2000 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.

IEEE Transactions on Microwave Theory and Techniques
Volume 48 Number 10, October 2000

Table of Contents for this issue

Complete paper in PDF format

Resonant Modes of Circular Microstrip Patches Over Ground Planes with Circular Apertures in Multilayered Substrates Containing Anisotropic and Ferrite Materials

Vicente Losada, Rafael R. Boix, Member, IEEE and Manuel Horno Member, IEEE

Page 1756.

Abstract:

In this paper, the authors analyze how the resonant modes of circular microstrip patch resonators are affected by the presence of circular apertures in the ground plane located under the patches. A rigorous full-wave analysis in the Hankel transform domain (HTD) is carried out in order to obtain the resonant frequencies, quality factors, and radiation patterns of the circular microstrip patch resonators over ground planes with circular apertures. With the use of suitable Green's functions in the HTD, the analysis is performed for the case where the circular patches, as well as the ground planes containing the apertures are embedded in a multilayered substrate consisting of isotropic dielectrics, uniaxial anisotropic dielectrics, and/or magnetized ferrites. The numerical results obtained are compared with experimental results, and good agreement is found. The results show that the circular apertures significantly affect the resonant frequencies of circular microstrip patches.

References

  1. K. A. Michalski and D. Zheng, "Analysis of microstrip resonators of arbitrary shape", IEEE Trans. Microwave Theory Tech., vol. 40, pp.  112-119, Jan.  1992.
  2. D. M. Pozar, "Microstrip antenna aperture-coupled to a microstripline", Electron. Lett., vol. 21, no. 2, pp.  49-50, 1988.
  3. P. L. Sullivan and D. H. Schaubert, "Analysis of an aperture coupled microstrip antenna", IEEE Trans. Antennas Propagat., vol. AP-34, pp.  977-984,  Aug.  1986.
  4. K. Kawano and H. Tomimuro, "Hybrid-mode analysis of a microstrip-slot resonator", Proc. Inst. Elect. Eng., vol. 129, no.  6, pp.  351-355, June  1982.
  5. K. Kawano, "Hybrid-mode analysis of coupled microstrip-slot resonators", IEEE Trans. Microwave Theory Tech., vol. MTT-33, pp.  38-43, Jan.  1985.
  6. N. G. Alexopoulos, "Integrated-circuit structures on anisotropic substrates", IEEE Trans. Microwave Theory Tech., vol. MTT-33, pp.  847-881, Oct.  1985.
  7. D. M. Pozar, "Radiation and scattering from a microstrip patch on a uniaxial substrate", IEEE Trans. Antennas Propagat., vol. AP-35, pp.  613-621, June  1987.
  8. D. M. Pozar and V. Sanchez, "Magnetic tuning of a microstrip antenna on a ferrite substrate", Electron. Lett., vol. 24, no. 12, pp.  729-731, 1988.
  9. D. M. Pozar, "Radiation and scattering characteristics of microstrip antennas on normally biased ferrite substrates", IEEE Trans. Antennas Propagat., vol. AP-40, pp.  1084-1092, Sept.  1992.
  10. K. Araki and T. Itoh, "Hankel transform domain analysis of open circular microstrip radiating structures", IEEE Trans. Antennas Propagat., vol.  AP-29, pp.  84-89, Jan.  1981.
  11. D. M. Pozar, Microwave Engineering, Reading, MA: Addison-Wesley, 1990.
  12. V. Losada, R. R. Boix and M. Horno, "Resonant modes of circular microstrip patches in multilayered substrates", IEEE Trans. Microwave Theory Tech., vol. 47, pp.  488-498, Apr.  1999.
  13. F. L. Mesa, R. Marques and M. Horno, "A general algorithm for computing the bidimensional spectral Green's dyad in multilayered complex bianisotropic media: The equivalent boundary method", IEEE Trans. Microwave Theory Tech., vol. 39, pp.  1640-1649, Sept.  1991.
  14. R. E. Collin, Antennas and Radiowave Propagation, New York: McGraw-Hill, 1985.
  15. B. D. Popovic and A. Nesic, "Some extensions of the concept of complementary electromagnetic structures", Proc. Inst. Elect. Eng., vol. 132, no. 2, pp.  131-137, Feb.  1985.
  16. A. Bhattacharayya and T. Tralman, "Effects of dielectric superstrate on patch antennas", Electron. Lett., vol. 24, no. 6, pp.  356-358, 1988.
  17. V. Losada, R. R. Boix and M. Horno, "Analysis of circular stripline resonators on normally biased ferrite substrates", IEEE Microwave Guided Wave Lett., vol. 8, pp.  226-228, June  1998.