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Integration of H-shaped element with rectangular slor for broadband reflectarray antennas

Sulaiman, Noor Hafizah and Ismail, Muhammad Yusof Integration of H-shaped element with rectangular slor for broadband reflectarray antennas. In: International Seminar on the Application of Science & Mathematics 2011, 1 - 3 November 2011, Putra World Trade Centre, KL, Malaysia.


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Printed reflectarray antenna is becoming rapid ly an attractive alternative to the more conventional parabolic reflector and phased array antennas due to its advantages such as lighter weight, low loss, easy to maintenance and less cost. However, the reflectarray antenna has a limited bandwidth performance due to its elements and spatial phase delays caused by the different lengths from the feed for each point on the wave front of the radiated beam. To enhance the static linear phase range and bandwidth performance of X band reflectarray antenna, this paper presents a novel technique by employing rectangular slot on H-shaped reflectarray antenna design. The numerical results based on Finite Integral Method demonstrate that the introduction of rectangular slot attached on H-shaped patch element is shown to increase the static linear phase range fro m 135.14 ° to 219.07 ° . Additionally analysis of the static phase range by using different widths (w) of rectangular slot investigated from 1.00 mm to 4.00 mm shows that 62.11 % imp rovement in phase range performance is achieved within the frequency variation of 10 GHz to 7.82 GHz which can be applied for tunable reflectarray antenna systems. The results obtained from this work show that by introducing variable rectangular slot on H-shaped patch reflectarray antenna the phase range is shown to be significantly improved which offers high potential for mu ltip le frequency antenna systems. Several parameters of reflectarray antenna such as reflection loss, reflection phase, bandwidth performance and static linear phase range are also discussed in this work.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Reflectarray antenna; rectangular slot; static linear phase range; spatial phase delay; tunability antenna; bandwidth.
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK6573-6595 Radar
Depositing User: M.Iqbal Zainal A
Date Deposited: 07 May 2012 01:01
Last Modified: 07 May 2012 01:01
URI: http://eprints.uthm.edu.my/id/eprint/2363
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