Dual-band directional/omnidirectional antenna
US6839038B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 17, 2002 |
| Grant date | Jan 4, 2005 |
| Priority date | — |
| Expiry date | Jun 17, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q5/49
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An antenna having a dual-band driven element and a second antenna element simultaneously produces a directional radiation pattern at an upper frequency and an omnidirectional radiation pattern at a lower frequency. The dual-band driven element is formed as a dipole or monopole with at least one choke connected to the end of the dipole or monopole. In an exemplary embodiment, the dual-band driven element includes a central dipole or monopole that has chokes formed as u-shaped extensions located at the ends of the central antenna dipole or monopole. An antenna array includes the dual-band driven element and a second driven antenna element with a reflector and/or a director in a Yagi-Uda configuration. An antenna array includes the dual-band driven element with a reflector or with a reflector and a director in a Yagi-Uda configuration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.