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Study of high speed complex number algorithms. [for determining antenna for field radiation patterns
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Heisler, R. |
| Copyright Year | 1981 |
| Description | A method of evaluating the radiation integral on the curved surface of a reflecting antenna is presented. A three dimensional Fourier transform approach is used to generate a two dimensional radiation cross-section along a planer cut at any angle phi through the far field pattern. Salient to the method is an algorithm for evaluating a subset of the total three dimensional discrete Fourier transform results. The subset elements are selectively evaluated to yield data along a geometric plane of constant. The algorithm is extremely efficient so that computation of the induced surface currents via the physical optics approximation dominates the computer time required to compute a radiation pattern. Application to paraboloid reflectors with off-focus feeds in presented, but the method is easily extended to offset antenna systems and reflectors of arbitrary shapes. Numerical results were computed for both gain and phase and are compared with other published work. |
| File Size | 6159433 |
| Page Count | 45 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19820011040 |
| Archival Resource Key | ark:/13960/t6b32pn42 |
| Language | English |
| Publisher Date | 1981-01-01 |
| Access Restriction | Open |
| Subject Keyword | Computer Programming And Software Complex Numbers Fourier Transformation Algorithms Antenna Design Computation Far Fields Linear Arrays Parabolic Reflectors Antenna Radiation Patterns Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
