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首页> 外文期刊>Applied Computational Electromagnetics Society journal >Detail-Oriented Design of a Dual-Mode Antenna with Orthogonal Radiation Patterns Utilizing Theory of Characteristic Modes
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Detail-Oriented Design of a Dual-Mode Antenna with Orthogonal Radiation Patterns Utilizing Theory of Characteristic Modes

机译：利用特征模式理论的正交辐射图双模天线面向细节的设计

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In this paper, theory of characteristic modes (TCMs) is used to perform modal analysis of a trapezium-shaped PEC plate. So it follows that a wide-spread overview about the electromagnetics behavior of the plate is provided. The first seven characteristic currents and corresponding resonance frequencies of the structure are obtained. All modes are orthogonal to each other. By applying the reactive loading, the first two modes are forced to be resonating close to each other at frequency of about 3.5 GHz, which is suitable for WiMax applications. To excite aforementioned modes on the structure, an appropriate configuration of microstrip feed lines is utilized. Due to the orthogonality property of current modes, the created radiation patterns are also orthogonal to each other. Since two characteristic currents are excited on the structure's body, it is expected to achieve two orthogonal radiation patterns too, which could result in a dual-mode antenna. To carry out the above-mentioned modal analysis, a specific method of moments (MoM) code has been developed and applied. The proposed antenna is simulated by well-known full-wave package Ansoft HFSS and results clarification of the expectations about the orthogonality in patterns.
机译：本文采用特征模式理论（TCMs）对梯形PEC板进行模态分析。因此，可以提供有关板的电磁行为的广泛概述。获得结构的前七个特征电流和相应的共振频率。所有模式彼此正交。通过施加电抗性负载，前两种模式被迫在大约3.5 GHz的频率下彼此靠近谐振，这适用于WiMax应用。为了在结构上激发上述模式，利用了微带馈线的适当配置。由于当前模式的正交性，所创建的辐射图也彼此正交。由于在结构体上激发了两个特征电流，因此有望实现两个正交的辐射方向图，这可能会导致使用双模天线。为了进行上述模态分析，已经开发并应用了特定的矩量法（MoM）代码。所提出的天线是通过众所周知的全波封装Ansoft HFSS仿真的，结果澄清了关于图案正交性的期望。

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