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Power Handling Capability of Microstrip device or antenna

 
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g86



Joined: 21 Jan 2003
Posts: 208
Helped: 4
Location: On top of antenna :))
Post06 Mar 2003 19:42   Power Handling Capability of Microstrip device or antenna
Can anybody tell me how to calculate the power handling capability of a microstrip antenna or device. Expecting some materials and close form equations.

Thanx in advance

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Element_115



Joined: 23 Mar 2002
Posts: 313
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Post06 Mar 2003 20:16   
The best place for this information would be at
--> www.rogerscorporation.com

They have tables for various substrates.
I m using RT/duroid 6002 and we do not want
more than ~1.5KW (@2GHz) on our output power
combinder.

Hope this helps
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g86



Joined: 21 Jan 2003
Posts: 208
Helped: 4
Location: On top of antenna :))
Post06 Mar 2003 20:56   
Thanks for the information but I could not find it. Can you please give me the exact link.

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Element_115 wrote:
The best place for this information would be at
--> www.rogerscorporation.com

They have tables for various substrates.
I m using RT/duroid 6002 and we do not want
more than ~1.5KW (@2GHz) on our output power
combinder.

Hope this helps
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flatulent



Joined: 19 Jul 2002
Posts: 4856
Helped: 292
Location: Middle Earth
Post06 Mar 2003 21:05   rogers calculator
This program by rogers corp will show you the temperature rise in different transmission lines. From this temp rise per kW of power and the data sheet's maximum temperature limits you can back out power.

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g86



Joined: 21 Jan 2003
Posts: 208
Helped: 4
Location: On top of antenna :))
Post06 Mar 2003 22:11   
Oops.. this softy is really good but they are too professonal:( No option for custom material!! They think their product is only substrate that can be used.

Last a few days I am actually using a free substrate:). And have a plan not to use Rogers material until and unless some $ come to my pocket.

Does anybody know which substrate it is?........IT IS AIR

So i can just consider tan(delta) = 0.000 and the maximum power handling capability will depend upon the conductor loss mainly. Still I dont know "How people put stamp '20 Watt' on a power divider". Are they measured? Simulated? Calculated?

Now before starting with Rogers I should start with some cheaper soln where tan(delta) may be a critical factor and I do not have formulla with me to calculate the power handling capability. So my clients will put so many questions over me and thats why I should be prepared man.

Thanks and regards,
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flatulent



Joined: 19 Jul 2002
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Post07 Mar 2003 0:00   custom
The rogers program does allow custom parameters to be used. Just edit the parameter values. For FR4 the esubr is 4 and the loss tangent is about 0.02
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Element_115



Joined: 23 Mar 2002
Posts: 313
Helped: 21
Post07 Mar 2003 0:55   
Here's the path to the different types of materials, but
you must choose based on your requirements.
It is not an easy site to navigate but that's life.

Cheers
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g86



Joined: 21 Jan 2003
Posts: 208
Helped: 4
Location: On top of antenna :))
Post07 Mar 2003 17:01   Re: custom
Thans a bag to both of you.

Yes I could use the rogers program. I am withdrawing my statement against them. Now me and my cliens will be happy.

BTW if anybody has any closeform equation then please PM me.

Have fun...RF is [Really Funny]

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flatulent wrote:
The rogers program does allow custom parameters to be used. Just edit the parameter values. For FR4 the esubr is 4 and the loss tangent is about 0.02
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