How can i calculate Dielectric constant?

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nadabro

Joined: 08 Mar 2007
Posts: 33
Helped: 2

03 Aug 2008 15:36 calculate dielectric constant

Hi..

I´ve a presentation of a patch antenna in September in my university and i was thinking to protect the antenna with Acrylic sheet´s, but i cant find any information about the Dielectric constant of Acrylic..

-Anyone knows the Dielectric constant of Acrylic?

-how can i measure/calculate the Dielectric constant of Acrylic?

Big thanks.

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Abhishekabs

Joined: 12 Jan 2007
Posts: 727
Helped: 84
Location: India

03 Aug 2008 16:27 calculating dielectric constant

dielectric constant is 3.3
Here is some information on measurement
http://rimstar.org/materials/dielectrics/lucitedc1/lucitedc1.htm

Enjoy,
Abhishekabs

nadabro

Joined: 08 Mar 2007
Posts: 33
Helped: 2

03 Aug 2008 18:14 dielectric constant of acrylic

thanks!

For the next weeks my university will be closed to test the simulations, do you think that 2mm of Acrylic will have a big impact on the performance of the patch antenna (5Ghz)?

The Acrylic will be only for protection ( weather/people thouching it/etc), maybe the acrylic sheet will be 2cms away from the PCB.

Abhishekabs

Joined: 12 Jan 2007
Posts: 727
Helped: 84
Location: India

04 Aug 2008 5:00 how to calculate dielectric constant

I was reading 1 paper & i found that there may be some effect on efficiency.
I have found 1 IEEE paper & I am attaching it here for you.
That may be help.
In that paper coupling effects of closely packed patch antenna are studied.
That is all I know.
Smile