Circularly Polarized Transmitarray With Sequential Rotation in Ka-Band

被引：83

作者：

Di Palma, Luca ^{[1
]}

Clemente, Antonio ^{[1
]}

Dussopt, Laurent ^{[1
]}

Sauleau, Ronan ^{[2
]}

Potier, Patrick ^{[3
]}

Pouliguen, Philippe ^{[4
]}

机构：

[1] CEA, LETI, F-38054 Grenoble, France

[2] Univ Rennes 1, IETR, UMR CNRS 6164, F-35042 Rennes, France

[3] DGA, F-35174 Bruz, France

[4] Off Adv Res & Innovat, Strategy Directorate, DGA, F-92221 Bagneux, France

来源：

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION | 2015年 / 63卷 / 11期

关键词：

Circular polarization (CP); discrete lens; sequential rotation; transmitarray; ARRAYS;

D O I：

10.1109/TAP.2015.2474149

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：

We present here the design and demonstration of a circularly polarized (CP) transmitarray antenna operating in Ka-band and illuminated by a linearly polarized (LP) source. The proposed design is based on a CP unit-cell with simulated insertion loss of 0.2 dB at 30 GHz. In order to improve the axial ratio (AR) bandwidth, the sequential rotation technique is applied to the full array configuration. A model based on a hybrid in-house simulation tool is also proposed to predict accurately the array performance. The realized prototype, formed by 400 unit-cells, has 1 bit of phase resolution. The measured broadside gain is 22.8 dBi at 30 GHz with a 3-dB bandwidth of 20% in right-handed CP (RHCP). The obtained 3-dB AR bandwidth of 24.4% is comparable with higher resolution designs.

引用

页码：5118 / 5124

页数：8

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