Antenna analysis using PEEC and the complex image method
2006 (English)In: Proceedings of the Nordic Antenna Symposium, Försvarets materielverk , 2006Conference paper (Refereed)
The PEEC method is a 3D, full wave modeling method suitable for combined electromagnetic and circuit analysis. In the PEEC method, the integral equation is interpreted as Kirchoff's voltage law applied to a basic PEEC cell which results in a complete circuit solution for 3D geometries. The equivalent circuit formulation allows for additional SPICE-type circuit elements to easily be included. Further, the models and the analysis apply to both the time and the frequency domain. The circuit equations resulting from the PEEC model are easily constructed using a condensed modified loop analysis (MLA) or modified nodal analysis (MNA) formulation. In the MNA formulation, the volume cell currents and the node potentials are solved simultaneously for the discretized structure. To obtain field variables, post-processing of circuit variables is necessary.In this paper, it is shown that how the PEEC method is applied to model antenna characteristics, including input impedance and radiation diagrams, by use of the appropriate Green's function in the calculation of partial elements. The electric field for a layered medium is a three-dimensional convolution between the dyadic Green's function and the source current density. This convolution integral is strongly singular which makes the numerical integration very time-consuming. Solving this type of integral is one of the topics within electromagnetism. By using the complex image method (CIM), the appropriate Green's function is obtained much easier in terms of, for instance, spherical wave components where the real and imaginary sources are expressed in a series of summations. As a result, the time complexity for computing coefficients of potential Pij and partial inductances Lpij within PEEC is improved. The appropriate Green's functions, obtained in this process, will also be used to determine the volume cell currents I and node voltages V in a structure.
Place, publisher, year, edition, pages
Försvarets materielverk , 2006.
Research subject Industrial Electronics
IdentifiersURN: urn:nbn:se:ltu:diva-38310Local ID: ca873ea0-7423-11db-962b-000ea68e967bOAI: oai:DiVA.org:ltu-38310DiVA: diva2:1011809
The Nordic antenna symposium : 30/05/2006 - 01/06/2006
Godkänd; 2006; 20061114 (ysko)2016-10-032016-10-03Bibliographically approved