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Cyclic additional optical true time delay for microwave beam steering with spectral filtering

机译:带有频谱滤波的微波波束控制的循环附加光学真实时间延迟

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摘要

Optical true time delay (OTTD) is an attractive way to realize microwave beam steering (MBS) due to its inherent features of broadband, low-loss, and compactness. In this Letter, we propose a novel OTTD approach named cyclic additional optical true time delay (CAO-TTD). It applies additional integer delays of the microwave carrier frequency to achieve spectral filtering but without disturbing the spatial filtering (beam steering). Based on such concept, a broadband MBS scheme for high-capacity wireless communication is proposed, which allows the tuning of both spectral filtering and spatial filtering. The experimental results match well with the theoretical analysis.
机译:由于其固有的宽带,低损耗和紧凑性,光学真实时间延迟(OTTD)是实现微波波束控制(MBS)的一种有吸引力的方法。在这封信中,我们提出了一种新颖的OTTD方法,称为循环附加光学真实时间延迟(CAO-TTD)。它应用了微波载波频率的其他整数延迟来实现频谱滤波,但又不影响空间滤波(波束控制)。基于这样的概念,提出了一种用于大容量无线通信的宽带MBS方案,该方案允许同时调整频谱滤波和空间滤波。实验结果与理论分析吻合良好。

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