Antenna apparatus for bearing angle determination
US4209791A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 5, 1978 |
| Grant date | Jun 24, 1980 |
| Priority date | — |
| Expiry date | Oct 5, 1998 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q21/20
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Antenna apparatus for representing a bearing angle includes an antenna array of N antenna elements equispaced around the arc of a circle of at least 90.degree., and preferably greater than 180.degree. in a plane for receiving microwave energy, microwave power dividing and phase transforming matrix having N input ports respectively connected to the antenna elements and a set of output ports connected to a utilization device for indicating the bearing angle of the incoming microwave energy, and a utilization device including means for measuring the phase difference between signals at pairs of the output ports for representing the bearing angle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.