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Listar por palabra clave "Optical beamforming"

Mostrando ítems 1-8 de 8

Microwave photonics applications of multicore fibers

Gasulla Mestre, Ivana; Capmany Francoy, José (Institute of Electrical and Electronics Engineers (IEEE), 2012-06)

This is the first time, to our knowledge, that the application of multicore fibers (MCFs) to the field of microwave photonics (MWP) has been proposed. The implementation of sampled optical delay lines for RF signals by ...
Optical Beamformer for 2-D Phased Array Antenna With Subarray Partitioning Capability

Ortega Tamarit, Beatriz; Mora Almerich, José; Chulia, R. (Institute of Electrical and Electronics Engineers (IEEE), 2016-06)

This paper proposes an optical beamforming network for a 2-D array antenna in a broad direction range with subarray antenna partitioning capability. With reasonable cost and volume, this optical true time delay beamformer ...
Optical Beamforming Network based on Fiber Optical Delay Lines and Spatial Light Modulators for Large Antenna Arrays

Vidal Rodriguez, Borja; Mengual Chulia, Teresa; Ibáñez-López, Cristina; Martí Sendra, Javier (Institute of Electrical and Electronics Engineers, 2006-12-15)

[EN] An optical beamformer for antenna arrays based on fiber-optical delay lines for feeding subarrays and spatial light modulators to change the radio-frequency phase of independent antenna elements is proposed. The ...
Optical Phase-based Beamformer using MZM SSB Modulation combined with Crystal Polarization Optics and a Spatial Light Modulator

Mengual Chulia, Teresa; Vidal Rodriguez, Borja; Stoltidou, Chr.; Blanch, S.; Martí Sendra, Javier; Jofre, L.; McKenzie, I.; del Cura, J.M. (Elsevier, 2008-01-15)

[EN] The performance of a widely tunable phase-based beamformer for phased array antennas using a new technique to cross-polarized the carrier and the sideband, in order to allow the phase control by means of a spatial ...
Optically Beamformed Wideband Array Performance

Jofre, Lluis; Stoltidou, Chrysavgi; Blanch, Sebastián; Mengual Chulia, Teresa; Vidal Rodriguez, Borja; Martí Sendra, Javier; McKenzie, Iain; del Cura, J.M. (Institute of Electrical and Electronics Engineers, 2008-06)

[EN] Optical beamforming networks (OBFNs) are an interesting alternative for the design of wideband antenna arrays, mainly due to their low losses and weight, their high parallel processing capabilities and their electromagnetic ...
Recent Breakthroughs in Microwave Photonics

Gasulla Mestre, Ivana; Lloret Soler, Juan Antonio; Sancho Durá, Juan; Sales Maicas, Salvador; Capmany Francoy, José (Institute of Electrical and Electronics Engineers (IEEE): OAJ, 2011-04)

We present a brief review of recent accomplishments in the field of Microwave Photonics (MWP). Recent research across a broad range of MWP applications is summarized, including photonic generation of microwave, millimeter, ...
Simplified WDM Optical Beamforming Network for Large Antenna Arrays

Vidal Rodriguez, Borja; Mengual Chulia, Teresa; Ibáñez-López, Cristina; Martí Sendra, Javier; McKenzie, Iain; Vez, Emilio; Santamaría, Javier; Dalmases, Francesc; Jofre, Lluis (Institute of Electrical and Electronics Engineers, 2006-05-16)

[EN] A novel approach to simplify optical beamforming networks based on wavelength-division-multiplexing (WDM) optical sources and a dispersive medium is proposed. The technique relies on the combination of dispersive and ...
Wide-Band Nulling System for Antenna Array based on a Photonic Microwave Filter and Optical Delay Lines

Mengual Chulia, Teresa; Vidal Rodriguez, Borja; Martí Sendra, Javier (Elsevier, 2009-10-01)

[EN] A nulling system for phased array antennas with broad bandwidth and reduced complexity is presented. The system is based on combining the output of an optical beamforming network with an optical transversal filter ...