Miniaturized Ultra Wideband Microstrip Antenna Based on a Modified Koch Snowflake Geometry for Wireless Applications
Hafid Tizyi,
Abdellah Najid,
Fatima Riouch,
Abdelwahed Tribak,
Angel Mediavilla
Issue:
Volume 3, Issue 6, November 2015
Pages:
38-42
Received:
6 September 2015
Accepted:
22 September 2015
Published:
15 October 2015
DOI:
10.11648/j.ajea.20150306.11
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Abstract: This paper presents a compact micro-strip patch antenna for ultra wideband (UWB) applications using a Koch Snowflake fractal radiating antenna. The antenna supports two ultra widebands. For the lower band, a good impedance bandwidth of 6.55GHz has been achieved from 3.4892GHz to 10.0392GHz. While the upper band covers 5.4976GHz (from 10.9013GHz to 16.3989GHz). It is fed by a 50Ω micro-strip transmission line with an overall size of 30x27 mm. The simulation was performed by Computer Simulation Technology (CST) MICROWAVE STUDIO software, and compared with High Frequency Structural Simulator (HFSS) software. The results show that the proposed antenna has interesting characteristics for UWB applications.
Abstract: This paper presents a compact micro-strip patch antenna for ultra wideband (UWB) applications using a Koch Snowflake fractal radiating antenna. The antenna supports two ultra widebands. For the lower band, a good impedance bandwidth of 6.55GHz has been achieved from 3.4892GHz to 10.0392GHz. While the upper band covers 5.4976GHz (from 10.9013GHz to ...
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New Compact Pentagonal Microstrip Patch Antenna for Wireless Communications Applications
Raad H. Thaher,
Saif Nadhim Alsaidy
Issue:
Volume 3, Issue 6, November 2015
Pages:
53-64
Received:
15 November 2015
Accepted:
22 November 2015
Published:
10 December 2015
DOI:
10.11648/j.ajea.20150306.13
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Abstract: In this paper, a study of new design of pentagonal microstrip patch antenna for wireless communications applications. The proposed antenna has regular pentagonal patch (provide dual bands (2.6-7.5) GHz, (8.7-20) GHz) which is modified to irregular shape with the same area to obtain better characteristics from bandwidth and gain point of view and offer gain vary from -3dBi to 3dBi. It is noted that the final pass band (i.e. S11≤-10dB) is (2.6-20) GHz. The gain is improved by making slots in the irregular pentagonal patch to be in the range between (-0.95dBi - 4.4dBi). Both the irregular pentagonal antenna without slots and with slots are fabricated and tested practically using vector network analyzer (VNA) for the reflection coefficients (S11), voltage standing wave ratio (VSWR) and input impedance. Each of these antennas regular pentagonal patch, irregular pentagonal patch without slots and with slots are printed on FR4 having relative dielectric constant εr=4.3, and loss tangent (tanδ) of 0.02. It is printed on (33 x 30 x 1.6) mm3 substrate. It is found that the simulation results and the measured results agree mostly, the small error is attributed to the fabrication error. It is concluded that the irregular pentagonal antenna with slots provide better characteristics.
Abstract: In this paper, a study of new design of pentagonal microstrip patch antenna for wireless communications applications. The proposed antenna has regular pentagonal patch (provide dual bands (2.6-7.5) GHz, (8.7-20) GHz) which is modified to irregular shape with the same area to obtain better characteristics from bandwidth and gain point of view and of...
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, K)- modules as £- modules to the Lie groups SL(2, R), SU(2), SO(4), U(4, R), SU(2, 2), SO(4, R), SU(p, q), and Sp(n, K), the evaluating of integrals on equivariant and invariant holomorphic vector bundles under the action of these groups, are created and developed electromagnetic models of the space-time with...
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