衛(wèi)星陣饋反射面多波束天線賦形波束的性能分析
Performance analysis of shaped beam for multiple-beam antennas with array-fed reflectors
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摘要: 該文主要對賦形波束的性能與波束寬度和波束間隔間的關(guān)系進行了一般性的研究。首先提出4個能夠描述賦形波束性能好壞的性能指標。然后給出波束賦形問題的數(shù)學模型，這個模型建立了賦形波束的性能指標與波束寬度和波束間隔間的關(guān)系。接著應(yīng)用泛函分析理論推導(dǎo)了波束賦形問題的一般解，同時通過對這個一般解的討論，從信號與系統(tǒng)的角度闡明了波束賦形的機理。最后通過一個實際的例子分析了波束賦形的兩個參數(shù)波束寬度和波束間隔與性能指標之間的變化關(guān)系，并提出了選擇最佳波束寬度和波束間隔的簡易方法。
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關(guān)鍵詞:
- 衛(wèi)星通信; 多波束天線; 波束賦形
Abstract: In this paper a general study of the relation between the performance of shaped beams and beam width and spacing has been done for multiple-beam antennas with array-fed reflectors. Four parameters indicating the performance of shaped beams are first denned. On the basis of these parameters, a mathematical model of beam-shaping is presented which determines the relation between the performance of shaped beams and beam width and spacing and then this model is resolved by using functional analysis theory. Through the discussion of the solution, the mechanism of beam shaping is shown in signal and system way. Then this mechanism and the relation are illustrated by the explanation of the simulation results of a practical example. According to the relation proved above, with given performance parameters, optimum beam width and spacing can be chosen, which correspondingly determine the optimum configuration of the antenna. A very simple formulation for choosing the optimum beam width and spacing is finally obtained, as a result of the discussion in this paper. -
A.I. Zaghloul, Y. Hwang, R. M. Sorbello, F. T. Assal, Advances in multibeam communications satellite antennas, Proc. IEEE., 1990, 78(7), 1214-1232.[2]P.D. Patel, K. K. Chan, Optimization of contoured beams for satellite antennas, IEE Proc.-H.[J].Microwaves, Antennas Propagation.1985,132(6):400-406[3]H. Schjaer-Jacobsen, K. Madsen, Synthesis of nonuniformly spaced arrays using a general nonlinear minimax optimization method, IEEE Trans. on AP, 1976, AP-24(4), 501-506.[4]張亦希,傅君眉,汪文秉,LCMV方法在衛(wèi)星多波束天線賦形中的應(yīng)用,電子學報,2002,30(3),332-334[5]S. Tanaka, T. Yamada, T. Murata, T. Nomoto, H. Matsumura, A study on pattern synthesis method for array-fed reflector antenna for advanced direct broadcasting satellites, IEEE Antennas and Propagation Society, AP-S International Symposium(Digest), Jul 8-13, 2001, Vol.1,566-569.[6]J. Ruze, Lateral-feed displacement in a paraboloid, IEEE Trans. on AP, 1965, AP-13(9), 660-665.[7]D. Sonderogger, Satellite antenna pattern optimization and loading model: Methodology report, Defense Information System Agency Identification Number DCA100-90-C-0058, Jan. 1992. -
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