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Étude de nouvelles technologies d’antennes pour applications 5G dans la bande millimétrique.

Abstract : This thesis is at the heart of the 5th generation of mobile networks (5G), and more particularly within the framework of point-to-point “backhaul” urban transport networks, accomplished through the intermediary of millimeter microwave links (FH). The chosen solution should be compact, low-cost to manufacture, high radiation performance, and ultimately capable of integrating self-aligning RF devices. Due to its large available bandwidth, the D band (130-174.8 GHz) is considered a good candidate for high-capacity links. Among different antenna structures analyzed, Transmitarrays show very promising performances in terms of isotropic gain, bandwidth, purity of radiation, simplicity of manufacture and compatible with the operation in double orthogonal polarization. A first high gain, broadband, high radiation performance D-band TA antenna solution is designed, then validated by measurements in an anechoic chamber, using a near-field scanner. To meet dual-band needs, a second TA antenna solution operating in E (71-86 GHz) and D bands is developed, based on the coplanar cohabitation of the unit cells of the two bands in hybrid mode (interlacing and replacement), while maintaining the simplicity of manufacture. The simulations show an overall retention of good performance in both bands, and good prospects for dual-band millimeter solutions with integration of self-aligning RF elements.
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Submitted on : Tuesday, November 16, 2021 - 11:32:17 AM
Last modification on : Friday, November 19, 2021 - 3:49:17 AM


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  • HAL Id : tel-03430428, version 1


Wassim Saleh. Étude de nouvelles technologies d’antennes pour applications 5G dans la bande millimétrique.. Electronique. UNIVERSITE DE NANTES, 2021. Français. ⟨tel-03430428⟩



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