An Ultrathin 2-bit Near-Field Transmitarray Lens

被引：27

作者：

Gonzalez Plaza, Enrique ^{[1
]}

Leon, German ^{[1
]}

Loredo, Susana ^{[1
]}

Arboleya, Ana ^{[1
]}

Las-Heras, Fernando ^{[1
]}

Suarez Alvarez, Carlos Manuel ^{[2
]}

Rodriguez-Pino, Marcos ^{[1
]}

机构：

[1] Univ Oviedo, Area Signal Theory & Commun, Gijon 33203, Spain

[2] Univ Oviedo, Area Mfg Proc, Gijon 33203, Spain

来源：

IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS | 2017年 / 16卷

关键词：

Focusing; near field (NF); quasi-periodic surface; transmitarray (TA); ANTENNA; BAND;

D O I：

10.1109/LAWP.2017.2678599

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A novel ultrathin near-field (NF) 2-bit 24 x 24-element transmitarray lens working at X-band is presented in this letter. The aim of this antenna is to focus in a point located in the NF without using any complex feeding network. In order to obtain a planar lens with a very low profile, a 2-bit-design approach is used to diminish the number of layers used in the structure. The simulations have been done using a model based on the concept that the NF of an array can be calculated as the sum of the far-field contributions of every single one of its elements. These are considered as plane apertures over which the tangential electric field is constant. In order to validate the results of this model, they are compared to both those obtained with a full-wave commercial software and those from measurements. Thus, an NF antenna is manufactured and measured showing the measurements' good concordance with the results of the model.

引用

页码：1784 / 1787

页数：4

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