Vehicular antenna device
US6870509B2 · kind B2 · utility
7Cited by
10References
20Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Feb 10, 2003 |
| Grant date | Mar 22, 2005 |
| Priority date | — |
| Expiry date | Feb 10, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q1/3283
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A plurality of glass antennas formed as patterns on quarter glass panes are provided in opposite sides of a rearward portion of a vehicle body. Branching filters connected to feeding points of the glass antennas via coaxial cables, phase-shift circuits for phase adjustment of the FM band outputs separated by the branching filters, and combining circuits for combining the FM band outputs that have been phase-adjusted by the phase-shift circuits are contained in a shield case that is grounded to the vehicle body. The outer conductors of the coaxial cables at the branching filter side are grounded to the shield case therein.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.