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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Duan, D.-W. Mahon, J.P. Rahmat-Samii, Y. |
| Copyright Year | 1990 |
| Description | Author affiliation: Dept. of Electr. Eng., California Univ., Los Angeles, CA, USA (Duan, D.-W.; Mahon, J.P.; Rahmat-Samii, Y.) |
| Abstract | Two groups of techniques based on the geometric theory of diffraction (GTD) and the physical theory of diffraction (PTD) are studied by using a canonical problem consisting of a conducting circular disc and an infinitesimal dipole feed. The GTD group includes the GTD, the uniform geometrical theory of diffraction, and the uniform asymptotic theory. The PTD group includes Mitzner's incremental length diffraction coefficients, Michaeli's equivalent edge currents, and Ando's modified physical theory of diffraction, which are modifications of Ufimstev's PTD. These solutions are compared with those obtained by the physical optics and the method of moments. Features of the far-field radiation patterns that are of particular interest include the performances at reflection boundaries, boresight caustics, and near theta =90 degrees as well as the prediction of cross-polarized fields, sidelobe levels, and nulls. Although only far-field radiation is considered, these methods can also be used for near-field calculations. The bistatic radar cross section calculated by these techniques is also examined.< |
| Sponsorship | IEEE |
| Starting Page | 1578 |
| Ending Page | 1581 |
| File Size | 137465 |
| Page Count | 4 |
| File Format | |
| DOI | 10.1109/APS.1990.115419 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 1990-05-07 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Message-oriented middleware Physical theory of diffraction Optical diffraction Optical reflection Frequency Feeds Physical optics Moment methods Near-field radiation pattern Microwave theory and techniques |
| Content Type | Text |
| Resource Type | Article |
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