Apparatus for amplifying an input-signal
AssigneeFraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
InventorsHung-Anh Nguyen, Wilhelm Keusgen, Andreas Kortke
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Abstract
Embodiments of the present invention provide an apparatus for amplifying an input-signal. The apparatus includes a switch-mode amplifier for amplifying a digital input-signal. The apparatus is characterized by a generator for generating the digital input-signal based on the input-signal, wherein the generator is configured to generate the digital input-signal such that the digital input-signal is located at a predefined frequency band and such that distortions are located at a frequency higher than the predefined frequency band.
Claims15
Apparatus for amplifying an input-signal, the apparatus comprising:
- a switch-mode amplifier for amplifying a binary input-signal;
- a generator for generating the binary input-signal based on the input-signal;
- wherein the generator comprises a signal shaper configured to generate a binary continuous-time signal on the basis of the input-signal and a carrier signal, and to logically combine the binary continuous-time signal and a rectangular wave signal thereby generating the binary input-signal at a predefined frequency band, wherein distortions effected during generating the binary input-signal have a lowest frequency which is higher than the predefined frequency band.
Method for amplifying an input-signal, the method comprising:
- amplifying a binary input-signal with a switch-mode amplifier;
- wherein the binary input-signal is generated based on the input-signal;
- wherein generating the binary input-signal comprises generating a binary continuous-time signal on the basis of the input-signal and a carrier signal, and to logically combine the binary continuous-time signal and a rectangular wave signal thereby generating the binary input-signal at a predefined frequency band, wherein distortions effected during generating the binary input-signal have a lowest frequency which is higher than the predefined frequency band.
Dependencies are inferred from the claim text.