characteristics are dielectric constant εr=2.17, thickness
h=0.787mm and a loss tangent of tan δ=0.0009.
Fig. 3 Manufactured prototype antenna array
The manufactured prototype presented in the Fig. 3 was
tested for return loss, polarization and radiation pattern.
Fig. 4 Measured and simulated return loss (S11)
Concerning to the return loss, Fig. 4 shows a good
agreement between simulation and the measurements.
Considering a good matching for a S11 level below -10dB, the
antenna has a bandwidth of 260MHz.
Fig. 5 Measured and simulated axial ratio
As can be seen in the Fig. 5 the measured bandwidth is
narrower than simulated. Assuming an axial ratio below 3dB as