Photonic Band Gap structures in microwave frequencies
I am compiling a list of demonstrated/potential applications of the PBG technology in microwave frequency range. I have an initial list of 3 applications. Can you all add to it
1) P@tch antenna performance enhancement
2) Band stop filters
3) High Q resonators
Please do contribute more to this list.
-svarun
I think FSS frequency selective surface
PL
I assume you refer to the patch antenna substrate made with PC structure, it can also be the ground layer with PC holes, or there can be a dielectric overlay made of EBG material.
Here are some more, not all very practical, but I saw papers on them:
Patch antenna array substrates (reduced coupling between patches)
Actual 3D antenna made out of PC with well-designed defect lines (so not patch antenna with EBG substrate)
Waveguides formed by line defects in the PCs (yes, even at mw frequencies)
Directional couplers with these waveguides
Creation of metamaterials, materials with design made properties.
Added after 3 minutes:
I don't know why in my post the word "pαtch" was replaced by "fix" ... ???
what is PBG ?
photonic band-gap
Hello,
You can find good documents & descriptions at
https://www.edaboard.com/viewtopic.php?p=480491#480491
Hi Svarun,
I think a good example is the use of PBG 2D structures as Artificial Magnetic Conductors (AMC ,or High Impedance Surfaces, HIS).
AMC can reduce surface currents and scattering from edges and other discontinuities on the surface. This reduces sidelobes and allows the integration of other adjacent components on the same board.
Regards,
P.
One application of EBG surfaces is in the area of power plane noise mitigation. Look into work by Omar Ramahi at U of Maryland.
eckypting
You can visit below web sites for some excellent information about photonic crystals:
http://www.pbglink.com/
http://ab-initio.mit.edu/mpb/
http://www.mwlab.ee.ucla.edu/main.htm