Raúl Guzmán-Quirós

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This contribution describes how leaky waves can be malleably modulated in substrate integrated waveguide (SIW) antennas. It is the first time that such flexible and unconventional tapering of the leaky modes is demonstrated in a practical leaky-wave antenna (LWA) structure. The synthesis theory is based on the dispersion engineering of the radiative leaky(More)
In this paper, the integration of directional antennas in a room-level received signal strength (RSS) fingerprinting-based indoor localization system (ILS) is studied. The sensor reader (SR), which is in charge of capturing the RSS to infer the tag position, can be attached to an omnidirectional or directional antenna. Unlike commonly-employed(More)
Active RFID systems can be used as the foundations to deploy Indoor Real Time Location Systems (RTLS) and value-added context-aware and ambient intelligence services. In this work the feasibility of applying Clustering techniques and neural networks within an Active RFID system to develop an indoor location service is explained and evaluated. In previous(More)
A wireless power transfer system is conceived to empower light drones and unmanned aerial vehicles. To satisfy the power budget of the wireless link and provide enough power to the drone, new circuits based on directive frequency-scanned leaky-wave antennas and circuits are proposed. It is shown how the proposed leaky-wave devices introduce enough gain in(More)
The systematic design of broadband, directive, scanned planar leaky-wave antennas using coupled-cavity substrate integrated waveguide technology is reported in this work. The design methodology is based on the optimization of the corresponding transverse resonance phase equation, so that a constant scanning angle condition is satisfied for a wide frequency(More)
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