DrunkBear
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attched is a very simple patch antenna model in CST.
Actually the model maybe incorrectly constructed because of at least three abnormal results.
1. the resonant frequency is not around 1GHz since the width is 30mm and the permitivity of the substrate is 25.
2. the rad.efficiency is only 5% and tot.efficiency is 0.002~~(i exported the simulation results in archive, so only 1D results are included)
3. the characteristic impedance of the coaxial line should have been 50ohm, but 42~~ohm in the 2-D result.
I really don't know what's wrong with my model.
BTW, is it normal that the meshcells are as high as about 234600?
Could someone kindly help take a look at the model and offer some comments?
Thank you!
Actually the model maybe incorrectly constructed because of at least three abnormal results.
1. the resonant frequency is not around 1GHz since the width is 30mm and the permitivity of the substrate is 25.
2. the rad.efficiency is only 5% and tot.efficiency is 0.002~~(i exported the simulation results in archive, so only 1D results are included)
3. the characteristic impedance of the coaxial line should have been 50ohm, but 42~~ohm in the 2-D result.
I really don't know what's wrong with my model.
BTW, is it normal that the meshcells are as high as about 234600?
Could someone kindly help take a look at the model and offer some comments?
Thank you!