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2011•UTHM Institutional Repository (Universiti Tun Hussein Onn Malaysia)Requires access

Slot elements for tunable reflectarray antenna design

Muhammad Inam Abbasi, M. Y. Ismail

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Abstract

This paper presents a thorough analysis of different configurations of reflectarray resonant elements that can be\nused for the design of passive and tunable reconfigurable reflectarrays in the X-band frequency range. Reflection\nloss and bandwidth performance of these reflectarray elements have been highlighted based on Finite Element\nMethod (FEM) and Finite Integral Method (FIM) techniques and the results have been verified by the waveguide\nscattering parameter measurements. The results demonstrate a reduction of 11% in the phase errors offering an\nincreased static linear phase range of 353" which shows a feasibility of improving bandwidth performance of\nreflectarray antenna. Moreover a maximum dynamic phase range of 320" and a volume reduction of up to\n22.15% have also been demonstrated for reflectarray elements with circular slots at 10GHz.

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This paper presents a thorough analysis of different configurations of reflectarray resonant elements that can be\nused for the design of passive and tunable reconfigurable reflectarrays in the X-band frequency range. Reflection\nloss and bandwidth performance of these reflectarray elements have been highlighted based on Finite Element\nMethod (FEM) and Finite Integral Method (FIM) techniques and the results have been verified by the waveguide\nscattering parameter measurements. The results demonstrate a reduction of 11% in the phase errors offering an\nincreased static linear phase range of 353" which shows a feasibility of improving bandwidth performance of\nreflectarray antenna. Moreover a maximum dynamic phase range of 320" and a volume reduction of up to\n22.15% have also been demonstrated for reflectarray elements with circular slots at 10GHz.

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Available abstract

This paper presents a thorough analysis of different configurations of reflectarray resonant elements that can be\nused for the design of passive and tunable reconfigurable reflectarrays in the X-band frequency range. Reflection\nloss and bandwidth performance of these reflectarray elements have been highlighted based on Finite Element\nMethod (FEM) and Finite Integral Method (FIM) techniques and the results have been verified by the waveguide\nscattering parameter measurements. The results demonstrate a reduction of 11% in the phase errors offering an\nincreased static linear phase range of 353" which shows a feasibility of improving bandwidth performance of\nreflectarray antenna. Moreover a maximum dynamic phase range of 320" and a volume reduction of up to\n22.15% have also been demonstrated for reflectarray elements with circular slots at 10GHz.

Key concepts: Bandwidth (computing), Finite element method, Reduction (mathematics), Phase (matter), Reflection (computer programming), Optics, Frequency band, Acoustics

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