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Computational analysis and verifications of characteristic modes in real materials

In English

Författare

Summary, in English

Despite its long history, the Theory of Characteristic Modes has only been utilized in antenna design for perfect electric conductors. This is due to computational problems associated with dielectrics and magnetic materials. In particular, the symmetric form of the PMCHWT surface formulation for the Method of Moments (MoM) solves for both external (real) and internal (non-real) resonances of a structure. The external resonances are the characteristic modes, whereas the internal resonances are not. This article proposes a new post-processing method capable of providing unique and real characteristic modes in all physical mediums, including lossy magnetic and dielectric materials. The method removes the internal resonances of a structure by defining a minimum radiated power, which is found through utilizing the physical bounds of the structure. The characteristic modes found using the proposed method are verified through the use of a MoM volume formulation, time domain antenna simulations, and experiments involving multiple antenna prototypes.

Publiceringsår

2016

Språk

Engelska

Sidor

2595-2607

Publikation/Tidskrift/Serie

IEEE Transactions on Antennas and Propagation

Volym

64

Issue

7 (Special Issue)

Dokumenttyp

Artikel i tidskrift

Förlag

IEEE - Institute of Electrical and Electronics Engineers Inc.

Ämne

  • Electrical Engineering, Electronic Engineering, Information Engineering

Nyckelord

  • quality factor
  • MIMO systems
  • dielectric resonant antenna
  • characteristic modes
  • Antenna design

Status

Published

Projekt

  • Systematic Antenna Design Using the Theory of Characteristic Modes
  • EIT_Optantsys Novel Antenna System Design Paradigm for High Performance Mobile Communications
  • ELLIIT LU P01: 5G Wireless

Forskningsgrupp

  • Electromagnetic theory
  • Communications Engineering

ISBN/ISSN/Övrigt

  • ISSN: 0018-926X