Antenna for a parking meter
US6373442B1 · kind B1 · utility
66Cited by
15References
15Claims
0Family size
Inventors
Key dates
| Filing date | Aug 20, 1999 |
| Grant date | Apr 16, 2002 |
| Priority date | — |
| Expiry date | Aug 20, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q13/10
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A slot antenna is used to transmit radio frequency (RF) signals from within the housing of an electronic parking meter. The antenna is formed on a circuit board from a layer of conductive material from which some material has been removed to form a slot. A signal feed element, such as a coaxial cable terminating at a coaxial connector, connects electrically to the layer of conductive material on one side of the slot. A conductive element extends from the signal feed element across the slot to connect to the layer of conductive material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.