Universal optical signal receiver
US5745276A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 27, 1995 |
| Grant date | Apr 28, 1998 |
| Priority date | — |
| Expiry date | Apr 27, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/6931
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An optical receiver communication system converts optical signals modulated by analog or digital waveforms to RF signals. The optical receiver contains an automatic level control circuit to adjust the electronic gain of the system accordingly across a broad bandwidth spectrum. Two impedance matching circuit are designed using broad band matching technique to expand the bandwidth for increasing the maximum receivable frequency to 1 GHz. A RLC impedance matching circuit forms a resonant combination to maintain .+-.1 dB fluctuation between the low-and high-frequency limits of the bandwidth, and a 75 .OMEGA. impedance matching circuit creates a 180.degree. phase shift between the outgoing and the incoming signal for low return loss.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.