| Structure on IE3D | 
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Parameters: | Substrate thickness = 0.21844 mm, permittivity = 2.33. Conductor thickness = 0.005 mm, conductivity = 4.9 ´ 107 s/m.
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Simulation Results: | Measured and other calculated results are from J. T. Aberle, D. M. Pozar, and C. R. Birtcher, " Evaluation of input impedance and radar cross
section of probe-fed microstrip patch element using an accurate feed model," IEEE Trans. Antennas Propagat., Vol. AP-39, Dec. 1991, pp. 1691-1696.
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Information on IE3D
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Simulation Cases | IE3D(1) | IE3D(2) | IE3D(3) | IE3D(4) | Option | Flat Probe Pentium 133 | Tube Probe Pentium 133 | Flat Probe Pentium Pro 200 | Tube Probe Pentium Pro 200 | Geometry File | pfed1.geo | pfed2.geo | pfed1.geo | pfed2.geo | Cells/Unknowns | 189/275 | 243/395 | 189/275 | 243/395 | Time (sec/freq) | 24 | 93 | 12 | 49 |
IE3D Result Calculated and Measured Results from Literature
Vector Current Distribution, Circular Polarization Patterns and Axial Ratio Display of the Antenna
0 degree 90 degrees IE3D allows you to display the current distribution, radiation pattern and axial ratio with different excitations and loads. For this example, we feed
the port 2 with a 90· phase difference from port 1. Shown above is the current distribution at a time difference of 90·. The rotation of vectors is an indication of circular polarization.
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| Effect of Finite Ground Planes | The square finite ground plane is 50 mm long, compared to the 40 mm
diameter of the circular patch. Little difference is observed between the infinite
ground plane and finite ground plane structures in the frequency response. The
forward radiation patterns for the two antennas are also very close. The directivity
and efficiency of the antennas are significantly different.
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Information on IE3D
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Simulation Cases | IE3D(1) | IE3D(2) | Platform | Pentium 133 | Pentium Pro 200 | Geometry File | pfed3.geo | pfed3.geo | Cells/Unknowns | 436/739 | 436/739 | Time (sec/freq) | 409 | 161 |
Radiation Pattern with Infinite Ground Plane Radiation Pattern with Finite Ground Plane (Directivity = 8.25 dB, Efficiency = 72%) (Directivity = 7.23 dB, Efficiency = 89%)
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