Gain enhancement for circularly polarized double layered printed hemispherical helical antenna arrays

Latef, T.A. and Khamas, S. and Reza, A.W. (2015) Gain enhancement for circularly polarized double layered printed hemispherical helical antenna arrays. Journal of Electromagnetic Waves and Applications, 29 (10). pp. 1342-1353. ISSN 0920-5071, DOI https://doi.org/10.1080/09205071.2015.1044126.

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Abstract

To improve the performance of mobile satellite communications, such as for INMARSAT-M mobile vehicles, antenna with high gain and circular polarization over a wide angular range is important. With only 3-elements circularly polarized double-layered printed hemispherical helical antenna arrays that incorporated with parasitic helical wire in the structure, the array can produce significant improvement where it has been demonstrated that the gain and the 3dB axial ratio (AR) bandwidth and beam width can be increased by properly adjusting the relative angular displacement (1), (2), (3), and the inter-element spacing d(x) and d(y). Experimental and theoretical results demonstrate that the array can produce a gain of 11dBi, the 3dB AR bandwidth of more than 11 with AR beam width of similar to 136 degrees, and the mutual couplings between each element less than -23dB at required 3dB AR bandwidth frequency range. The antenna design is performed in computer simulation technology and verified by measurement.

Item Type:	Article
Funders:	University of Malaya Research Fund Assistance (BKP) BK045-2014
Additional Information:	ISI Document Delivery No.: CL5TC Times Cited: 0 Cited Reference Count: 18 Cited References: Anonymous, 2001, CST REF MAN APPELHAN.J, 1972, IEEE T ANTENN PROPAG, VAP20, P516, DOI 10.1109/TAP.1972.1140261 Bai Q, 2013, IEEE T ANTENN PROPAG, V61, P4567, DOI 10.1109/TAP.2013.2269133 Chahat N, 2013, IEEE T ANTENN PROPAG, V61, P1816, DOI 10.1109/TAP.2012.2232633 Hui HT., 2005, IET ANTENNAS WIRELES, V152, P367 Hui HT, 2004, IEEE T ANTENN PROPAG, V52, P346, DOI 10.1109/TAP.2003.822410 IWASAKI H, 1995, IEEE T ANTENN PROPAG, V43, P1156, DOI 10.1109/8.467655 IWASAKI H, 1995, IEEE T ANTENN PROPAG, V43, P604, DOI 10.1109/8.387176 KOREKADO T, 1991, IEEE T ANTENN PROPAG, V39, P1112, DOI 10.1109/8.97344 Latef TA, 2014, FREQUENZ, V68, P297, DOI 10.1515/freq-2013-0149 Latef TA, 2011, IEEE T ANTENN PROPAG, V59, P4831, DOI 10.1109/TAP.2011.2165491 Li X, 2012, J ELECTROMAGNET WAVE, V24, P951 Li XQ, 2010, IEEE ANTENN WIREL PR, V9, P708, DOI 10.1109/LAWP.2010.2059371 Liu CR, 2013, IEEE T ANTENN PROPAG, V61, P1475, DOI 10.1109/TAP.2012.2230235 Liu Y, 2012, J ELECTROMAGNET WAVE, V24, P2155 NAKANO H, 1992, IEEE T ANTENN PROPAG, V40, P279, DOI 10.1109/8.135470 NAKANO H, 1984, IEEE T ANTENN PROPAG, V32, P836, DOI 10.1109/TAP.1984.1143417 SHOAMANESH A, 1979, IEEE T ANTENN PROPAG, V27, P711, DOI 10.1109/TAP.1979.1142168 Latef, Tarik Abdul Khamas, Salam Reza, Ahmed Wasif Engineering, Faculty /I-7935-2015 Engineering, Faculty /0000-0002-4848-7052 University of Malaya Research Fund Assistance (BKP) BK045-2014 This research work is supported by the University of Malaya Research Fund Assistance (BKP) BK045-2014. 0 TAYLOR & FRANCIS LTD ABINGDON J ELECTROMAGNET WAVE
Uncontrolled Keywords:	Antenna array, hemispherical helical antenna, circular polarization, design, loops,
Subjects:	T Technology > T Technology (General) T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions:	Faculty of Engineering
Depositing User:	Mr Jenal S
Date Deposited:	04 Apr 2016 01:13
Last Modified:	04 Apr 2016 01:13
URI:	http://eprints.um.edu.my/id/eprint/15729

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