Flat radar antenna employing circular array of slotted waveguides
US4121220A · kind A · utility
14Cited by
3References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 2, 1977 |
| Grant date | Oct 17, 1978 |
| Priority date | — |
| Expiry date | Feb 2, 1997 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q3/22
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A flat radar antenna comprises a generally circular array of juxtaposed radiators constituted by slotted waveguides, the array being divided into four quadrants each composed of a multiplicity of groups of radiators. The radiator groups of the entire array are connected to a high-frequency transceiver via parallel paths of identical electrical length, consituted in one embodiment by cascaded couplers of magic-T type, whereby the bandwidth of the antenna equals that of each group so as to facilitate frequency scanning.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.