Electromagnetic Radiation by Antennas of Arbitrary Shape in a Layered Spherical Media

Abstract

Article ReuseUnless indicated otherwise, fulltext items are protected by copyright with all rights reserved. The copyright exception in section 29 of the Copyright, Designs and Patents Act 1988 allows the making of a single copy solely for the purpose of non-commercial research or private study within the limits of fair dealing. The publisher or other rights-holder may allow further reproduction and re-use of this version -refer to the White Rose Research Online record for this item. Where records identify the publisher as the copyright holder, users can verify any specific terms of use on the publisher's website. TakedownIf you consider content in White Rose Research Online to be in breach of UK law, please notify us by emailing eprints@whiterose.ac.uk including the URL of the record and the reason for the withdrawal request.

Electromagnetic Characteristics of Conformal Dipole Antennas Over a Pec Sphere

“…where A is magnetic vector potential and ψ the electric scalar potential as defined in [14]. Since tangential component of electric field vanishes on perfect conducting metal, impedance matrix by applying MPIE and Galerkin's method can be written as:…”

“…These functions are presented in spherical coordinates in [14]. r(r, θ, ϕ) and r (r , θ , ϕ ) refer to field and source position vectors, respectively.…”

“…All spherical dyad components can be converted to Cartesian dyads. As an example the conversion equation ofrφ component of a dyad is extracted as follows: rφ = (sin θ f cos ϕ fx +sin θ f sin ϕ fŷ +cos θ fẑ )(− sin ϕ sx +cos ϕ sŷ ), (14) where subscripts f and s refer to field and source points, respectively. Therefore, the Cartesian DGFs compatible with vector currents components can be obtained by using the aforementioned conversion method.…”

“…Antenna input admittance is determined using MoMs and solving MPIE by both asymptotic approximation formulas [7] and DGFs proposed in [14] with unit dielectric constants in all three layers. The results are compared with those obtained from CST Microwave Studio simulator [17].…”

Mathematical Modeling of Spherical Microstrip Antennas and Applications

“…The feeding of the spherical microstrip is usually modeled as a source located between the PEC core and the patch (Chen et al, 1997;Sipus et al, 2008;Khamas, 2009). A common type of source utilized in such cases is an axial probe connecting the two PEC surfaces.…”