Dielectrically-loaded antenna
US7675477B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 20, 2007 |
| Grant date | Mar 9, 2010 |
| Priority date | — |
| Expiry date | Apr 9, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q11/08
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A dielectrically-loaded helical antenna has a cylindrical ceramic core bearing metallised helical antenna elements which are coupled to a coaxial feeder structure passing axially through the core. Secured to an end face of the core is a circular laminate board having feed-through holes for receiving the end portions of feeder structure conductors. Coupling conductors on the face of the board that faces the core extend radially outwardly from connections with the feeder structure conductors to plated edge portions of the board. The board is of a diameter substantially equal to that of the core and bridging conductors overlying the plated edge portions connect the coupling conductors to the helical elements. The board incorporates a matching network.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.