Spiral coil loaded short wire antenna
US7639203B2 · kind B2 · utility
4Cited by
3References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 27, 2008 |
| Grant date | Dec 29, 2009 |
| Priority date | — |
| Expiry date | Jun 19, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q9/36
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A antenna (10) comprises a straight stem portion (11) and a spiral coiled portion (12) for providing the necessary length, but being compact enough for assembly in a pit tube (23) of a transmitter assembly (20) for subsurface enclosures for fluid meters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.