Transponder having directional antennas
US6313783A · kind A · utility
52Cited by
25References
31Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 6, 1999 |
| Grant date | Nov 6, 2001 |
| Priority date | — |
| Expiry date | Aug 6, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S13/782
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and apparatus for transmitting a directional reply signals in response to Air Traffic Control Radar Beacon System and Mode Select signals interrogation signals. Two directional antennas independently acquire an interrogation signal and are connected by means of a configurable switch to a transponder. The antennas may include multiple directional antenna elements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.