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Showing 1 to 6 of 6 for “"Load-modulation"”.
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Investigation and Design of New, Efficient and Compact Load Modulation Amplifiers for 5G Base Stations. Design, Simulation, Implementation and Measurements of Radio Frequency Power Amplifiers Using Active Load Modulation Technique for More Compact and Efficient 5G Base Stations Amplifiers
… be sent with the allocated bandwidth, so complex modulation schemes are used to utilise the available bandwidth efficiently. Nevertheless, the modulated signal will have a Peak to Average Power Ratio (PAPR) which increases as the modulation complexity is increasing. In this case, the power …
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Class-E Power Amplifiers in Modern RF Transmitters
… outphasing amplifiers, supply voltage modulation techniques are widely used. The goal of this work is to develop novel techniques for building load modulation transmitters based on class-E power amplifiers. The first contribution is an analytical model for derivation load network …
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Techniques for efficient radio frequency power conversion
… to efficiently deliver power into a varying load. While some of these existing and emerging applications are characterized with narrowband or single-frequency operation, others require operation over a range of frequencies. In such applications, the system architecture typically comprises an …
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Novel techniques for improved indoor positioning and localization using HF RFID
… multiple tags are detected using the method of load modulation of the tags. When multiple tags present within the RRA of the bridge loop antenna, the resulting bridge signals incorporate information from all of the detected tags thus making it difficult to locate individual tags. To overcome …
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Impedance spectroscopy techniques for condition monitoring of polymer electrolyte membrane fuel cells
… both techniques in practice, a low-cost active load is designed and built. The active load enables the injection of an arbitrary signal using the load modulation technique. The device is tested and benchmarked against commercial frequency response analyzer (FRA) using the conventional single …
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RFID anti-collision technique: coherent collision
RFID technology has enabled great advances in the asset tracking industry. Shipping, warehouse inventory, and storefront security are just a few examples where the application of RFID systems has increased efficiency and lowered cost. A major area of research at the present time is concerned with …