Monolithic payload IF switch
US6891424B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 29, 1999 |
| Grant date | May 10, 2005 |
| Priority date | — |
| Expiry date | Sep 29, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04Q2213/13322
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A crosspoint switch architecture (10). The inventive architecture (10) includes a monolithic substrate (11) on which a plurality (N) of electrical inputs are provided. In addition, a plurality (M) of electrical outputs are provided on the substrate (11). A switch is disposed on the substrate (11) for selectively interconnecting the inputs to the outputs and a control circuit (16) is disposed on the substrate (11) for controlling the switch. The switch comprises M, N to 1, multiplexers (14), each multiplexer (14) being adapted to receive each of the N electrical inputs. In the illustrative embodiment, each of the N inputs to each of the multiplexers is received through a respective one of N switchable amplifiers (18). The output of each amplifier (18) is provided to a respective one of N switchable isolation buffers (19). The outputs of the buffers (19) are summed and buffered to provide the output of each multiplexer (14). The control circuit (16) selects which input is to be passed through to the output of a given multiplexer (14). In the illustrative embodiment, the control circuit (16) includes a serial in, parallel out shift register and decode logic circuitry.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.