Microstrip antenna employing width discontinuities
US6839028B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 9, 2002 |
| Grant date | Jan 4, 2005 |
| Priority date | — |
| Expiry date | Aug 9, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q21/0006
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An apparatus and method to reduce the size of a microstrip antenna without sacrificing antenna efficiency too much are described. The antenna structure includes discontinuity of strip width in the middle of the antenna patch to reduce the size of the antenna at a given resonant frequency. The antenna structure further includes a plurality of patches of differing widths connected to each other at junctions. The junctions are placed symmetrically to ensure maximum radiation at the boresight and also to further reduce cross-polarization levels. A coaxial feed is connected at a predetermined location near the center of a patch, having a narrower width, in order to match the input impedance of the antenna to the coaxial feed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.