Title:
DEVICE FOR AMPLIFYING DIGITAL SIGNALS
Document Type and Number:
WIPO Patent Application WO1999008378
Kind Code:
A3
Abstract:
The device for amplifying digital signals comprises an input electrode (10) for receiving a digital signal. The device further includes a subtraction unit (12) for subtracting at least two signals from each other, and the input electrode (10) is coupled to a first input (11) of the subtraction unit (12). The device also comprises a time-continuous loop filter (14) coupled to an output of the subtraction unit (12), and a time-continuous comparator (16) and a switching amplifier (18) which are coupled in cascade to said time-continuous loop filter. The device additionally includes an output electrode (20) which is coupled to an output (22) of the switching amplifier (18). This output (22) of the switching amplifier (18) is also coupled to a second input (13) of the subtraction unit (12).
Inventors:
VAN DEN HOMBERG JOHANNES ALDEG
PHILIPS KATHLEEN JEANNE PETRUS
PHILIPS KATHLEEN JEANNE PETRUS
Application Number:
PCT/IB1998/001080
Publication Date:
April 29, 1999
Filing Date:
July 16, 1998
Export Citation:
Assignee:
KONINKL PHILIPS ELECTRONICS NV (NL)
PHILIPS SVENSKA AB (SE)
PHILIPS SVENSKA AB (SE)
International Classes:
H03M3/02; H03F3/217; H03F3/68; (IPC1-7): H03F3/217; H03M1/00
Domestic Patent References:
| WO1992011699A1 | 1992-07-09 |
Foreign References:
| DE19619208A1 | 1997-11-13 | |||
| DE3934215A1 | 1991-04-18 | |||
| US4059807A | 1977-11-22 | |||
| US4134076A | 1979-01-09 |
Other References:
See also references of EP 0932932A1
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