Matched, Low-Loss, and Wideband Graded-Index Flat Lenses for Millimeter-Wave Applications

被引：41

作者：

He, Yuchu ^{[1
]}

Eleftheriades, George V. ^{[1
]}

机构：

[1] Univ Toronto, Edward S Rogers Sr Dept Elect & Comp Engn, Toronto, ON M5S 2E4, Canada

来源：

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION | 2018年 / 66卷 / 03期

基金：

加拿大自然科学与工程研究理事会;

关键词：

Antireflection (AR); flat lens; graded-index (GRIN); impedance matching; millimeter-wave (mm-wave); BROAD-BAND; DESIGN;

D O I：

10.1109/TAP.2018.2790173

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：

Low reflection, low-loss, and wideband gradedindex (GRIN) flat artificial dielectric lenses utilizing GRIN antireflection (AR) layers are developed in this paper. The GRIN lens and the AR layers are realized by perforating regular microwave substrates. The resulting reflectance, transmittance, and dielectric losses of the designed lens are 0.06% (-32.2 dB), 96.7% (-0.14 dB), and 3.3% (-14.8 dB), respectively. This highly efficient lens is designed to collimate a commercial pyramidal horn at 34.3 GHz. Excellent agreement is observed between the simulated and measured results. The flat lens decreases the half-power beamwidth of the horn from 10 degrees to 6 degrees and increases the peak gain by an average of 5 dB within the frequency range of 26-39 GHz.

引用

页码：1114 / 1123

页数：10

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