直线振子和V形振子的时域辐射特性
THE TIME DOMAIN RADIATION CHARACTERISTICS OF DIPOLES AND V ANTENNAS
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摘要: 本文用时间步进法求解线天线的时域积分方程,计算分析了直线振子和V形振子的时域辐射特性。分析了馈源位置、加载大小对振子输入电流及远区辐射场的影响。对V形振子的长度及张角等参数作了优化,找到了获得前向辐射场强最大瞬时冲击值的结构参数,结果可供此类天线的设计参考。Abstract: The time domain radiation characteristics of dipoles and V antennas are obtained by solving the time domain electric field integrodifferential equation with the time-stepping approach. The effects of positions of the feeding source, the amounts of distributed loading along the antennas and the lengths and angles of V antennas on the input urrents and far field radiation characteristics are analyzed. The results obtained show that the appropriats amounts of distributed loading will yield a far field waveform that exhibits a time limited characted, that the deviation of the feeding source will reduce the maximum instant field intensities, and that in order to obtain the maximum instant field intensities in the certain direction, the optimum design for the parameters, such as length and angle, of V antennas is needed.
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E. P. Saye, R. F. Harrington, Appl. Sci. Res., 26(1972), 413-433.[2]R. Mittra, Integral Equation Method for Transient Scattering, in Transient Electromagnetic Fields, Edited by L. B. Felsen, Springer-Verlag, Berlin, Heidclberg, New York, 1976.[3]C. L. Bennett, The Numerical Solution of Transient Eletromagnetic Scattering Problems, in Ellectromagnetic Scattering, Edited by P.L. E. Uslenghi, Academic Press, Inc., 1978.[4]D. L. Sengupta, C.T. Tai, Radiation and Reception of Transients by Linear Amennas, in Transient Electromagnetic Fields, Edited by L. B. Felsen, Springer-Verlag, Berlin, Heidelberg, New York, 1976.[5]Sun Nai-hua, Time Domain Radiation Characteristics of Simple Wire Antenna Arrays, in Proceedings ofIEEE AP-S/URSI 1989 Symposium, 1989.[6]A. J. Poggio, E. K. Miller, 三维散射问题的积分方程解法,计算机技术在电磁学中的应用,R.米特拉编著,金元松译,人民邮电出版社,1983年. -
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