volume | PIER Journals

2013-10-31

Design and Analysis of Double U Slot Loaded Dual Frequency Microstrip Antenna

Sathiyamoorthy Murugan,

Prof. Sathiyamoorthy Murugan

ECE Department

K.L.N.College of Engineering

India

Homepage

Elamurugan Sathish Kumar,

Dr. Elamurugan Sathish Kumar

ECE Department

K.L.N. College of Engineering

India

Homepage

Vayanaperumal Rajamani

Prof. Vayanaperumal Rajamani

Indra Ganesan College of Engineering

India

Homepage

Progress In Electromagnetics Research C, Vol. 45, 101-112, 2013

doi:10.2528/PIERC13090502 | Google Scholar

Abstract

The objective of the work is to design a dual frequency microstrip antenna for small frequency ratio applications. The proposed geometry comprised of suspended truncated circular microstrip antenna, with double U slot etched on the radiating element. The design parameters are radius of circular patch, width and length of slot, height of air gap. The proposed design of the antenna has enough freedom to control the dual design frequencies/frequency ratio by varying the above design parameters. FR4 substrate with dielectric constant 4.4 is chosen for design and fabrication. The dual design frequencies are 1.93 GHz and 2.17 GHz, covering the applications such as WCDMA, 3G mobile data terminals, and 4G LTE applications. The antenna is fed by a 50 Ω coaxial probe. The simulation of the antenna is performed using ANSOFT HFSS and analyzed for return loss, VSWR and radiation pattern. The antenna is fabricated and tested for impedance matching and radiation characteristics. The simulation and experimental results show that the antenna worked well at desired dual frequencies. The impedance matching is well at both frequencies (VSWR <2). Though, the measured radiation pattern is unidirectional in co-polarisation, nearly omnidirectional (butterfly) pattern is obtained in cross-polarisation and gain is about 5.54 dB at 1.93 GHz and 8.23 dB at 2.17 GHz. Also, the design is well suited for small frequency ratio dual frequency applications.

Download Full Article (601) View Full Article volume

Citation

Copy Export

Sathiyamoorthy Murugan, Elamurugan Sathish Kumar, and Vayanaperumal Rajamani, "Design and Analysis of Double U Slot Loaded Dual Frequency Microstrip Antenna," Progress In Electromagnetics Research C, Vol. 45, 101-112, 2013.
doi:10.2528/PIERC13090502

References

1. Krishna, D. D., M. Gopikrishna, C. K. Aanandan, P. Mohanan, and K. Vasudevan, "Compact dual band slot loaded circular microstrip antenna with a superstrate," Progress In Electromagnetics Research, Vol. 83, 245-255, 2008.
doi:10.2528/PIER08052201 Google Scholar

2. Maci. , S. and B. Gentili, "Dual frequency patch antennas," IEEE Antennas and Propagation Magazine, Vol. 39, No. 6, 13-20, 1997.
doi:10.1109/74.646798 Google Scholar

3. Lee, K. F., K. M. Luk, K. M. Mak, and S. L. S. Yang, "On the use of U-slots in the design of dual-and triple-band patch antennas," IEEE Antennas and Propagation Magazine, Vol. 53, No. 3, 60-73, 2011.
doi:10.1109/MAP.2011.6028422 Google Scholar

4. Ansari, J. A., A. Mishra, and B. R. Vishwakarma, "Half U-slot loaded semicircular disk patch antenna for GSM mobile phone and optical communications," Progress In Electromagnetics Research C, Vol. 18, 31-45, 2011. Google Scholar

5. Wu, H.-J., J.-F. Xu, X. Hua, S.-L. Zhang, and Y. Wang, "Novel wideband microstrip antenna array with double U-slots," PIERS Proceedings, 605-607, Sep. 2011. Google Scholar

6. Khodaei, G. F., J. Nourinia, and C. Ghobadi, "A practical miniaturized U-slot patch antenna with enhanced bandwidth," Progress In Electromagnetics Research B, Vol. 3, 47-62, 2008.
doi:10.2528/PIERB07112201 Google Scholar

7. Lam, K. Y., K.-M. Luk, K. F. Lee, H. Wong, and K. B. Ng, "Small circularly polarized U-slot wideband patch antenna," IEEE Antennas and Wireless Propagation Letters, Vol. 10, 87-90, 2011. Google Scholar

8. Mishra, A., P. Singh, N. P. Yadav, J. A. Ansari, and B. R. Vishvakarama, "Compact shorted microstrip patch antenna for dual band operation," Progress In Electromagnetics Research C, Vol. 9, 171-192, 2009.
doi:10.2528/PIERC09071007 Google Scholar

9. Yang, S.-L. S., A. A. Kishk, and K.-F. Lee, "Frequency reconfigurable U-slot microstrip patch antenna," IEEE Antennas and Wireless Propagation Letters, Vol. 7, 127-129, 2008.
doi:10.1109/LAWP.2008.921330 Google Scholar

10. Singh, A. K. and M. K. Meshram, "Shorting pin loaded dual band compact rectangular microstrip patch antenna," Int. Journal of Electronics, Vol. 94, 237-250, 2007.
doi:10.1080/00207210601108166 Google Scholar

11. Vishvakarma, S. and B. R. Vishvakarma, "Analysis of inclined slot loaded patch for dual band operation," Microwave Opt. Technology Lett., Vol. 48, No. 12, 2436-2441, 2006.
doi:10.1002/mop.21965 Google Scholar

12. Balanis, C. A., Antenna Theory Analysis and Design, 3rd Ed., John Wiley, 2011.

13. Ray, K. P. and G. Kumar, Broadband Microstrip Antennas, Artech House, 2003.

14. Bird, T. S., "Definition and the misuse of return loss," IEEE Antenna and Propagation Magazine, Vol. 51, No. 2, 166-167, Apr. 2009.
doi:10.1109/MAP.2009.5162049 Google Scholar