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An inductance-based control strategy, for further optimize parameter design which is conducted through inductance adaptive variation on LLC resonant converter, is proposed. A simple switch concept is applied to set the desired magnetizing inductance, the main control factor, to achieve light load efficiency improving and overall required switching frequency range narrowing. Evaluation for showing...
A methodology, utilizing loop gain of circuitry to extract the main features for providing the useful indexes being able to come out the evaluation of light-load operation efficiency for power supply design, is proposed herein. A DC-to-DC converter scheme for adaptor application is adopted for demonstrating the relation between switching device conduction duty cycle ratio, loop gain, and efficiency...
In an orthogonal frequency division multiplexing (OFDM) system, part of bandwidth is occupied by pilot symbols for time-varying channel estimation. In order to reduce the period of the training sequence while improving bandwidth efficiency, we study new time-domain channel tracking algorithms with a modified decision feedback loop. In company with the channel tracking algorithms, some decision error...
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