PIER C
 
Progress In Electromagnetics Research C
ISSN: 1937-8718
Home | Search | Notification | Authors | Submission | PIERS Home | EM Academy
Home > Vol. 70 > pp. 99-109

AXIAL RATIO ENHANCEMENT OF EQUILATERAL TRIANGULAR-RING SLOT ANTENNA USING COUPLED DIAGONAL LINE SLOTS

By A. Awaludin, J. T. Sri Sumantyo, C. E. Santosa, and M. Z. Baharuddin

Full Article PDF (439 KB)

Abstract:
Wideband circularly polarized antenna is required for many satellite applications. Circularly polarized (CP) Equilateral Triangular-Ring Slot (ETRS) antenna has narrow 3-dB axial ratio bandwidth (ARBW) compared to its impedance bandwidth. Two diagonal line slots were introduced to ETRS for enhancing its 3-dB ARBW. The diagonal line slots were inserted on the left and right side of ETRS. Lengths of the left and right line slots correspond to the lowest and highest frequencies of ETRS antenna 3-dB ARBW, respectively. Both diagonal line slots have successfully improved 3-dB ARBW of ETRS antenna by achieving 680 MHz or 37% fractional bandwidth. Measured results of x-z and y-z planes of radiation patterns also confirm that the antenna has bidirectional radiation and presents good CP performance within its 3-dB ARBW. ETRS antenna RHCP gain is also improved thanks to the diagonal line slots insertion.

Citation:
A. Awaludin, J. T. Sri Sumantyo, C. E. Santosa, and M. Z. Baharuddin, "Axial ratio enhancement of equilateral triangular-ring slot antenna using coupled diagonal line slots," Progress In Electromagnetics Research C, Vol. 70, 99-109, 2016.
doi:10.2528/PIERC16102508

References:
1. Sze, J. Y., C.-I. G. Hsu, Z.-W. Chen, and C.-C. Chang, "Broadband CPW-fed circularly polarized square slot antenna with lightening-shaped feed-line and inverted-L grounded strips," IEEE Trans. Antennas Propag., Vol. 58, No. 3, 973-977, 2010.
doi:10.1109/TAP.2009.2039335

2. Nasimuddin, Z.-N. and X. Qing, "Symmetric-aperture antenna for broadband circular polarization," IEEE Trans. Antennas Propag., Vol. 59, No. 10, 3932-3936, 2011.
doi:10.1109/TAP.2011.2163757

3. Row, J. S., "The design of a squarer-ring slot antenna for circular polarization," IEEE Trans. Antennas Propag., Vol. 53, No. 6, 1967-1972, 2005.
doi:10.1109/TAP.2005.848482

4. Wong, K. L., C. C. Huang, and W. S. Chen, "Printed ring slot antenna for circular polarization," IEEE Trans. Antennas Propag., Vol. 50, No. 1, 75-77, 2002.
doi:10.1109/8.992564

5. Sze, J. Y. and W. H. Chen, "Axial-ratio-bandwidth enhancement of a microstrip-line-fed circularly polarized annular-ring slot antenna," IEEE Trans. Antennas Propag., Vol. 59, No. 7, 2450-2456, 2011.
doi:10.1109/TAP.2011.2152314

6. Wong, K. L., J. Y. Wu, and C. K. Wu, "A circular-polarized patch loaded square slot antenna," Microw. Opt. Technol. Lett., Vol. 23, No. 6, 363-365, 1999.
doi:10.1002/(SICI)1098-2760(19991220)23:6<363::AID-MOP13>3.0.CO;2-X

7. Tseng, L. Y. and T. Y. Han, "Microstrip-fed circular slot antenna for circular polarization," Microw. Opt. Technol. Lett., Vol. 50, No. 4, 1056-1058, 2008.
doi:10.1002/mop.23290

8. Han, T. Y., Y. Y. Chu, L. Y. Tseng, and J. S. Row, "Unidirectional circularly-polarized slot antennas with broadband operation," IEEE Trans. Antennas Propag., Vol. 56, No. 6, 1777-1780, 2008.
doi:10.1109/TAP.2008.923380

9. Chang, T. N. and J. M. Lin, "Circularly polarized antenna having two linked slot-rings," IEEE Trans. Antennas Propag., Vol. 59, No. 8, 3057-3060, 2011.
doi:10.1109/TAP.2011.2158956

10. Zhang, J. L. and X. Q. Yang, "Integrated compact circular polarization annular ring slot antenna design for RFID reader," Progress In Electromagnetics Research Letters, Vol. 39, 133-140, 2013.
doi:10.2528/PIERL13031110

11. Qing, X. M. and Y. W. M. Chia, "Circularly polarized circular ring slot antenna fed by stripline hybrid coupler," Electronics Letters, Vol. 35, No. 25, 2154-2155, 1999.
doi:10.1049/el:19991474

12. Sharma, C. and K. C. Gupta, "Analysis and optimized design of single feed circularly polarized microstrip antennas," IEEE Trans. Antennas Propag., Vol. 31, No. 6, 949-955, 1983.
doi:10.1109/TAP.1983.1143162

13. Lu, H. J., C. L. Tang, and K. L.Wong, "Single-feed slotted equilateral-triangular microstrip antenna for circular polarization," IEEE Trans. Antennas Propag., Vol. 47, No. 7, 1174-1178, 1999.
doi:10.1109/8.785749

14. Aziz, M. Z. A. A., N. A. D. A. Mufit, M. K. A. Rahim, and M. R. Kamaruddin, "Design Xcircular polarized with slant rectangular slot by using single port," 2012 International Symposium on Antennas and Propagation, 555-558, 2012.

15. Rafi, G. Z. and L. Shafai, "Low-cross-polarized wideband V-slot microstrip antenna," Microwave and Optical Technology Letters, Vol. 43, No. 1, 44-47, 2004.
doi:10.1002/mop.20370

16. Ortego, I. M., M. S. Perez, M. Zhang, J. Hirokawa, and M. Ando, "Mutual coupling in longitudinal arrays of compound slots," Progress In Electromagnetics Research B, Vol. 46, No. 46, 59-78, 2013.
doi:10.2528/PIERB12100803

17. Behdad, N. and K. Sarabandi, "A wide-band slot antenna design employing a fictitious shot circuit concept," IEEE Trans. Antennas Propag., Vol. 53, No. 1, 475-482, 2005.
doi:10.1109/TAP.2004.838778

18. Mazzarella, G. and G. Panariello, "On the evaluation of mutual coupling between slots," IEEE Trans. Antennas Propag., Vol. 35, No. 11, 1289-1293, 1987.
doi:10.1109/TAP.1987.1144018


© Copyright 2010 EMW Publishing. All Rights Reserved