rf1008
Full Member level 2
Hi all,
I simulated one UHF patch antenna with FR4 sub and found the much impact of the loss tangent. When loss tangent is 0.02, the Gain is only 1.2dBi,efficiency is only 28% .When i changed the loss tangent to 0.002, the Gain is 5.8dBi and the efficiency is 80%.
My question is that is there any methods to improve above performance except using low loss tangent substrate to replace FR4. thanks!
I simulated one UHF patch antenna with FR4 sub and found the much impact of the loss tangent. When loss tangent is 0.02, the Gain is only 1.2dBi,efficiency is only 28% .When i changed the loss tangent to 0.002, the Gain is 5.8dBi and the efficiency is 80%.
My question is that is there any methods to improve above performance except using low loss tangent substrate to replace FR4. thanks!