Antenna selection control circuit
US4977616A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 26, 1989 |
| Grant date | Dec 11, 1990 |
| Priority date | — |
| Expiry date | Oct 26, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B7/0811
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An antenna switch control circuit for use in achieving antenna selection diversity in TDM RF receivers. RSSI for at least one antenna is monitored during time slots containing information not of interest. This information can then be compared with other antenna performance information to allow a selection to be made such that the receiver generally operates with the antenna receiving the strongest signal. In one embodiment, all possible antennas are monitored during a time slot containing information not of interest. In another embodiment, RSSI for the selected antenna can be monitored during the time slot of interest, such that antenna selection can again be varied should the selected antenna diminish in performance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.