rf1008
Full Member level 2
I simulated UHF patch antenna with circular polarization in HFSS, and found the permittivity impact on AR is very large. e.g. when er=4.0,AR is 1.5, when changed er to 4.2, AR is 10.
It's too much variation although i chould fine tune the model to improve the AR.
Is my conclusion right ? thanks!
BTW: FR4 sub and single input with back feed.
It's too much variation although i chould fine tune the model to improve the AR.
Is my conclusion right ? thanks!
BTW: FR4 sub and single input with back feed.