Abstract
The physical optics (PO) method has been widely used for the analysis of the electromagnetic behavior of single and dual reflector antennas. An extensive work has been done by the authors of this paper in order to increase the speed for obtaining far field patterns from single and dual geometries and also in order to increase the accuracy of the method. This paper reviews these contributions and improves the existing published work with the physical interpretation of the radiation from a single patch and the computer implications when using acceleration techniques such as OpenMP.
Highlights
In engineering electromagnetic reflector antennas are commonly used for long-range radio communications, in applications such as satellite communications, radiolinks, and space exploration
The electromagnetic scattering by metallic surfaces has been extensively treated in the literature with special emphasis on the reflector antenna application case
Using the same approximation of the magnetic field integral equation (MFIE) as with single reflector antennas and assuming that the incident field only exists on the subreflector, the process can be reduced to invert a small matrix, which is possible to perform in modern computers
Summary
In engineering electromagnetic reflector antennas are commonly used for long-range radio communications, in applications such as satellite communications, radiolinks, and space exploration. Other very popular physical approximations are based on geometrical optics with aperture integration (GO + AI) and physical optics (PO) These techniques are compared in [5] for offset parabolic antenna. Using the same approximation of the MFIE as with single reflector antennas and assuming that the incident field only exists on the subreflector, the process can be reduced to invert a small matrix, which is possible to perform in modern computers. This method was introduced in [10] and improved in [11,12,13]. The final version is downloadable from the web for free since 2006 (http://www.com.uvigo.es)
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