Rear glass
US11695194B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 14, 2019 |
| Grant date | Jul 4, 2023 |
| Priority date | — |
| Expiry date | Mar 14, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B3/84
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A rear glass according to the invention is for attachment to a lift-up backdoor that closes an opening in a rear portion of a vehicle, and includes a glass plate, a defogger disposed in a vicinity of a center of the glass plate in an up-down direction, and a shared antenna installed on the glass plate upward or downward of the defogger, the shared antenna including a power supply unit, an AM antenna connected to the power supply unit, and an FM antenna connected to the power supply unit, and a relationship between an element length LAM of the AM antenna, a center wavelength λFM-C corresponding to a reception frequency band of the FM antenna and a wavelength shortening coefficient α of the glass plate satisfying 0.49×α×λFM-C≤LAM≤0.67×α×λFM-C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.