Channelized apparatus for equalizing carrier powers of multicarrier signal
US5745846A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 7, 1995 |
| Grant date | Apr 28, 1998 |
| Priority date | — |
| Expiry date | Aug 7, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03G3/3042
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Disclosed is a channelized multi-carrier signal processor capable of equalizing power levels of individual carriers of a multi-carrier signal to within a predetermined dynamic range. In one embodiment, the signal processor includes a power splitter for splitting a multi-carrier input signal into a plurality of electrical paths. In each electrical path there resides a signal modifier that is operable to isolate signal energy associated with a given carrier of the multi-carrier signal. Each signal modifier includes an automatic gain control (AGC) circuit to control the power level of the carrier isolated therein to within a predetermined power level window so that the isolated carriers of each signal modifier are equalized in power. A power combiner then combines the equalized carriers to produce a multi-carrier output signal, which can be applied to a limited dynamic range device such as an A/D converter. Preferably, the carriers are isolated with the use of a tunable frequency synthesizer and a down-converting mixer within each signal modifier. This arrangement provides flexibility as to the frequencies which can be used for the modulated carriers of the multi-carrier input signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.