Switching amplifier
AssigneeSharp Kabushiki Kaisha
InventorMasahiro Kishida
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Abstract
A switching amplifier of the present invention includes a delta-sigma modulation circuit for processing an input signal by delta-sigma modulation to output a one-bit signal, a delay circuit for delaying the one-bit signal, and a pulse amplifier having a switching device that switches the switching device according to the signal outputted from the delay circuit to perform pulse amplification of the signal outputted from the delay section. The delay time of the delay circuit is variable. With this configuration, enhanced performance is obtained without changing the sampling frequency of the delta-sigma modulation circuit.
Claims6
A switching amplifier comprising:
- a delta-sigma modulation circuit for processing an input signal by delta-sigma modulation to output a quantized signal;
- a delay section for delaying the quantized signal;
- and
- a pulse amplifier that includes a switching device and that, according to a signal outputted from the delay section, switches the switching device to perform pulse amplification of the signal outputted from the delay section,
- wherein a delay time of the delay section is variable.
Dependencies are inferred from the claim text.