Field of a short dipole above a dielectric half-space with rough interface

NCUIR > College of Electrical Engineering & Computer Science > Department of Electrical Engineering > journal & Dissertation > Item 987654321/107232

Please use this identifier to cite or link to this item: https://ir.lib.ncu.edu.tw/handle/987654321/107232

Title:	Field of a short dipole above a dielectric half-space with rough interface
Authors:	丘增杰;Chiu, Tsenchieh;Sarabandi, Kamal
Contributors:	資訊電機學院電機工程學系
Keywords:	arbitrary dielectric profile;arbitrary observation point;bistatic scattering;classical Sommerfeld problem;coherent field;Coherent scattering;dielectric ground plane;dielectric half‐space;dielectric materials;dielectric media;Dielectrics;Dipoles;electromagnetic wave polarisation;electromagnetic wave propagation;electromagnetic wave scattering;Exact solutions;Half spaces;HF‐UHF frequencies;incoherent scattered power;induced polarisation current;integral equation;interface profile height variations;irregular terrain features;Irregularities;low‐power communication systems;Microwave antennas;perturbation solution;plane wave;Plane waves;radiowave coverage;rough surface;short dipole;surface roughness
Date:	2015-01-01
Issue Date:	2026-04-23 14:01:32 (UTC+8)
Publisher:	Institution of Engineering and Technology;The Institution of Engineering and Technology
Abstract:	摘要： The accurate prediction of radiowave coverage at high frequency-ultra high frequency over irregular terrain features is of importance in the design and development of low-cost and low-power communication systems. This study studies the problem of electromagnetic wave propagation, excited by a short dipole, above a dielectric ground plane with an arbitrary dielectric profile and an irregular interface. This investigation is a natural extension of the classical Sommerfeld problem with the exception of the random surface irregularities at the interface between the two dielectric media. It is assumed that the interface profile height variations are small compared with the wavelength. First, the bistatic scattering of a plane wave illuminating the rough surface is solved using a perturbation solution of an integral equation for the induced polarisation current. Analytical expressions for the coherent field and incoherent scattered power at an arbitrary observation point are obtained. Then, the solutions for the coherent and incoherent scattered power generated by a small dipole of arbitrary orientation and position are derived by expanding the field of the dipole in terms of a continuous spectrum of plane waves and using superposition. The effects of the rough interface on the surface waves and on depolarisation are studied. 出版者： The Institution of Engineering and Technology 出版日期： 2015-01-09 出處： IET microwaves, antennas & propagation, 2015-01, Vol.9 (1), p.31-40 資源來源： Wiley Online Library Open Access 版權： The Institution of Engineering and Technology 版權： 2015 The Institution of Engineering and Technology 識別號： ISSN: 1751-8725 識別號： ISSN: 1751-8733 識別號： EISSN: 1751-8733 識別號： DOI: 10.1049/iet-map.2013.0498
Appears in Collections:	[Department of Electrical Engineering] journal & Dissertation

Files in This Item:

File	Description	Size	Format
index.html		0Kb	HTML	24	View/Open

社群 sharing

Loading...