Radio transceiver having switchable antennas
US5991643A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 12, 1998 |
| Grant date | Nov 23, 1999 |
| Priority date | — |
| Expiry date | Jan 12, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B7/0805
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The present invention relates to a radio transceiver having a plurality of switchable antennas. The radio transceiver comprises (1) a housing, (2) a dipole antenna installed on the housing for transmitting and receiving radio signals, (3) at least one patch antenna installed on the housing for transmitting and receiving radio signals, each patch antenna being connected to an antenna switch, (4) an impedance matching circuit connected to the dipole antenna and each said antenna switch, (5) a transceiver circuit connected to the impedance matching circuit for converting radio signals received by the antennas into base band signals and converting base band signals to be transmitted into radio signals, (6) and mode control means for controlling each said antenna switch and the impedance matching circuit to match the impedance of the impedance matching circuit with the connected antennas.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.