Skip to main content
Log in

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

Wireless Personal Communications Aims and scope Submit manuscript

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 20 . The simulated results are in good agreement with the measured results which verified its usage for broadband applications.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6
Fig. 7
Fig. 8
Fig. 9
Fig. 10

References

  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.

    Article  MathSciNet  MATH  Google Scholar 

  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.

    Article  Google Scholar 

  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.

    Article  Google Scholar 

  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.

    Article  Google Scholar 

  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.

    Article  Google Scholar 

  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.

    Article  Google Scholar 

  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.

    Article  Google Scholar 

  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.

    Article  Google Scholar 

  9. Chu, Q. X., & Du, S. (2009). A CPW-fed broadband circularly polarized square slot antenna. Microwave and Optical Technology Letters, 52, 409–412.

    Article  Google Scholar 

  10. Chang, T. N. (2011). Wideband circularly polarised antenna using two linked annular slots. Electronic Letters, 47, 737–739.

    Article  Google Scholar 

  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.

    Article  Google Scholar 

  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.

    Article  Google Scholar 

  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.

    Article  Google Scholar 

  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.

    Article  Google Scholar 

  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.

    Article  Google Scholar 

  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.

    Article  Google Scholar 

  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.

    Article  Google Scholar 

  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.

    Article  Google Scholar 

  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.

    Article  Google Scholar 

Download references

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.

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to Jugul Kishor.

Additional information

Publisher's Note

Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Kumar, A., Ansari, A.Q., Kanaujia, B.K. et al. Dual Circular Polarization with Reduced Mutual Coupling Among Two Orthogonally Placed CPW-Fed Microstrip Antennas for Broadband Applications. Wireless Pers Commun 107, 759–770 (2019). https://doi.org/10.1007/s11277-019-06298-x

Download citation

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s11277-019-06298-x

Keywords

Navigation