Dielectric Lens excited by Rectangular Patch Antenna [FEKO Simulation]

[fireboy]

Hello Everyone...i'm new to this forum...I'm doing a hobby project which is simulation of A spherical shaped dielectric lens excited by patch antenna using FEKO software..So as i said using FEKO i have designed a rectangular patch antenna in infinite ground plane ...i'm getting gain of some 4.62 dB..
i want to excite a spherical lens antenna using this rectangular patch. i tried placing the lens directly above the patch... there was no gain improvement..it was 4.62dB only..
please help..

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Someone plz help me out...

 

[fireboy]

Help anyone..someone atleast tell me how to couple the radiated field from patch antenna to the shaped lens..

 

[rfmw]

It is strange that the added lens did not affect the radiation pattern/gain and you've got the same gain value. Did you assign an Er to the lens material?

 

[fireboy]

Yes...its made of teflon...er=2.2...and patch has infinite ground plane...