Glass antenna for vehicle
US9843094B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 22, 2012 |
| Grant date | Dec 12, 2017 |
| Priority date | — |
| Expiry date | Oct 30, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q5/378
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A glass antenna provided on vehicle side glass has a power feeding portion disposed at side portion of the side glass, a main element connected to the power feeding portion and a square bracket-shaped element whose one end is connected to some midpoint of the main element. When frequency band of FM broadcast wave received by the antenna is divided into two frequency bands with respect to its center frequency, wavelength of center frequency of frequency band of low frequency is λ, and wavelength of center frequency of frequency band of high frequency. Also wavelength shortening coefficient of the side glass is α. In this condition, either one of length of the main element or length from the power feeding portion up to an opening end of the square bracket-shaped element is set to α·λ·¾, and the other is set to α·λ′·¾.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.