Optimization of Directional Antennas in Two-Dimensional Artificial Dielectrics

• Authors: M. Janowicz , M. Rusek , A. Orłowski
• Languages of publication: EN

Abstracts

EN

We investigate numerically the problem of optimization of directional characteristics of dipole antennas located inside, or in the vicinity of, photonic crystals or more general artificial dielectrics, made of very thin perfectly conducting wires. We concentrate on two-dimensional propagation. Simulated annealing is used to find the distribution of wires which optimizes the directional pattern. It is demonstrated that high directivity can be obtained for systems containing a very small number of elements provided that the size and shape of the unit cell as well as the position of the radiating source with respect to the crystal are optimized. Building up of the radiation pattern is also illustrated with the help of the wave-optical rays.

Keywords

EN

41.20.Jb; 84.40.Ba; 42.25.Bs

Discipline

• 41.20.Jb: Electromagnetic wave propagation; radiowave propagation(for light propagation, see 42.25.Bs; for electromagnetic waves in plasma, see 52.35.Hr; for atmospheric, ionospheric, and magnetospheric propagation, see 92.60.Ta, 94.20.Bb, and 94.30.Tz, respectively; see also 94.05.Pt Wave/wave, wave/particle interactions, in space plasma physics)
• 42.25.Bs: Wave propagation, transmission and absorption[see also 41.20.Jb—in electromagnetism; for propagation in atmosphere, see 42.68.Ay; see also 52.40.Db Electromagnetic (nonlaser) radiation interactions with plasma and 52.38-r Laser-plasma interactions—in plasma physics]
• 84.40.Ba: Antennas: theory, components and accessories(for plasma interactions with antennas, see 52.40.Fd in plasma physics)

• Journal: Acta Physica Polonica A
• Year: 2004
• Volume: 105
• Issue: 3
• Pages: 263-278

Dates

published

2004-03

received

2003-11-05

Contributors

author

M. Janowicz

• Institut für Physik, Carl von Ossietzky Universität, 26111 Oldenburg, Germany

author

M. Rusek

• Instytut Fizyki, Polska Akademia Nauk, al. Lotników 32/46, 02-668 Warszawa, Poland

author

A. Orłowski

• Instytut Fizyki, Polska Akademia Nauk, al. Lotników 32/46, 02-668 Warszawa, Poland

References

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Identifiers

DOI

10.12693/APhysPolA.105.263