Antenna device and method for manufacturing same
US10211542B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 20, 2015 |
| Grant date | Feb 19, 2019 |
| Priority date | — |
| Expiry date | May 4, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q21/30
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Provided is an antenna device having a structure that suppresses deterioration in performance as a profile becomes lower. Four FM band antenna elements and two AM band antenna elements are arranged side by side on an antenna base. Further, a circuit board including synthesis circuits in one-to-one correspondence with the antenna elements, respectively, is arranged in an inner space of the antenna elements. In order that omnidirectionality may be exhibited in a horizontal plane, each of the antenna elements includes a helically wound linear conductor, and a planar conductor that is electrically connected to the linear conductor at a part substantially the farthest from a ground plane (antenna base).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.