Electronically scanned space fed antenna system and method of operation thereof
US4489325A · kind A · utility
49Cited by
8References
5Claims
0Family size
Inventors
Key dates
| Filing date | Sep 2, 1983 |
| Grant date | Dec 18, 1984 |
| Priority date | — |
| Expiry date | Sep 2, 2003 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q21/0006
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An E-scan, space fed antenna is realized using non-active radiation and excitation arrays and a reduced number of phase and amplitude shifters. The linear radiation array is coupled to the concave excitation array by a parallel plate lens. An optimization technique allows the choice of a subset of the excitation array and the calculation of the optimum complex weight for each activated element of the excitation array. An antenna design allowing 80.degree. of scan and providing a maximum sidelobe level of better than -40 dB is disclosed which requires only 16 high resolution digital phase shifters and amplitude settings.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.