CPW-fed circularly polarized applique antennas for GPS and SDARS bands
US10490877B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 1, 2017 |
| Grant date | Nov 26, 2019 |
| Priority date | — |
| Expiry date | Jul 7, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q13/28
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A thin film, flexible antenna that has particular application to be adhered to vehicle glass, where the antenna is operable to receive right-hand or left-hand circularly polarized signals from, for example, GPS and SDARS satellites. The antenna is a printed planar antenna formed to the substrate and includes a ground plane having an outer perimeter portion defining a slot therein and having a plurality of sides. A T-line tuning stub extends from one of the sides into the slot, a curved spur-line tuning stub extends from a corner where two sides of the perimeter portion meet and extends into the slot, and a radiating element electrically isolated from the perimeter portion extends into the slot. The perimeter portion is operable to generate circularly polarized signals to be received by the radiating element where the tuning stubs provide phase tuning of the circularly polarized signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.