Design of BFN with Application of 2D-DFT to 1D-DFT Equivalent Transformation Theory

应用2D-DFT到1D-DFT等效变换理论设计BFN

• 批准号: 09450153
• 负责人: INAGAKI Naoki
• 金额: $ 3.84万
• 依托单位: Nagoya Institute of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 1997
• 资助国家: 日本
• 起止时间: 1997 至 1998
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-09450153/
• 关键词: 1D-DFT; 2D-DFT; Sampling; Multiple Beam Array; BFN; Shelton's Method; Diversity Antenna; Microstrip Antenna; 1D-DFT; 2D-DFT; 標本化定理; ダイバーシチアンテナ; マイクロストリップ アンテナ

Following theoretical results have been obtained concerning mainly the equivalent transform theory from 2D-DFT to 1D-DFT with the new concept of simultaneous sampling.1.2D-DFT to 1D-DFT transformation theory has been applied to synthesize a BFN (beam forming network) of multiple beam array antennas.2. Mathematical basis has been given to Shelton's method of feeding planar multiple beam array antennas by a BFN for linear multiple beam array antennas.3. The traditional design of BFN based on experience has been given a theoretical support.4. The mutual coupling effects between elements have been clarified by the ICT theory when the designed array antenna have been used as adaptive array antennas.5. A cylindrical antenna as the elements has been numerically analyzed with a realistic modeling, and the usefulness has been demonstrated.6. BFNs with Light wave device have been proposed, which are designed by geometrical optics and are frequency independent. It has been shown that our theory can be applied to the design this kind of BFN.Following results have been obtained experimentally.1. From indoor experiments for manufactured array antennas used as a directive diversity antenna, the improve- ment factor of BER characteristics by diversity reception has been known.2. Microstrip antennas are small size, conformal, light weight, and are promising to be used as portable antennas, but are frequency sensitive in nature. The new type of log periodic microstrip antennas have been developed whose bandwidth have been increased by a factor of several tens.

本文主要从2D-DFT到1D-DFT的等效变换理论和同步采样的新概念得到了以下理论结果：将2D-DFT到1D-DFT变换理论应用于多波束阵列天线的波束形成网络的合成。给出了Shelton用线性多波束阵列天线的BFN馈电平面多波束阵列天线的方法的数学基础。传统的基于经验的BFN设计得到了理论支持。利用ICT理论分析了设计的阵列天线作为自适应阵列天线使用时，各单元之间的相互耦合效应。对圆柱天线作为单元进行了数值分析，并建立了仿真模型，验证了该方法的有效性。提出了一种采用几何光学方法设计的与频率无关的带有光波器件的bfn。结果表明，本文的理论可以应用于这类BFN的设计。实验结果如下：通过对人造阵列天线作为定向分集天线的室内实验，得到了分集接收对误码率特性的改善系数。微带天线具有体积小、保形、重量轻等特点，是一种具有频率敏感性的便携式天线。研制了一种新型的对数周期微带天线，其带宽提高了几十倍。

项目成果

Wei Cao, et al.: "The Method of Matrix-Order Reduction and Its Applications to Electromagnetic Problems" IEICE Trans. Commun.E80-B・4. 608-616 (1997)

Wei Cao 等：“矩阵阶约化方法及其在电磁问题中的应用”IEICE Trans.E80-B·4 (1997)。

Wei Cao, et al.: "Dimension-descent technique for electromagnetic problems" IEE Proc.-Microw. Antenuus Propay.144・5. 372-376 (1997)

Wei Cao 等：“电磁问题的维度下降技术”IEE Proc.-Microw.144・5 (1997)。

A.I.Imoro, et al.: "An Efficient ICT Method for Analysis of Co-planar Dipole Antenna Arroys of Arbitrary Longths" IEICE Trans. Commun.E81-B・3. 267-275 (1998)

A.I.Imoro 等人：“一种用于分析任意长度的共面偶极天线阵列的有效 ICT 方法”IEICE Trans.E81-B·3 (1998)。

I.Aoki, N.Inagaki and N.Kikuma: ""Application of Improved Circuit Theory to Corner Reflector Antenna Analysis, "" KJJC-AP/EMC/EMT'98 Proc.1. 45-48 (1998)

I.Aoki、N.Inagaki 和 N.Kikuma：“改进电路理论在角反射器天线分析中的应用”，KJJC-AP/EMC/EMT98 Proc.1。

H.Ozeki, S.Hayashi, N.Inagaki and N.Kikuma: ""Quasi Log-Periodic Microstrip Antenna with Closely Coupled Elements, "" T.IEEE Japan. 119-C,1. 51-56 (1999)

H.Ozeki、S.Hayashi、N.Inagaki 和 N.Kikuma：“具有紧密耦合元件的准对数周期微带天线”，T.IEEE 日本。