Spectral domain analysis of wall admittances for circular and annular microstrip patches and the effect of surface waves
作者： A. Bhattacharyya , R. Garg
关键词: Singularity 、 Hankel transform 、 Electrical impedance 、 Physics 、 Microstrip 、 Susceptance 、 Mathematical analysis 、 Optics 、 Input impedance 、 Microstrip antenna 、 Admittance
摘要: Wall admittances for circular and annular ring microstrip antennas have been determined, including the effect of substrate. The magnetic current model is used analysis carried out in Hankel transform domain. final expressions wall are obtained integral form. contributions surface wave to conductances determined by evaluating integrals near singularity using extraction technique. radiation conductance has simple integration. value susceptance, this paper, agrees well with Kirchhoff's equivalent extension formula. A closed form expression susceptance TM_{1n} mode curve fitting numerical values. substrate on admittance found be significant higher order modes shown explain measured input impedance an antenna.
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