摘要:
該文首先建立聯(lián)系天線陣元和加載網(wǎng)絡的統(tǒng)一網(wǎng)絡模型,把路與場統(tǒng)一于廣義矩陣型歐姆定律之中?；诮y(tǒng)一網(wǎng)絡模型理論,采用矩量法(MoM)分析了加載匹配補償網(wǎng)絡的五元圓形測向天線陣列(FCADF)。研究表明,電路網(wǎng)絡的加載,引入了新的路與場相互作用,可有效補償天線單元之間的互耦影響,改善方向圖不圓度特性,并實現(xiàn)阻抗匹配,從而提高了測向精度。此外,測向天線陣列中的局域諧振現(xiàn)象,通過加載網(wǎng)絡也被有效抑制。
Abstract:
This paper first presents the unified network model associated antennas with loaded networks, which shows that the loaded circuit networks and the antennas (field networks) are unified by the generalized matrix Ohm’s law. Based on the theory of the unified network model, this paper give a rigorous study of the Five-element Circle Array for Direction Finding (FCADF) by using the Method of Moments (MoM). The results show that the interaction between circuits and fields is introduced by loading a matching and compensating network, which compensates the effect of mutual coupling between array elements, realizes impedance matching, and improves the non-circular degree of radiated pattern and the precision of direction finding. In addition, the local resonant phenomenon in FCAFD is effectively restrained by loading the circuit network.
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