FI920379A - Sigma-delta modulator - Google Patents
Sigma-delta modulator Download PDFInfo
- Publication number
- FI920379A FI920379A FI920379A FI920379A FI920379A FI 920379 A FI920379 A FI 920379A FI 920379 A FI920379 A FI 920379A FI 920379 A FI920379 A FI 920379A FI 920379 A FI920379 A FI 920379A
- Authority
- FI
- Finland
- Prior art keywords
- modulator
- quantizing
- error
- sigma
- signal
- Prior art date
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- Compression, Expansion, Code Conversion, And Decoders (AREA)
Abstract
The invention concerns a sigma-delta modulator system with two cascade-connected modulators. The quantizing error of the first modulator and an error signal e representing integrated signal estimate error are taken to the second modulator for quantizing, the quantized error signal is derived and subtracted suitably from the delayed output signal of the first modulator. To reduce the noise the quantizing in the second modulator is a negative reconnection of the output power from at least one integration stage 42 to the input of a preceding integration stage 41, and the reconnection loop has at least one delay. <IMAGE>
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI920379A FI92533C (en) | 1992-01-28 | 1992-01-28 | Sigma-delta modulator |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI920379 | 1992-01-28 | ||
FI920379A FI92533C (en) | 1992-01-28 | 1992-01-28 | Sigma-delta modulator |
Publications (4)
Publication Number | Publication Date |
---|---|
FI920379A0 FI920379A0 (en) | 1992-01-28 |
FI920379A true FI920379A (en) | 1993-07-29 |
FI92533B FI92533B (en) | 1994-08-15 |
FI92533C FI92533C (en) | 1994-11-25 |
Family
ID=8534276
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FI920379A FI92533C (en) | 1992-01-28 | 1992-01-28 | Sigma-delta modulator |
Country Status (1)
Country | Link |
---|---|
FI (1) | FI92533C (en) |
-
1992
- 1992-01-28 FI FI920379A patent/FI92533C/en active
Also Published As
Publication number | Publication date |
---|---|
FI92533C (en) | 1994-11-25 |
FI92533B (en) | 1994-08-15 |
FI920379A0 (en) | 1992-01-28 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
BB | Publication of examined application |