Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.8/3591
Título: Electronically Reconfigurable FSS-Inspired Transmitarray for 2-D Beamsteering
Autor: Reis, Joao R.
Caldeirinha, Rafael F. S.
Hammoudeh, Akram
Copner, Nigel
Palavras-chave: Frequency selective surfaces
Varactors
Capacitance
Transmitting antennas
Horn antennas
Prototypes
Beam steering
Transmitarray (TA)
Data: 2017
Resumo: A novel electronically reconfigurable transmitarray (TA) with 2-D beamsteering capability is presented in this communication. The proposed structure, inspired on frequency selective surfaces loaded with varactor diodes, allows the phase range of each TA element to be individually controlled enabling an automated steering of the main lobe of an original antenna pattern, in both elevation and azimuth planes (2-D beamsteering). This has been demonstrated on a 5 × 5 unit-cell stacked structure with active feeding, coupled to the aperture of a standard gain horn antenna. A complete electromagnetic study using CST Microwave Studio is presented to evaluate and characterize the TA elements and the effect the proposed feeding network has on the structure's behavior. Following initial simulations, a prototype of the active TA has been characterized. Automated antenna beamsteering with ranges up to Az = 28° and El = 26° and 1° of angular resolution, is achieved by means of electromagnetic simulations and validated against experimental results at 5.2 GHz.
Peer review: yes
URI: http://hdl.handle.net/10400.8/3591
DOI: 10.1109/TAP.2017.2723087
Aparece nas colecções:Artigos em revistas internacionais

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