Extended cordless telephone system
US5115463A · kind A · utility
Inventors
Key dates
| Filing date | Jun 25, 1990 |
| Grant date | May 19, 1992 |
| Priority date | — |
| Expiry date | Jun 25, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W84/16
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An extended cordless telephone system for communicating information signals from a plurality of telephone lines through a telephone exchange, including a central station and a plurality of remote units. The plurality of remote units may be radio telephone handsets, data sets, and the like. The central station includes a plurality of transceivers, a power combiner, a duplexer, a power divider, and a plurality of radiax cables. The plurality of transceivers transmits and receives the information signals as ACSB signals. Alternatively, the plurality of transceivers may transmit and receive the information signals as spread spectrum signals, using frequency hopping and FSK modulation. The power combiners include a plurality of combiner striplines for impedence matching the plurality of transceivers to an output of the power combiner.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.