Antenna device and method for transmitting and receiving radio waves
US6980782B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 15, 2000 |
| Grant date | Dec 27, 2005 |
| Priority date | — |
| Expiry date | May 20, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q1/36
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An antenna device for transmitting and receiving radio frequency waves, installable in a communication device includes an antenna structure switchable between antenna configuration states. Each state is distinguished by a set of radiation parameters, such as resonance frequency, input impedance, bandwidth, radiation pattern, gain, polarization, and near-field pattern. A switching device selectively switches the structure between the states. The antenna device includes a first receiver which receives a first measured operation parameter indicative of quality of transmission of radio frequency waves by the antenna structure, and a second receiver which receives a second measured operation parameter indicative of quality of reception of radio frequency waves by the structure. The antenna device includes a controller which controls the switching device, and selective switching of the antenna structure between the states, based on the first and second measured operation parameters, to improved transmission and/or reception quality.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.