Column antenna apparatus and method for manufacturing the same
US7554509B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 25, 2006 |
| Grant date | Jun 30, 2009 |
| Priority date | — |
| Expiry date | Jul 8, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q5/357
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A column antenna apparatus and a manufacturing method thereof are disclosed. This invention forms a metal layer with at least two spiral structures on a column body. The column antenna apparatus can simplify the manufacturing process and enhance the yield rate. The column antenna apparatus includes a column body, a metal layer and at least two spiral structures. The metal layer is formed on the surface of the column body, and the at least two spiral structures are formed on the metal layer for increasing bandwidth of low frequency. Each spiral structure is formed by removing a part of the metal layer, and the column body is exposed via the at least two spiral structures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.