Phased array antenna for radio frequency identification
US6127981A · kind A · utility
29Cited by
13References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 23, 1997 |
| Grant date | Oct 3, 2000 |
| Priority date | — |
| Expiry date | Jul 23, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q21/0006
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A multi-element, H plane, phase, dipole array antenna has a high gain over a wide angle in azimuth and over a controlled sector in elevation. Two printed wiring boards feed and physically support the dipole antenna elements. The phase and spacing of the dipole elements establish the radiation elevation angle, and a planar metallic reflector, spaced on the order of a half wavelength of the RF signal from the dipole array, interacts with the dipole-element pattern, to provide the wide angle azimuth gain.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.