加載測向天線陣列的統(tǒng)一網(wǎng)絡(luò)模型研究
The Unified Network Model Analysis of the Loaded Antenna Array for Direction Finding
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摘要: 該文首先建立聯(lián)系天線陣元和加載網(wǎng)絡(luò)的統(tǒng)一網(wǎng)絡(luò)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(luò)模型理論,采用矩量法(MoM)分析了加載匹配補償網(wǎng)絡(luò)的五元圓形測向天線陣列(FCADF)。研究表明,電路網(wǎng)絡(luò)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(luò)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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魯?shù)婪蚋窭U編,平良子譯.無線電測向技術(shù).成都:西南電子電信技術(shù)研究所,1993,第二章. [2]Friedlander B, Weiss A J. Direction finding in the presence of mutual coupling. IEEE Trans. on Antennas Propagat., 1991, 39(3),273 - 284. [3]Hui H T. Improved compensation for the mutual coupling effect in a dipole array for direction finding. IEEE Trans. on Antennas Propagat., 2003, 51(9): 2498 - 2503. [4]Harrington R F. Field Computation by Moment Method, New York: IEEE Press, 1993, ch.5.[5]Li Long, Liang Changhong. Study of generalized resonance in antenna system, Proc. of 2002 3rd International Symposium on Electromagnetic Compatibility, Beijing, May 21- 24, 2002:162- 165. [6]金謀平.多導(dǎo)體散射中的廣義諧振研究.[博士論文],西安:西安電子科技大學(xué),2000. [7]劉其中,宮德明.天線的計算機輔助設(shè)計.西安:西安電子科技大學(xué)出版社,1988,第三章. [8]吳萬春,梁昌洪.微波網(wǎng)絡(luò)及其應(yīng)用.西安:西北電訊工程學(xué)院出版社,1978,第三章. -
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