Dual-Beam Steerable TMAs Combining AM and PM Switched Time-Modulation
Use este enlace para citar
http://hdl.handle.net/2183/30819Colecciones
- GI-GTEC - Artigos [193]
Metadatos
Mostrar el registro completo del ítemTítulo
Dual-Beam Steerable TMAs Combining AM and PM Switched Time-ModulationFecha
2022Cita bibliográfica
Maneiro-Catoira, R.; Brégains, J.; García-Naya, J.A.; Castedo, L. Dual-Beam Steerable TMAs Combining AM and PM Switched Time-Modulation. Sensors 2022, 22, 1399. https://doi.org/ 10.3390/s22041399
Resumen
[Abstract] Wireless sensor networks (WSN) are increasingly requiring directional antennas that not only provide higher capacity, security, transmission range or robustness against interference, but also contribute with smart antenna capabilities such as adaptive beamforming or multi beam radiation patterns. Standard phased arrays provide these features, but employing feeding networks based on digitally controlled variable phase shifters (VPSs) which have the disadvantage of high cost and limited angular resolution. Instead, time-modulated arrays (TMAs) use switched feeding networks governed by digital periodic sequences which allow harmonic patterns to be radiated and endows (TMAs) with attractive multifunctional capabilities. In this paper, we analyze and properly combine (TMA) switched feeding networks capable of time-modulating an antenna array with discretized amplitude modulation (AM) and phase modulation (PM) waveforms. The advantages of the proposed innovative dual-beam (TMA) with respect to the competing architectures are, on the one hand, its power efficiency and beamsteering (BS) phase sensitivity and, on the other, its hardware simplicity, which allows for an excellent relative cost advantage.
Palabras clave
Time-modulated arrays
Wireless sensor networks
Beam steering
Multibeam
Wireless sensor networks
Beam steering
Multibeam
Versión del editor
Derechos
Atribución 4.0 Internacional