Broadband omnidirectional array antenna system
US7170463B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | May 31, 2005 |
| Grant date | Jan 30, 2007 |
| Priority date | — |
| Expiry date | May 31, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q21/10
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Broadband omnidirectional, vertically polarized communications antenna systems are disclosed. The antenna systems comprises a plurality of center-fed stacked dipole radiating elements disposed along a central axis, a coaxial feed line coupled between each of the stacked radiating elements. In certain embodiments, a two-wire balun is coupled to a feed point of each radiating element and a shunt inductor and capacitor are coupled to each radiating element. Other embodiments do not require the use of the balun. Certain embodiments use a printed-circuit dipole having a flat shape. Other embodiments use a metal dipole having a cylindrical shape. The array antenna systems may be stacked vertically in separate bays each with its independent RF port.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.