Microstrip antenna array with periodic filters for enhanced performance
US6954177B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 7, 2002 |
| Grant date | Oct 11, 2005 |
| Priority date | — |
| Expiry date | Jan 4, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q21/0075
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An antenna unit formed in the shape of a hollow box comprising (a) a substrate forming the front side of the antenna unit, (b) a first microstrip antenna array formed on the substrate, (c) a second microstrip antenna array formed on the substrate, (d) a ground plane forming the rear side of the antenna unit, and (e) a plurality of periodic filters formed on the ground plane. The periodic filters are formed by etching a series of circular patterns, or holes, through the ground plane. The periodic stop band filters provide for improved isolation between the microstrip antenna arrays, without the need for adding additional costly or space consuming components.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.