Communication apparatus
US8035561B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | May 29, 2009 |
| Grant date | Oct 11, 2011 |
| Priority date | — |
| Expiry date | Jan 4, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q25/001
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A communication apparatus communicating other apparatuses includes: a switch for switching between a vertical polarized antenna and a horizontal polarized antenna; a communication device for transmitting and receiving the electric wave via one of the antennas, which is selected by the switch; a monitor for monitoring a relative distance between the apparatus and other apparatuses; and a controller for controlling the switch such that the switch selects the vertical polarized antenna when the relative distance is equal to or larger than a distance threshold, and the switch selects the horizontal polarized antenna when the relative distance is smaller than the distance threshold. The distance threshold is larger than a distance between the apparatus and a dip point.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.