Very wideband optical signal receiver
US4723313A · kind A · utility
5Cited by
2References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 24, 1986 |
| Grant date | Feb 2, 1988 |
| Priority date | — |
| Expiry date | Apr 24, 2006 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/6932
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An optical signal receiver for operating over a very wide frequency passband having 3dB points at a few kHz and at 1 GHz or beyond, comprises an input stage (Q1, Q2), an amplifier (Q3 to Q6), an output stage (Q7), and a negative feedback resistance (R26) of one to several kilohms. In order to obtain high amplifier gain, the load resistance (R8) of the input stage is increased to the point where it sets up, together with the input capacitance, a lowpass filter pole within the receiver passband, said pole being compensated immediately thereafter by a link (10, C6) between the first and second stages (Q3 and Q4) of said amplifier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.