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Dual Circular Polarization with Reduced Mutual Coupling Among Two Orthogonally Placed CPW-Fed Microstrip Antennas for Broadband Applications

  • Amit Kumar
  • Abdul Quaiyum Ansari
  • Binod Kumar Kanaujia
  • Jugul KishorEmail author
Article
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Abstract

In this communication, a design of Coplanar Waveguide-fed Dual Circularly Polarized Broadband Antenna (CPW-DCPBA) has been proposed. Here, a square slot consists of two orthogonal T-shaped asymmetric microstrip antennas protruded from a signal line of CPW feed has been presented. The microstrip antennas are isolated with an inverted-L type grounded strip embedded at the left corner, followed by a square strip. A modified meandered line (MML) is embedded with the square strip to achieve circular polarization at the lower frequency. An SRR is placed at the back of the antenna to enhance the 3-dB axial ratio bandwidth (ARBW). Measurements of the fabricated antenna show an impedance bandwidth of 88% and the 3-dB ARBW of 75%, in which return loss is better than 10 dB and the isolation among the antennas are better than 15 dB. A peak gain of 3.1–5.6 dBi is achieved within the axial ratio band. The antenna is fabricated on FR-4 substrate of 60 mm × 60 mm × 1.6 mm with an antenna area of 0.359λ 0 2 . The simulated results are in good agreement with the measured results which verified its usage for broadband applications.

Keywords

Axial ratio bandwidth (ARBW) Axial ratio Circularly polarized (CP) Coplanar waveguide (CPW) Mutual coupling Slot antenna 

Notes

Acknowledgements

The authors acknowledge the Ministry of Electronics & Information Technology (MeitY), Government of India for their instrumental support through Visvesvaraya PhD Scheme for Electronics & IT under unique awardee number-VISPHD-MEITY-879.

References

  1. 1.
    Ellis, M. S., Zhao, Z., Wu, J., Ding, X., Nie, Z., & Liu, Q. H. (2016). A novel simple and compact microstrip-fed circularly polarized wide slot antenna with wide axial ratio bandwidth for C-band applications. IEEE Transaction on Antennas and Propagation, 64, 1552–1555.MathSciNetCrossRefzbMATHGoogle Scholar
  2. 2.
    Sze, J. Y., & Chang, C. C. (2008). Circularly polarized square slot antenna with a pair of inverted-L grounded strips. IEEE Antennas and Wireless Propagation Letters, 7, 149–151.CrossRefGoogle Scholar
  3. 3.
    Pourahmadazar, J., Ghobadi, C., Nourinia, J., Felegari, N., & Shirzad, H. (2011). Broadband CPW-fed circularly polarized square slot antenna with inverted-L strips for UWB applications. IEEE Antennas and Wireless Propagation Letters, 10, 369–372.CrossRefGoogle Scholar
  4. 4.
    Felegari, N., Nourinia, J., Ghobadi, C., & Pourahmadazar, J. (2011). Broadband CPW-fed circularly polarized square slot antenna with three inverted-L-shape grounded strips. IEEE Antennas and Wireless Propagation Letters, 10, 274–277.CrossRefGoogle Scholar
  5. 5.
    Sze, J. Y., Wang, J. C., & Chang, C. C. (2008). Axial-ratio bandwidth enhancement of asymmetric-CPW-fed circularly-polarised square slot antenna. Electronics Letters, 44, 1048–1049.CrossRefGoogle Scholar
  6. 6.
    Sze, J. Y., & Pan, S. P. (2011). Design of CPW-fed circularly polarized slot antenna with a miniature configuration. IEEE Antennas and Wireless Propagation Letters, 10, 1465–1468.CrossRefGoogle Scholar
  7. 7.
    Yeung, S. H., Man, K. F., & Chan, W. S. (2011). A bandwidth improved circular polarized slot antenna using a slot composed of multiple circular sectors. IEEE Transaction on Antennas and Propagation, 59, 3065–3070.CrossRefGoogle Scholar
  8. 8.
    Jan, J. Y., Pan, C. Y., Chiu, K. Y., & Chen, H. M. (2013). Broadband CPW-fed circularly-polarized slot antenna with an open slot. IEEE Transaction on Antennas and Propagation, 61, 1418–1422.CrossRefGoogle Scholar
  9. 9.
    Chu, Q. X., & Du, S. (2009). A CPW-fed broadband circularly polarized square slot antenna. Microwave and Optical Technology Letters, 52, 409–412.CrossRefGoogle Scholar
  10. 10.
    Chang, T. N. (2011). Wideband circularly polarised antenna using two linked annular slots. Electronic Letters, 47, 737–739.CrossRefGoogle Scholar
  11. 11.
    Sze, J. Y., Hsu, C. I. G., Chen, Z. W., & Chang, C. C. (2010). Broadband CPW-fed circularly polarized square slot antenna with lightening-shaped feedline and inverted-L grounded strips. IEEE Transaction on Antennas and Propagation, 58, 973–977.CrossRefGoogle Scholar
  12. 12.
    Kumar, A., Gautam, A. K., & Kanaujia, B. K. (2013). An annular-ring slot antenna for CP operation. Microwave and Optical Technology Letters, 55, 1418–1422.CrossRefGoogle Scholar
  13. 13.
    Liu, Q., Li, Y., Mo, Z., & Liu, Y. (2017). Compact broadband circularly-polarised directional universal GNSS antenna with symmetric radiation pattern and stable near-zenith coverage. IET Microwaves, Antennas and Propagation, 11, 657–663.CrossRefGoogle Scholar
  14. 14.
    Liu, H., Liu, Y., & Gong, S. (2017). Broadband microstrip-CPW fed circularly polarised slot antenna with inverted configuration for L-band applications. IET Microwaves, Antennas and Propagation, 11, 880–885.CrossRefGoogle Scholar
  15. 15.
    Arun, H., Sarma, A. K., Kanagasabai, M., Velan, S., Raviteja, C., & Alsath, M. G. N. (2014). Deployment of modified serpentine structure for mutual coupling reduction in MIMO antennas. IEEE Antennas and Wireless Propagation Letters, 13, 277–280.CrossRefGoogle Scholar
  16. 16.
    Lee, J. Y., Kim, S. H., & Jang, J. H. (2015). Reduction of mutual coupling in planar multiple antenna by using 1-D EBG and SRR structures. IEEE Transaction on Antennas and Propagation, 63, 4194–4198.CrossRefGoogle Scholar
  17. 17.
    Srivastava, G., & Kanaujia, B. K. (2015). Compact dual band-notched UWB MIMO antenna with shared radiator. Microwave and Optical Technology Letters, 57, 2886–2891.CrossRefGoogle Scholar
  18. 18.
    Srivastava, G., Kanaujia, B. K., & Paulus, R. (2015). UWB MIMO antenna with common radiator. International Journal of Microwave and Wireless Technologies, 9, 573–580.CrossRefGoogle Scholar
  19. 19.
    Kumar, A., Ansari, A. Q., Kanaujia, B. K., & Kishor, J. (2018). High isolation compact four-port MIMO antenna loaded with CSRR for multiband applications. Frequenz, 72(9–10), 415–427.CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Department of Electrical EngineeringFET, Jamia Millia IslamiaNew DelhiIndia
  2. 2.Department of Electrical and Electronics EngineeringDarbhanga College of EngineeringDarbhangaIndia
  3. 3.School of Computational and Integrative SciencesJawaharlal Nehru UniversityNew DelhiIndia
  4. 4.Department of Electronics and Communication EngineeringNIT DelhiNew DelhiIndia

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