Planar Inverted-F-Antenna (PIFA) having a slotted radiating element providing global cellular and GPS-bluetooth frequency response
US6741214B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 6, 2002 |
| Grant date | May 25, 2004 |
| Priority date | — |
| Expiry date | Nov 13, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q9/0421
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Single feed planar inverted-F antennas (PIFAs) are provided for three, four or five frequency bands of resonance in both cellular and non-cellular frequency bands. The PIFAs include a dielectric carriage having a metal radiating element located on a top surface thereof and sidewalls having a metal ground plane element located at the bottom of the sidewalls. The non-radiating edge of the radiating elements include a downward extending shorting strip that is connected to the ground plane element and a downward extending feed strip that is spaced above the ground plane element and is connected to a feed cable. The radiating element includes downward extending matching and loading plates whose free ends are spaced above the ground plane element, which provide impedance matching and reactive loading to the radiating elements. Configurations of slots (open and closed) within the radiating elements selectively provide multiple frequency resonance to the radiating elements in both cellular and non-cellular frequency bands.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.