Circularly polarized truncated corner square slot antenna for Ku-band applications

Document Type : Article


1 Electronics and Communication Engineering, Amity University Uttar-Pradesh, 201301, India

2 Electronics and Communication Engineering, Manipal University Jaipur, Rajasthan, 303007, India

3 Amity School of Applied Science, Amity University Jaipur, Rajasthan, 303007, India


The communication presents a novel microstrip line-fed compact square slot circular polarized antenna for Ku-band applications. The proposed square slot antenna with circular trimmed corners is fabricated on the FR-4 substrate with the defected ground on the opposite side of the patch. The axial ratio bandwidth (ARBW) is considerably enhanced by adding a shorting pin and the impedance bandwidth (IBW) is improved by etching pentagon- shaped slot in the defected ground. The antenna offers wide CP impedance bandwidth of 4.96GHz (13.6GHz-18.56GHz)) and simulated ARBW 4.85GHz (14.51-19.30GHz) and positive gain in the Ku-band. The presented antenna is appropriate for Ku-band applications.


1. Fuguo Z., Qi, L., and Steven, G., Circularly Polarized Antennas, Wiley-IEEE Press, United Kingdom (2013).
2. Balanis, C.A., Antenna Theory Analysis and Design, John Wiley & Sons, Inc., Hoboken, New Jersey (2005).
3. Kumar, G. and Ray, K., Broadband Microstrip Antennas, Artech House, Boston, London (2003).
4. Wong, K.-L. and Chiou, T.-W. "Broad-band singlepatch circularly polarized microstrip antenna with dual capacitively coupled feeds", IEEE Trans. Antennas Propag., 49(1), pp. 41-44 (2001).
5. Shekhawat, S. and Sharma, V. "Circularly polarized square patch microstrip antenna with Y-shaped slot for wi-max application", Eur. J Adva. Eng. Tech., 1(1), pp. 61-68 (2014).
6. Nasimuddin, A. and Arokiaswami, J. "Circularly polarized slot antennas with wideband performance", In 2015 Asia-Pacific Microwave Conference (APMC), Nanjing, China (2015).
7. Kim, S.-W., Kim, G.-S., and Choi, D.-Y. "CPW-Fed wideband circular polarized antenna for UHF RFID applications", Int. J of Antennas Propag., 12, pp. 1-7 (2017).
8. Sung, Y.J. "Circularly polarized Mercedes-Benz logo antenna for GPS applications", Microw. Opt. Technol. Lett., 58(10), pp. 2308-2311 (2016).
9. Sze, J.-Y. and Chen, W.-H. "Axial-ratio-bandwidth enhancement of a microstrip-line-fed circularly polarized annular-ring slot antenna", IEEE Trans. Antennas Propag, 59(7), pp. 2450-2456 (2011).
10. Rawat, S. and Sharma, K.K. "Stacked configuration of rectangular, and hexagonal patches with shorting pin for circularly polarized wideband performance", Cent. Eur. J. Eng., 4, pp. 20-26 (2013).
11. Wu, J., Ren, X., Wang, Z., et al. "Broadband polarized antenna with L-shaped strip feeding and shorting-pin loading", IEEE Antennas Wirel. Propag. Lett., 13, pp. 1733-1736 (2014).
12. Cao, W., Zhang, B., Yu, T., et al. "A single-feed broadband circular polarized rectangular microstrip antenna with chip-resistor loading", IEEE Antennas Wirel. Propag. Lett., 9, pp. 1065-1068 (2010).
13. Rezaeieh, S.A. Simsek S., and Pourahmadazar, J. "Design of a compact broadband circularly-polarized slot antenna for wireless applications", Microw. Opt. Technol. Lett., 55(1), pp. 413-418 (2013).
14. Jhajharia, T., Tiwari, V., Bhatnagar, D., et al. "A dual-band CP dual-orthogonal arms monopole antenna with slanting edge DGS for C-band wireless applications", AEU - Int. J. Electron. C., 84, pp. 251-257 (2018).
15. Yang, K.-P. and Wong, K.-L. "Dual-band circularlypolarized square microstrip antenna", IEEE Trans. Antennas Propag, 49(3), pp. 377-382 (2001).
16. Kushwaha, N. and Kumar, R. "Design of a wideband high gain antenna using FSS for circularly polarized applications", AEU - Int. J. Electron C., 70(9), pp. 1156-63 (2016).
17. Darimireddy, N.K., Reddy, R.R., and Prasad, A.M. "Asymmetric and symmetric modified bow-tie slotted circular patch antennas for circular polarization", ETRI Journal, 40(5), pp. 561-569 (2018).
18. Mashhadi, M., Komjani, N., Rejaei, B., et al. "Ferritebased wideband circularly polarized microstrip antenna design", ETRI Journal, 41(3), pp. 289-297 (2019).
19. Das, A., Mandal, D., and Kar, R. "An optimal radiation pattern synthesis and correction of mutually coupled circular dipole antenna array", Sci. Iran., 29(3), pp. 1455-1474 (2020).
20. Kumar, J., Basu, B., and Talukdar, F.A. "Modeling of a PIN diode RF switch for reconfigurable antenna application", Sci. Iran., 26(3), pp. 1714-1723 (2019).
21. Saini, R.K., Bakariya, P.S., and Kumar, P. "Coplanar waveguide fed dual-band dual-sense circular polarized square slot antenna", Int. J.RF Microw. C.E., 28(9), e21503 (2018).
22. Saini, R.K. and Dwari, S. "Dual-band dual-sense circularly polarized square slot antenna with changeable polarization", Microw. Opt. Technol. Lett., 59(4), pp. 902-907 (2017).
23. Anantha, B., Merugu L., and Rao, P.V.D.S. "Recon figurable corner truncated square microstrip patch antennas for wireless communication applications", IETE J. Res., 66(2), pp. 241-255 (2018).
24. Zhang, X. and Zhu, L. "High-gain circularly polarized microstrip patch antenna with loading of shorting pins", IEEE Trans. Antennas Propag., 64(6), pp. 2172-2178 (2016).
25. Patil, J.B. and Karia, D.C. "Comparative study of Roger and FR-4 based circularly polarized microstrip patch antenna with injecting a single set of shorting pins", In 9th International Conference on Computing Communication and Networking Technologies (ICCCNT), Bengaluru, India (2018).
26. CST Microwave Studio Simulator, Version 14.