Vol. 38
Latest Volume
All Volumes
PIERC 142 [2024] PIERC 141 [2024] PIERC 140 [2024] PIERC 139 [2024] PIERC 138 [2023] PIERC 137 [2023] PIERC 136 [2023] PIERC 135 [2023] PIERC 134 [2023] PIERC 133 [2023] PIERC 132 [2023] PIERC 131 [2023] PIERC 130 [2023] PIERC 129 [2023] PIERC 128 [2023] PIERC 127 [2022] PIERC 126 [2022] PIERC 125 [2022] PIERC 124 [2022] PIERC 123 [2022] PIERC 122 [2022] PIERC 121 [2022] PIERC 120 [2022] PIERC 119 [2022] PIERC 118 [2022] PIERC 117 [2021] PIERC 116 [2021] PIERC 115 [2021] PIERC 114 [2021] PIERC 113 [2021] PIERC 112 [2021] PIERC 111 [2021] PIERC 110 [2021] PIERC 109 [2021] PIERC 108 [2021] PIERC 107 [2021] PIERC 106 [2020] PIERC 105 [2020] PIERC 104 [2020] PIERC 103 [2020] PIERC 102 [2020] PIERC 101 [2020] PIERC 100 [2020] PIERC 99 [2020] PIERC 98 [2020] PIERC 97 [2019] PIERC 96 [2019] PIERC 95 [2019] PIERC 94 [2019] PIERC 93 [2019] PIERC 92 [2019] PIERC 91 [2019] PIERC 90 [2019] PIERC 89 [2019] PIERC 88 [2018] PIERC 87 [2018] PIERC 86 [2018] PIERC 85 [2018] PIERC 84 [2018] PIERC 83 [2018] PIERC 82 [2018] PIERC 81 [2018] PIERC 80 [2018] PIERC 79 [2017] PIERC 78 [2017] PIERC 77 [2017] PIERC 76 [2017] PIERC 75 [2017] PIERC 74 [2017] PIERC 73 [2017] PIERC 72 [2017] PIERC 71 [2017] PIERC 70 [2016] PIERC 69 [2016] PIERC 68 [2016] PIERC 67 [2016] PIERC 66 [2016] PIERC 65 [2016] PIERC 64 [2016] PIERC 63 [2016] PIERC 62 [2016] PIERC 61 [2016] PIERC 60 [2015] PIERC 59 [2015] PIERC 58 [2015] PIERC 57 [2015] PIERC 56 [2015] PIERC 55 [2014] PIERC 54 [2014] PIERC 53 [2014] PIERC 52 [2014] PIERC 51 [2014] PIERC 50 [2014] PIERC 49 [2014] PIERC 48 [2014] PIERC 47 [2014] PIERC 46 [2014] PIERC 45 [2013] PIERC 44 [2013] PIERC 43 [2013] PIERC 42 [2013] PIERC 41 [2013] PIERC 40 [2013] PIERC 39 [2013] PIERC 38 [2013] PIERC 37 [2013] PIERC 36 [2013] PIERC 35 [2013] PIERC 34 [2013] PIERC 33 [2012] PIERC 32 [2012] PIERC 31 [2012] PIERC 30 [2012] PIERC 29 [2012] PIERC 28 [2012] PIERC 27 [2012] PIERC 26 [2012] PIERC 25 [2012] PIERC 24 [2011] PIERC 23 [2011] PIERC 22 [2011] PIERC 21 [2011] PIERC 20 [2011] PIERC 19 [2011] PIERC 18 [2011] PIERC 17 [2010] PIERC 16 [2010] PIERC 15 [2010] PIERC 14 [2010] PIERC 13 [2010] PIERC 12 [2010] PIERC 11 [2009] PIERC 10 [2009] PIERC 9 [2009] PIERC 8 [2009] PIERC 7 [2009] PIERC 6 [2009] PIERC 5 [2008] PIERC 4 [2008] PIERC 3 [2008] PIERC 2 [2008] PIERC 1 [2008]
2013-03-05
Modified Square Slot Antennas for Broadband Circular Polarization
By
Progress In Electromagnetics Research C, Vol. 38, 1-14, 2013
Abstract
Square slot antennas with modified edges for broadband circular polarization are presented. Slots with only stubs or notches are studied and it is found that the axial ratio (AR) bandwidth is quite sensitive to the perturbations of the stubs and notches. To further enhance the AR bandwidth, slot antennas with combination of stubs and notches are proposed and wide 3-dB AR bandwidth of 15.5% (2.45-2.86 GHz) is obtained. By placing a conducting reflector at the rear of the slot, another modified square slot antenna is designed for practical applications, which achieves a 3-dB AR bandwidth of 6.5% (2.38-2.54 GHz) and peak gain of 8.7 dBic. Agreement between simulated and measured results is satisfactory.
Citation
Jianjun Wu, Xueshi Ren, Zhaoxing Li, and Ying-Zeng Yin, "Modified Square Slot Antennas for Broadband Circular Polarization," Progress In Electromagnetics Research C, Vol. 38, 1-14, 2013.
doi:10.2528/PIERC13020105
References

1. Deshpande, M. and N. Das, "Rectangular microstrip antenna for circular polarization," IEEE Trans. Antennas and Propag., Vol. 34, No. 5, 744-746, May 1986.
doi:10.1109/TAP.1986.1143886

2. Wang, Z., S. Fang, Q. Wang, and H. Liu, "An ANN-based synthesis model for the single-feed circularly-polarized square microstrip antenna with truncated corners," IEEE Trans. Antennas and Propag., Vol. 60, No. 12, 5989-5992, Dec. 2012.
doi:10.1109/TAP.2012.2214195

3. Wong, K. L. and Y. F. Lin, "Circularly polarized microstrip antenna with a tuning stub," Electron. Lett., Vol. 34, 831-832, Apr. 30, 1998.

4. Nasimuddin, Z., N. Chen, and X. Qing, "A compact circularly polarized cross-shape slotted microstrip antenna," IEEE Trans. Antennas and Propag., Vol. 60, No. 3, 1584-1588, Mar. 2012.
doi:10.1109/TAP.2011.2180334

5. Kumar, G. and K. Ray, Broadband Microstrip Antennas, Artech House Inc., 2003.

6. Ramirez, R.R., F. De Flaviis, and N. G. Alexopoulos, "Single-feed circularly polarized microstrip ring antenna and arrays," IEEE Trans. Antennas and Propag., Vol. 48, No. 7, 1040-1047, Jul. 2000.
doi:10.1109/8.876322

7. Sorbello, R. M. and A. I. Zaghloul, "Wideband, high-efficiency, circularly polarized slot elements," IEEE Antennas Propogat. Int. Symp. Dig., Vol. 3, 1473-1475, Jun. 1989.
doi:10.1109/APS.1989.134997

8. Tseng, L.-Y. and T.-Y. Han, "Circular polarization square-slot antenna for dual-band operation," Microwave and Optical Technology Letters, Vol. 50, No. 9, 2307-2309, Sep. 2008.
doi:10.1002/mop.23633

9. Wang, C.-C., T.-Y. Lee, and J.-S. Row, "A simple design for circularly polarized ring-slot antennas," Microwave and Optical Technology Letters, Vol. 53, No. 10, 2262-2265, Oct. 2011.
doi:10.1002/mop.26285

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

11. 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 and Propag., Vol. 59, No. 7, 2450-2456, Jul. 2011.
doi:10.1109/TAP.2011.2152314

12. Liao, W. and Q.-X. Chu, "CPW-fed square slot antenna with lightening-shaped feedline for broadband circularly polarized radiation," Progress In Electromagnetics Research Letters, Vol. 18, 61-69, 2010.
doi:10.2528/PIERL10080101

13. Sung, Y., "Bandwidth enhancement of a microstrip line-fed printed wide-slot antenna with a parasitic center patch," IEEE Trans. Antennas and Propag., Vol. 60, No. 4, 1712-1716, Apr. 2012.
doi:10.1109/TAP.2012.2186224

14. Wong, K.-L., J.-Y. Wu, and C.-K. Wu, "A circularly polarized patch-loaded square-slot antenna," Microwave and Optical Technology Letters, Vol. 23, No. 6, 363-365, Dec. 1999.
doi:10.1002/(SICI)1098-2760(19991220)23:6<363::AID-MOP13>3.0.CO;2-X

15. Chou, C. C., K. H. Lin, and H. L. Su, "Broadband circularly polarized cross-patch-loaded square slot antenna," Electron. Lett., Vol. 43, No. 9, 485-486, Apr. 2007.
doi:10.1049/el:20070189

16. Bao, X. and M. J. Ammann, "Dual-frequency dual-sense circularly-polarized slot antenna fed by microstrip line," IEEE Trans. Antennas and Propag., Vol. 56, No. 3, 645-649, Mar. 2008.
doi:10.1109/TAP.2008.916961

17. Sze, J.-Y. and C.-C. Chang, "Circularly polarized square slot antenna with a pair of inverted-L grounded strips," IEEE Antennas Wireless Propag. Lett., Vol. 7, 149-151, 2008.
doi:10.1109/LAWP.2008.921341

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