Amplifiers – Modulator-demodulator-type amplifier
Reexamination Certificate
2008-12-22
2010-12-14
Nguyen, Hieu P (Department: 2817)
Amplifiers
Modulator-demodulator-type amplifier
C330S20700P, C330S297000
Reexamination Certificate
active
07852150
ABSTRACT:
The invention relates to a switching amplifier comprising at least one pulse modulator arranged for modulating at least one input utility signal into at least one pulse modulated signal and at least one switching power stage arranged to establish at least one amplified utility signal on the basis of said at least one pulse modulated signal and a power signal, said power signal being delivered by a tracking power supply at least partly controlled by said at least one input utility signal, characterized in that said switching amplifier is arranged to process said at least one input utility signal according to a correction signal established by a correction signal estimator on the basis of a supply information signal derived from said tracking power supply.According to the present invention an advantageous switching amplifier enabling use of a tracking power supply is provided. Thereby the many benefits of switching amplifiers can now be obtained together with the benefits of utilizing a tracking power supply. Among many things, this reduces power consumption, reduces EMI noise and enables using more of the dynamic range available for the utility signal during the pulse modulation. The last advantage further renders noise introduced by the power supply and the switching output stage less significant, as the signal-to-noise ratio in the power stage is greatly improved due to the utilization of the full dynamic range enabled by using a tracking power supply.
REFERENCES:
patent: 6373340 (2002-04-01), Shashoua
patent: 7321262 (2008-01-01), Nielsen et al.
patent: 7518444 (2009-04-01), Andersen et al.
Cantor & Colburn LLP
Nguyen Hieu P
The TC Group A/S
LandOfFree
Switching amplifier driven by a controlled power supply does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Switching amplifier driven by a controlled power supply, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Switching amplifier driven by a controlled power supply will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4235157