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Surface current of a patch antenna

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wajid ali khan

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What is the concept behind surface currents of a microstripe patch antenna? what should be its range for good performance of a patch antenna?

Thanx in advance
 

wajid ali khan said:
What is the concept behind surface currents of a microstripe patch antenna?
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A patch antenna supports currents on its conductors.

wajid ali khan said:
what should be its range for good performance of a patch antenna?
Click to expand...
The magnitude of the currents should be larger than zero.

I surmise from these questions that you aren't understanding the operating mechanism of the patch antenna. See texts such as Balanis or even Wikipedia.
 

@planarMetamaterials: thanx for reply... i know how an antenna operate and i have designed a multiband antenna but i don't know what should be its range (mean maximum upper range limit for working antenna ) my antenna has range of 37 A/m ,60 A/m 45 A/m for different bands
 

what should be its upper limit i have 39 to 60 A/m
 

wajid ali khan said:
@planarMetamaterials: thanx for reply... i know how an antenna operate and i have designed a multiband antenna but i don't know what should be its range (mean maximum upper range limit for working antenna ) my antenna has range of 37 A/m ,60 A/m 45 A/m for different bands
Click to expand...

Sorry for the misunderstanding -- I'm still confused, though -- are you asking what's the maximum current density a typical patch antenna can handle before overheating?
 

Well.... that would depend on a number of factors, such as dielectric material and thickness, trace thickness, ground plane size (for thermal dissipation), etc.
 

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