTC Go to next message
avatar mayur.sarode  is currently offline mayur.sarode
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Registered: February 2012
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Hello all,
I want to create a printed antenna on a suitable shapeway substrate. Does anyone have an idea if it is possible to create a radiating antenna on the materials provided by shapeway?

Thanks.
Mayur
Re: Shapeways materials for antenna substrate [message #44081 is a reply to message #44080 ] Wed, 15 February 2012 13:54 UTC Go to previous messageGo to next message
avatar stop4stuff  is currently offline stop4stuff
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Hi Mayur,

Welcome to Shapeways! Smile

I haven't a clue about the workings of an antenna, so I'm not sure if the materials would be able to act as an antenna, but if it is the base shape you're needing for doing post production work on to make a functioning antenna then, yes, just about anything you can imagine can be printed.

Paul
Re: Shapeways materials for antenna substrate [message #44090 is a reply to message #44081 ] Wed, 15 February 2012 15:08 UTC Go to previous messageGo to next message
avatar mayur.sarode  is currently offline mayur.sarode
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Hi Paul,
Thanks for the mail. Actually , i want to use the shapeway material as the substrate (base) on which i would like to print or stick an antenna which would be a thin Cu strip. I would like to know some physical properties like the dielectric wrt frequency, loss tangent.
http://www.engadget.com/2011/03/20/nanoparticle-inks-print-3 d-antennas-orders-of-magnitude-better/
Re: Shapeways materials for antenna substrate [message #44096 is a reply to message #44090 ] Wed, 15 February 2012 17:02 UTC Go to previous messageGo to next message
avatar stonysmith  is currently offline stonysmith
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An example: the technical name for WSF is Nylon 12.

If you look that up on the web, you will find:
http://www.goodfellow.com/A/Polyamide-Nylon-12.html

But, this doesn't give you the dielectric constant at different frequency settings. It may be available somewhere.. you'd just have to research it deeper.


Patience, Persistance, Politeness - the 3Ps will help us get us to Perfect Printed Products
Re: Shapeways materials for antenna substrate [message #44280 is a reply to message #44096 ] Tue, 21 February 2012 18:31 UTC Go to previous messageGo to next message
avatar Tamert  is currently offline Tamert
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I have characterized all of the materials provided from shapeways and they are all very lossy with a loss tangent of at least 0.05 at 1 GHz. The white, strong, and flexible is particularly bad because of its extreme porosity. Depending on humidity its dielectric loss tangent varies from at a minimum (after desiccating the sample for 72 hours) of 0.07 up to 0.2 after sitting out in an ambient relative humidity of 35% for 24 hours.

If you do move forward with your idea don't forget that most cyanoacrylate based adhesives are stupidly lossy in the RF-microwave bands. Make sure you choose an rf grade adhesive.
Re: Shapeways materials for antenna substrate [message #44304 is a reply to message #44280 ] Wed, 22 February 2012 08:43 UTC Go to previous message
avatar mayur.sarode  is currently offline mayur.sarode
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Hello all,
Thanks for sharing the valuable information. I will be testing a micorstrip antenna on WSF antenna soon. Will share my results!
@Tamert What do you mean by RF grade adhesive?

 
   
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