Numerical analysis of arbitrarily shaped probe-excited single-arm printed wire antennas

A general integral equation technique is described for analysis of an arbitrarily shaped single-arm printed wire antenna excited through a vertical probe. A unified current integral equation is formulated on the basis of dyadic Green's functions and the reciprocity theorem. The current distribution is obtained by using a parametric moment method in which parameter segments are adopted for the printed wire instead of the commonly employed wire length segments. The radiation field solution involving both the printed antenna and vertical probe is also presented. The validity of the formulation is verified by comparing the numerically obtained input impedance and radiation patterns for a linear antenna and a meander antenna with measured data. A circular open loop and an Archimedian spiral are investigated to illustrate the applicability of the present technique.

[1]  E. Kuester,et al.  Numerical computation of 2D Sommerfeld integrals—a novel asymptotic extraction technique , 1992 .

[2]  H. Hejase,et al.  Analysis of a printed wire loop antenna , 1994 .

[3]  R. Edwards,et al.  Moment method analysis of printed single-arm wire spiral antennas using curved segments , 1997 .

[4]  E. Kuester,et al.  Numerical computation of 2D Sommerfeld integrals—decomposition of the angular integral , 1992 .

[5]  Hisamatsu Nakano,et al.  Numerical analyses of printed line antennas , 1989 .

[6]  Salam K. Khamas,et al.  Moment-method analysis of printed wire spirals using curved piecewise sinusoidal subdomain basis and testing functions , 1997 .

[7]  Nicolaos G. Alexopoulos,et al.  The moment method solution for printed antennas of arbitrary configuration , 1987, 1987 Antennas and Propagation Society International Symposium.

[8]  A new numerical technique for calculating current distributions on curved wire antennas - parametric B-spline finite element method , 1996 .

[9]  J. Mosig,et al.  Analytical and numerical techniques in the Green's function treatment of microstrip antennas and scatterers , 1983 .

[10]  N. Uzunoglu,et al.  Radiation properties of microstrip dipoles , 1979 .

[11]  G. Annaert,et al.  Evaluation of Sommerfeld integrals using Chebyshev decomposition (antenna analysis) , 1993 .

[12]  Junji Yamauchi,et al.  A monofilar spiral antenna and its array above a ground plane-formation of a circularly polarized tilted fan beam , 1997 .

[13]  Donald R. Wilton,et al.  Analysis of Resistively Loaded, Printed Spiral Antennas , 1994 .

[14]  Hisamatsu Nakano,et al.  C-figured loop antennas , 1995 .

[15]  N. Alexopoulos,et al.  Current distribution and input impedance of printed dipoles , 1981 .

[17]  N. Alexopoulos,et al.  Radiation by a probe through a substrate , 1986 .