Antenna device with lens or passive element acting as lens
US8314742B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 21, 2009 |
| Grant date | Nov 20, 2012 |
| Priority date | — |
| Expiry date | Apr 2, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q25/008
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An antenna device has a divider producing first and second signals, and amplifiers amplifying the signals at a changeable amplitude ratio of the first signal to the second signal. A Rotman lens gives first phase differences to first high frequency waves, produced from the first amplified signal at an input port and transmitted to output ports, and gives second phase differences to second high frequency waves produced from the second amplified signal at another input port and transmitted to the output ports. An antenna forms a beam composed of electromagnetic waves, having the first phase differences and electric power corresponding to the first amplified signal on an antenna surface, and electromagnetic waves, having the second phase differences and electric power corresponding to the second amplified signal on the antenna surface, and radiates the beam in a particular direction corresponding to the phase differences and the amplitude ratio.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.