Matt_V
Newbie level 1
I've recently designed some antennas in CST Microstripes and have built and measured prototypes of these antennas.
In every instance, the prototype antennas have produced a decrease in resonant frequency and an increase in return loss in comparison to the simulations. This implies that for some reason the prototype antennas have a greater total inductance than the simulation models.
My theory is that a possible cause of the increased inductance is that the 'fringing effect' in the prototypes is more than was accounted for in CST, as this would cause the increased inductance.
Is this likely to be the case, with CST not fully accounting for all fringing or is there another explanation for what I have observed?
Many Thanks
In every instance, the prototype antennas have produced a decrease in resonant frequency and an increase in return loss in comparison to the simulations. This implies that for some reason the prototype antennas have a greater total inductance than the simulation models.
My theory is that a possible cause of the increased inductance is that the 'fringing effect' in the prototypes is more than was accounted for in CST, as this would cause the increased inductance.
Is this likely to be the case, with CST not fully accounting for all fringing or is there another explanation for what I have observed?
Many Thanks