End-fed sleeve dipole antenna comprising a ¾-wave transformer
US8593363B2 · kind B2 · utility
6Cited by
29References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 27, 2011 |
| Grant date | Nov 26, 2013 |
| Priority date | — |
| Expiry date | Apr 11, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q9/22
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An end-fed sleeve dipole is provided herein with improved impedance match and increased bandwidth by incorporating a ¾-wavelength transformer in the antenna design. The ¾-wavelength transformer is compatible with a number of different choking schemes, including but not limited to, a single ¼-wave choke sleeve, a single ¼-wave choke sleeve with additional ferrite beads, and two or more ¼-wave choke sleeves with or without ferrite beads. In some embodiments, one or more shunt resonators may be used to provide additional impedance compensation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.