Directive photonic-bandgap antennas

This paper introduces two new photonic bandgap (PBG) material applications for antennas, in which a photonic parabolic reflector is studied. It is composed of dielectric parabolic layers associated to obtain a PBG material. The frequency gap is used to reflect and focus the electromagnetic waves. Th...

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Bibliographic Details
Published in:IEEE transactions on microwave theory and techniques 1999-11, Vol.47 (11), p.2115-2122
Main Authors: Thevenot, M., Cheype, C., Reineix, A., Jecko, B.
Format: Article
Language:English
Subjects:
Antenna measurements
Antennas
Devices
Dielectric materials
Dielectric measurements
Directive antennas
Directivity
Electromagnetic scattering
Electromagnetic waves
Finite difference method
Finite difference methods
Finite difference time domain method
Frequency
Parabolas
Photonic band gap
Photonics
Reflector antennas
Time domain analysis
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Summary:This paper introduces two new photonic bandgap (PBG) material applications for antennas, in which a photonic parabolic reflector is studied. It is composed of dielectric parabolic layers associated to obtain a PBG material. The frequency gap is used to reflect and focus the electromagnetic waves. This device has been designed using a finite-difference time-domain (FDTD) code. FDTD computations have provided the theoretical reflector's directivity. These results are in good agreement with measurements, and it appears that the PBG reflector presents the same directivity as a metallic parabola. A second application uses a defect PBG material mode associated with a metallic plate to increase the directivity of a patch antenna. We explain the design of such a device and propose experimental results to validate the theoretical analysis.
ISSN:0018-9480
1557-9670
DOI:10.1109/22.798007