Frequency-scanned focused leaky-wave antennas for direction-of-arrival detection in proximity BLE sensing applications
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Knowledge AreaTeoría de la Señal y las Comunicaciones
SponsorsThis work has been supported by Spanish National project TEC2016-75934-C4-4-R.
Bibliographic CitationM. Poveda-Garcia, A. G. Martinez and J. L. Gomez-Tornero, "Frequency-Scanned Focused Leaky-Wave Antennas for Direction-of-Arrival Detection in Proximity BLE Sensing Applications," 2020 14th European Conference on Antennas and Propagation (EuCAP), 2020, pp. 1-4, doi: 10.23919/EuCAP48036.2020.9135538.
KeywordsBluetooth Low Energy
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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