Abstract
A novel multilevel algorithm for computing the radiation patterns of nonplanar aperture antennas over a range of observation angles is presented. The proposed technique is directly applicable to reflector and lens antennas as well as to radomes. The multilevel computational sequence is based on a hierarchical decomposition of the radiating aperture and comprises two main steps. First, computation of the radiation patterns of all subapertures of the finest level over a very coarse angular grid. Second, multilevel aggregation of the radiation patterns of neighboring subapertures into the final pattern of the whole aperture via a phase compensated interpolation. The multilevel algorithm attains computational complexity comparable to that of the fast Fourier transform based techniques while avoiding their limitations.
| Original language | English |
|---|---|
| Pages (from-to) | 2064-2072 |
| Number of pages | 9 |
| Journal | IEEE Transactions on Antennas and Propagation |
| Volume | 53 |
| Issue number | 6 |
| DOIs | |
| State | Published - Jun 2005 |
Keywords
- Computation time
- Fast algorithms
- Lens antennas
- Multilevel algorithms
- Physical optics
- Radomes
- Reflector antennas