Multiband whip antenna
US8816925B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 22, 2010 |
| Grant date | Aug 26, 2014 |
| Priority date | — |
| Expiry date | Jun 25, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q5/314
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A multi-band whip antenna having a 30 MHz to 2 GHz bandwidth and an L-band dipole has its coverage extended up to 6 GHz by eliminating nulls and reducing VSWR problems that are cured through the utilization of a sleeve over the feedpoint of the L-band antenna. Chokes in the form of sleeves are provided at either end of the L-band dipole to shorten the L-band antenna for preventing reverse polarity currents at the L-band antenna feedpoint, with the antenna further including the use of double shielded meanderlines to provide improved performance between 410-512 MHz and in which a capacitance sleeve is added at the bottom of the L-band antenna to effectively elongate the antenna below the L-band to permit operation below 700 MHz.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.