Scannable sparse antenna array
US7696945B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 27, 2003 |
| Grant date | Apr 13, 2010 |
| Priority date | — |
| Expiry date | Nov 27, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q13/22
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A sparse array antenna is disclosed. The antenna comprises series-fed antenna array columns tuned to a respective transmit and receive frequency. The transmitting and receiving radiation elements are formed with a given distance between each transmitting radiator element and each receiving radiator element, and the series-fed antenna columns are arranged in parallel, perpendicular to a symmetry line forming a symmetric interleaved transmit/receive array. Furthermore the receiving array columns operate as parasitic elements in a transmit mode and transmitting array columns operate as parasitic elements in a receive mode, thereby reducing creation of grating lobes. The created sparse array antenna may further be arranged to be scannable to also provide reduced sidelobes entering visual space when scanning the main radiation lobe from an off boresight direction. Typically the series-fed array columns may be formed as extended ridged slotted wave-guides tuned to a respective transmitting or receiving frequency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.