| 摘要 |
The application refers to an apparatus comprising, a signal generator (102, 102a) configured to generate a signal, a first pulse width modulating unit (106) configured to modulate the signal, an amplifier unit (110) configured to amplify the modulated signal, a feedback loop path (108a) configured to correct the modulated signal using an error signal, wherein the apparatus comprises a second pulse width modulating (108) unit configured to modulate the error signal onto the modulated signal.
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