...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Microwaves, Antennas & Propagation, IET >Quad-band linear to circular reflective polarisation transformer and its application in dual-sense circularly polarised antenna design
【24h】

Quad-band linear to circular reflective polarisation transformer and its application in dual-sense circularly polarised antenna design

机译：四波段线性至圆形反射极化变压器及其在双感圆极化天线设计中的应用

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

This study presents the design and application of a novel quad-band reflective polarisation transformer (RPT) with linear to dual-sense circular polarisation (LP to DS-CP) conversion. The proposed reflector is a highly miniaturised ($0.1lambda _0 imes 0 .025lambda _0$0.1 lambda 0x0.025 lambda 0) two-layered structure built on a thin dielectric substrate (0.005 lambda(0), where lambda(0) is the free-space wavelength of the lowest frequency with zero reflection phase) and backed by a ground plane. The design consists of anisotropic capacitive patches due to which the reflection phase of the orthogonal components of the LP wave differs by +90 degrees (yielding right-hand circularly polarised (LHCP)) at 2 GHz and by -90 degrees (yielding right-hand circularly polarised (RHCP)) at 2.4, 3.5 and 5.8 GHz. Further, it is proposed that the CP sense can be controlled by introducing narrow rectangular slots on both sides of the two-layered RPT. These perturbations delay (or advance) the reflections by 180 degrees, thereby converting RHCP component to LHCP (or vice-versa). This diversity principle is verified using full-wave and circuit simulations. A prototype of the RPT is fabricated and measured to validate these results. For practical verification, the RPT is placed behind a quad-band LP antenna operating exactly at the +/- 90 degrees reflection phase frequencies. The polariser converts LP to RHCP at 2.4-2.55/3.38-3.6 GHz and LP to LHCP at 2, 5.8-5.92 GHz.
机译：这项研究提出了一种新颖的具有线性到双检测圆极化（LP到DS-CP）转换的四频反射极化变压器（RPT）的设计和应用。拟议的反射器是高度薄化的（$ 0.1 lambda _0 times 0 .025 lambda _0 $ 0.1 lambda 0x0.025 lambda 0）两层结构，构建在薄的电介质基板上（0.005 lambda（0），其中lambda（0）是具有零反射相位的最低频率的自由空间波长），并由接地层作为支撑。该设计由各向异性电容片组成，由于这些电容片，LP波正交分量的反射相位在2 GHz时相差+90度（产生右旋圆偏振（LHCP）），而在-90度之间产生相差（右旋产生）圆极化（RHCP））的频率为2.4、3.5和5.8 GHz。此外，提出可以通过在两层RPT的两侧上引入窄矩形缝隙来控制CP方向。这些扰动将反射延迟（或提前）180度，从而将RHCP分量转换为LHCP（反之亦然）。使用全波和电路仿真验证了这种分集原理。制作并测量了RPT的原型，以验证这些结果。为了进行实际验证，将RPT放置在正以+/- 90度反射相位频率工作的四频带LP天线后面。偏振器在2.4-2.55 / 3.38-3.6 GHz下将LP转换为RHCP，并在2、5.8-5.92 GHz下将LP转换为LHCP。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号