CPW-fed circularly polarized dual-band dual-sense square slot monopole antenna

Reshmi Dhara; Vanka Janaki Rama Santhosh; Andi Vivek; Gajendra Singh Shekhawat; Sanoj Mahato

doi:10.3103/S0735272723110043

Authors

Reshmi Dhara National Institute of Technology Sikkim, Ravangal, India https://orcid.org/0000-0002-9790-6858
Vanka Janaki Rama Santhosh National Institute of Technology Sikkim, Ravangal, India https://orcid.org/0009-0001-4749-3573
Andi Vivek National Institute of Technology Sikkim, Ravangal, India
Gajendra Singh Shekhawat National Institute of Technology Sikkim, Ravangal, India
Sanoj Mahato National Institute of Technology Sikkim, Ravangal, India

DOI:

https://doi.org/10.3103/S0735272723110043

Keywords:

coplanar waveguide fed, CPW-fed, impedance bandwidth, axial ratio bandwidth, ARBW, IBW, left hand circular polarization, LHCP, right hand circular polarization, RHCP

Abstract

A circularly polarized dual-band dual-sense coplanar waveguide (CPW)-fed square slot antenna is designed in this paper. The designed antenna consists of two additional patches. A good impedance matching can be achieved by varying the sizes of patches. In this antenna, there are two impedance bandwidth (IBW) ranges of 2.65–5.43 and 5.77–6.19 GHz, and there are two axial ratio bandwidth (ARBW) ranges of 2.88–3.00 and 4.98–5.35 GHz within the IBW. The dual impedance band designed antenna is meant to operate at resonant frequencies of 4.04 and 5.98 GHz. It generates a dual circularly polarized band that operates at 2.94 and 5.2 GHz. They are left-hand circular polarization (LHCP) and right-hand circular polarization (RHCP). Low-cost FR4_epoxy is the substrate material used with dielectric constant of ε_r = 4.4. The antenna is designed using the Ansoft HFSS software. The main parameters, including reflection coefficient, ARBW, gain, radiation pattern, and radiation efficiency, have been measured, simulated, and analyzed. The lower ARBW band of a proposed antenna can be suitable for some S-band wireless communication applications, and a higher ARBW band can be ideal for WLAN applications.

Author Biography

Reshmi Dhara, National Institute of Technology Sikkim, Ravangal

Assistant Professor, Dept of Electronics and Communication Engineering

References

C. A. Balanis, Antenna Theory: Analysis and Design. New Jersey: Wiley, 2016, uri: https://www.wiley.com/en-us/Antenna+Theory%3A+Analysis+and+Design%2C+4th+Edition-p-9781118642061.

R. Dhara, “Dual band dual polarized planar monopole antenna for L, and C band applications,” in International Conference on Emerging Technologies: AI, IoT, and CPS for Science & Technology Applications, 2021.

R. K. Saini, P. S. Bakariya, P. Kumar, “Coplanar waveguide fed dual‐band dual‐sense circular polarized square slot antenna,” Int. J. RF Microw. Comput. Eng., vol. 28, no. 9, 2018, doi: https://doi.org/10.1002/mmce.21503.

Y. Xu, L. Zhu, N.-W. Liu, “Design approach for a dual-band circularly polarized slot antenna with flexible frequency ratio and similar in-band gain,” IEEE Antennas Wirel. Propag. Lett., vol. 21, no. 5, pp. 1037–1041, 2022, doi: https://doi.org/10.1109/LAWP.2022.3156067.

R. Dhara, S. Yadav, M. M. Sharma, S. K. Jana, M. C. Govil, “A circularly polarized quad-band annular ring antenna with asymmetric ground plane using theory of characteristic modes,” Prog. Electromagn. Res. M, vol. 100, pp. 51–68, 2021, doi: https://doi.org/10.2528/PIERM20102006.

A. Birwal, S. Singh, B. K. Kanaujia, S. Kumar, “CPW-fed ultra-wideband dual-sense circularly polarized slot antenna,” Prog. Electromagn. Res. C, vol. 94, pp. 219–231, 2019, doi: https://doi.org/10.2528/PIERC19052005.

C. Chen, E. K. N. Yung, “Dual-band dual-sense circularly-polarized CPW-fed slot antenna with two spiral slots loaded,” IEEE Trans. Antennas Propag., vol. 57, no. 6, pp. 1829–1833, 2009, doi: https://doi.org/10.1109/TAP.2009.2019990.

R. Dhara, T. Kundu, “Compact dual-band circularly polarized inverted y-shaped printed monopole antenna with edge ground,” Radioelectron. Commun. Syst., vol. 64, no. 3, pp. 125–139, 2021, doi: https://doi.org/10.3103/S073527272103002X.

R. Dhara, S. Yadav, S. Mahato, M. M. Sharma, M. C. Govil, “An antipodal antenna with improved axial ratio bandwidth,” IETE J. Res., vol. 70, no. 1, pp. 144–152, 2024, doi: https://doi.org/10.1080/03772063.2022.2130830.

R. Dhara, “Design of a miniaturized CPW fed Z-shaped monopole antenna using theory of characteristics modes for bandwidth enhancement,” Sādhanā, vol. 46, no. 2, p. 87, 2021, doi: https://doi.org/10.1007/s12046-021-01610-7.

Y. Xu, L. Zhu, N.-W. Liu, M. Li, “A dual-band dual-circularly-polarized slot antenna with stable in-band gain and reduced frequency ratio under triple resonance,” IEEE Trans. Antennas Propag., vol. 70, no. 11, pp. 10199–10206, 2022, doi: https://doi.org/10.1109/TAP.2022.3191133.

R. Dhara, T. Kundu, M. Sanoj, “Circularly polarized hexa-band planar slot antenna for WLAN and wireless communication application,” Radioelectron. Commun. Syst., vol. 65, no. 1, pp. 48–59, 2022, doi: https://doi.org/10.3103/S0735272722010058.

R. Dhara, T. Kundu, “Wideband circularly polarized P-shaped monopole antenna for C-band application,” Radioelectron. Commun. Syst., vol. 65, no. 3, pp. 129–141, 2022, doi: https://doi.org/10.3103/S0735272722030025.

M. Rezvani, Y. Zehforoosh, P. Beigi, “Circularly-polarized and high-efficiency microstrip antenna with C-shaped stub for WLAN and WiMAX applications,” Radioelectron. Commun. Syst., vol. 62, no. 11, pp. 604–608, 2019, doi: https://doi.org/10.3103/S0735272719110062.