介質(zhì)平面上高頻單極天線特性分析
ANALYZING HF ANTENNA CHARACTERISTICS ON DIELECTRIC PLANE
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摘要: 該文用時(shí)域有限差分法(Finite Difference Time Domain,FDTD)計(jì)算介質(zhì)平面上單極天線的阻抗特性。用FDTD法計(jì)算天線的輻射特性可以使用不同的激勵(lì)方式,文章比較了采用不同激勵(lì)方式時(shí),天線的輸入阻抗。文章的主要內(nèi)容是將表面阻抗法用于FDTD中,計(jì)算架設(shè)在介質(zhì)平面上單極天線的輻射特性,并用FDTD法計(jì)算了介質(zhì)平面上鋪設(shè)不同尺寸的導(dǎo)體平面時(shí),天線的阻抗特性。
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關(guān)鍵詞:
- 時(shí)域差分; 表面阻抗; 天線
Abstract: In this paper, Finite Difference Time Domain(FDTD) method is used to calculate the radiation characteristics of the antenna located on loss ground. For FDTD method, there are different feed models to calculate the input impendence of antenna. The results calculated by different feed models are compared with each other. The important point of the paper is to calculate the radiation characteristics of monopole on dielectric plane, and analyzes input impedance change with the size change of conducting ground system on the surface of dielectric plane. -
J.G. Maloney, G. S. Smith, The use of surface impedance concepts in the finite difference time domain method, IEEE Trans. on Electromagnetic Compat., 1992, EC-40(1), 38-48.[2]J.H. Beggs, R. J. Luebbers, Finite difference time domain implementation of surface impedance boundary condition, IEEE Trans. on Antenna and propagation, 1992, AP-40(1), 49-56.[3]G.M. Jams, S. S. Glnn, Accurate computation of the radiation from simple antennas using the finite difference time domain method, IEEE Trans. on Antenna and Propagation, 1990, AP-38(7),1059-1068.[4]L. Chen, T. Uno, FDTD method analysis of a mono-pole antenna mounted on a conducting rectangular box, IEEE AP-S Int. Symp. Dig., 3, 1992, 1670-1678.[5]K. Karls, J. L. Raymond, Finite Difference Time Domain Method for Electromagntics, London,CRC Press, Inc. 1993, Chapter 9. ［6］F.B. Hildebrand, Introduction to Numerical Analysis, New York, Dover, 1974, 457 462. ［7］R.A. Frank, Design of optimum buried-conductor RF ground system, Proc. IRE 1952, 846-852. -
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