Share This Article:

Aspect Ratio: A Major Controlling Factor of Radiation Characteristics of Microstrip Antenna

Abstract Full-Text HTML Download Download as PDF (Size:491KB) PP. 452-457
DOI: 10.4236/jemaa.2011.311072    4,096 Downloads   7,258 Views   Citations

ABSTRACT

The effect of aspect ratio (width-to-length ratio) on overall radiation characteristics of a rectangular microstrip patch antenna is theoretically investigated with a view to develop a concrete physical insight in to the phenomenon. The detailed variation of co polarized and cross polarized radiation performance as a function of aspect ratio is thoroughly presented. The gain enhancement of a microstrip patch antenna along with a radical variation of cross polarized field radiation with aspect ratio is obtained. Indeed the conjecture of occurring different fringing fields with different aspect ratio is employed to theoretically estimate the effective size of a rectangular patch, and hence to determine the quantitative change in the gain value. Close agreement amongst the theory and simulations justifies the conjecture indicating a concrete physical insight in to the fact. The aspect ratio for which the cross polarized field radiation is minimum for a particular patch is also presented and justified quantitatively.

Conflicts of Interest

The authors declare no conflicts of interest.

Cite this paper

S. Abbas, S. Paul, J. Sen, P. Gupta, K. Malakar, S. Chattopadhyay and S. Banerjee, "Aspect Ratio: A Major Controlling Factor of Radiation Characteristics of Microstrip Antenna," Journal of Electromagnetic Analysis and Applications, Vol. 3 No. 11, 2011, pp. 452-457. doi: 10.4236/jemaa.2011.311072.

References

[1] K. F. Lee, K. M. Luk and P. Y. Tam, “Cross-Polarization Characteristics of Circular Patch Antennas,” Electronic Letters, Vol. 28, No. 6, 1992, pp. 587-589. doi:10.1049/el:19920370
[2] T. Huynh, K. F. Lee and R. Q. Lee, “Cross-Polarization Characteristics of Rectangular Patch Antennas,” Electronic Letters, Vol. 24, No. 8, 1988, pp. 463-464. doi:10.1049/el:19880313
[3] A. A. Kishk and L. Shafai, “The Effects of Various Parameters of Circular Microstrip Antennas on Their Radiation Efficiency and the Mode Excitation,” IEEE Transactions on Antennas and Propagation, Vol. 34, No. 8, 1986, pp. 969-976. doi:10.1109/TAP.1986.1143939
[4] A. Petosa, A. Ittipiboon and N. gagnon, “Suppression of Unwanted Probe Radiation in Wide Band Probe-Fed Microstrip Patches,” Electronic Letters, Vol. 35, No. 5, 1999, pp. 355-357. doi:10.1049/el:19990269
[5] C.-W. Su and K.-L. Wong, “Circularly Polarized Microstrip Antenna with a Rectangular Ground Plane,” Microwave and Optical Technology Letters, Vol. 37, No. 2, 2003, pp. 93-95. doi:10.1002/mop.10833
[6] S. Chattopadhyay, M. Biswas, J. Y. Siddiqui and D. Guha, “Rectangular Microstrips with Variable Air-Gap Varying Aspect Ratio: Improved Formulation and Experiments,” Microwave Optical Technology Letters, Vol. 51, No. 1, 2009, pp. 169-173.
[7] S. Chattopadhyay, M. Biswas, J. Y. Siddiqui and D. Guha, “Input Impedance of Probe-Fed Rectangular Microstrip Antennas with Variable Air-Gap and Varying Aspect Ratio,” IET Microwaves, Antennas and Propagation, Vol. 3, No. 8, 2009, pp. 1151-1156. doi:10.1049/iet-map.2008.0320
[8] HFSS, “High Frequency Structure Simulator, Version 11.1,” Ansoft Corp, Pittsburgh, 2008.
[9] R. Garg, P. Bhartia, I. Bahl and A. Ittipiboon, “Microstrip Antenna Design Handbook,” Artech House, Norwood, 2001.
[10] M. L. Oberhart, Y. T. Lo and R. Q. H. Lee, “New Simple Feed Network for an Array Module of Four Microstrip Elements,” Electronics Letters, Vol. 23, No. 9, 1987, pp. 436-437. doi:10.1049/el:19870314
[11] K. R. Carver and J. W. Mink, “Microstrip Antenna Technology,” IEEE Transactions on Antennas and Propagation, Vol. 29, No. 1, 1981, pp. 2-24. doi:10.1109/TAP.1981.1142523
[12] W. F. Richards, Y. T. Lo and D. D. Harrison, “An Improved Theory for Microstrip Antennas and Applications,” IEEE Transactions on Antennas and Propagation, Vol. 29, No. 1, 198, pp. 38-461. doi:10.1109/TAP.1981.1142524
[13] N. Herscovici, “New Considerations in Design of microstrip Antennas,” IEEE Transactions on Antennas and Propagation, Vol. 46, No. 6, 1998, pp. 807-812. doi:10.1109/8.686766

  
comments powered by Disqus

Copyright © 2019 by authors and Scientific Research Publishing Inc.

Creative Commons License

This work and the related PDF file are licensed under a Creative Commons Attribution 4.0 International License.