Design and optimization of Frequency Selective Surfaces (FSS)
The analysis method for Frequency Selective Surfaces (FSS), the spectral-domain Method of Moments (MoM) is improved to be applicable to normal incidence. A more efficient optimization algorithm, Differential Evolution Strategy (DES) is proposed to optimize the standard, non-irregular FSS unit-cell a...
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| Format: | Theses and Dissertations |
| Published: |
2008
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| Online Access: | https://hdl.handle.net/10356/4833 |
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| Institution: | Nanyang Technological University |
| Summary: | The analysis method for Frequency Selective Surfaces (FSS), the spectral-domain Method of Moments (MoM) is improved to be applicable to normal incidence. A more efficient optimization algorithm, Differential Evolution Strategy (DES) is proposed to optimize the standard, non-irregular FSS unit-cell and dielectric properties. DES coupled with spectral-domain MoM is proposed to design arbitrary FSS structures especially with multi-layered hexagon and gangbuster array. DES combined with Equivalent Circuit Model (ECM) is proposed to design double-square, gridded-square and gridded-double-square array for multi-band application. The DES is applied to optimize the dimensions and dielectric properties of FSS dipole array. The frequency response of FSS screen is analyzed by employing spectral-domain MoM or ECM technique. The tedious trial and error procedure is avoided. |
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