Radio antennae structures employing helical conductors
US4309707A · kind A · utility
13Cited by
2References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 29, 1980 |
| Grant date | Jan 5, 1982 |
| Priority date | — |
| Expiry date | Apr 29, 2000 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q5/371
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The invention relates to compact radio antennae structures having wide bandwidth characteristics, the antennae structure including a plurality of end-fed antennae, and a terminal connected to end feed the antennae, wherein each of the antennae comprise a pair of extended conductors disposed in helical insulated windings of the same diameter and opposite chirality, the windings being coaxially, longitudinally coextensive and connected together at one end to form said end-feed, and wherein the antennae are each of different electrical lengths.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.