Frequency-scanned focused leaky-wave antennas for direction-of-arrival detection in proximity BLE sensing applications
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This work has been supported by Spanish National project TEC2016-75934-C4-4-R.Fecha de publicación
2020Editorial
IEEECita bibliográfica
POVEDA GARCÍA, Miguel; GIL MARTÍNEZ, Alejandro Rafael y GÓMEZ TORNERO, José Luis. Frequency-Scanned Focused Leaky-Wave Antennas for Direction-of-Arrival Detection in Proximity BLE Sensing Applications. En: 14th European Conference on Antennas and Propagation (EuCAP), 2020, pp. 1-4, doi: 10.23919/EuCAP48036.2020.9135538.Palabras clave
Bluetooth Low EnergyDirection-of-Arrival
Leaky-wave antennas
Near-field focusing
Proximity detection
Resumen
The synthesis of monopulse functions in the Fresnel region, using near-field focused leaky-wave antenas (LWA), is presented in this work. The focusing technique, combined with the frequency-scanning behavior of LWAs, allows for obtaining well-defined radiation patterns in the vicinity of the antenna, which properly overlap to obtain the scanning monopulse functions. This is not possible with conventional far-field focused antennas, in which the radiation pattern is very distorted in the near-field region. As a proof of concept, examples using the three advertising channels provided by the Bluetooth Low Energy (BLE) protocol are shown. These channels (#37, #38 and #39) are placed at 2.402, 2.426 and 2.48 GHz, respectively. The near-field monopulse synthesis is interesting for Direction-of-Arrival (DoA) detection in proximity sensing applications.
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