Analysis of OAM Mode Purity in Phased Array Antenna

Li Li, Siying Guo, Yaqi Wang, Cong Liu, Xiaoli Yin

Abstract


In this paper, the orbital angular momentum of different modes in electric field is decomposed, and the definition of purity of OAM mode in OAM antenna are proposed. Based on the purity theory, the purity of circular array is derived. And the effects of different parameters on the purity are analyzed. An intuitive and quantifiable dimension for comparing the OAM performance in phased array antenna is provided in this paper.


Keywords


Orbital Angular Momentam (OAM); Phased Array Antenna; Mode Purity; Uniform Circular Array (UCA)

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References


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DOI: https://doi.org/10.18686/esta.v7i1.133

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