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 3, March 2000

Table of Contents for this issue

Complete paper in PDF format

New Computation of the Resonant Frequency of a Tunable Equilateral Triangular Microstrip Patch

Çiğdem Seçkin Gürel, Student Member, IEEE and Erdem Yazgan Member, IEEE

Page 334.

Abstract:

A new dynamic permittivity expression is formulated to be used in the cavity analysis to determine the resonant frequency of an equilateral triangular microstrip patch. The proper sidelength extension expressions are given for low and high substrate permittivity cases. Better accuracy with respect to the moment method and other previous models is obtained for various structural parameters and operational modes. The proposed computation is also extended for the analysis of the two-layer structure in order to determine the air-gap tuning effect on the resonant frequency.

References

  1. J. Helszajn and D. S. James,"Planar triangular resonators with magnetic walls", IEEE Trans. Microwave Theory Tech., vol. MTT-26 , pp.  95-100, Feb.  1978.
  2. A. K. Sharma and B. Bhat,"Analysis of triangular microstrip resonators ", IEEE Trans. Microwave Theory Tech., vol. MTT-30, pp.  2029-2031, Nov.  1982.
  3. J. S. Dahele and K. F. Lee,"On the resonant frequencies of the triangular patch antenna", IEEE Trans. Antennas Propagat., vol. AP-35, pp.  100-101,  Jan.  1987.
  4. R. Garg and S. A. Long,"An improved formula for the resonant frequency of the triangular microstrip patch antenna", IEEE Trans. Antennas Propagat., vol. AP-36, p.  570,  Apr.  1988.
  5. R. Singh, A. De and R. S. Yadava,"Comments on `An improved formula for the resonant frequency of the triangular microstrip patch antenna", IEEE Trans. Antennas Propagat., vol. 39, pp.  1443-1444 , Sept.  1991.
  6. X. Gang,"On the resonant frequencies of microstrip antennas ", IEEE Trans. Antennas Propagat., pp.  245-247, Feb.  1989 .
  7. W. Chen, K. F. Lee and J. S. Dahele,"Theoretical and experimental studies of the resonant frequencies of equilateral triangular microstrip antenna", IEEE Trans. Antennas Propagat., vol. 40, pp.  1253-1256, Oct.  1992 .
  8. K. Güney,"Resonant frequency of a triangular microstrip antenna", Microwave Opt. Technol. Lett., vol. 6, pp.  555-557, July  1993.
  9. N. Kumprasert and K. W. Kiranon,"Simple and accurate formula for the resonant frequency of the equilateral triangular microstrip patch antenna ", IEEE Trans. Antennas Propagat., vol. 42, pp.  1178-1179, Aug.  1994.
  10. D. Karaboğa, K. Güney, N. Karaboğa and A. Kaplan,"Simple and accurate effective sidelength expression obtained by using a modified genetic algorithm for the resonant frequency of an equilateral triangular microstrip antenna", Int. J. Electron., vol. 83, pp.  99-108, Jan.  1997.
  11. W. C. Chew and J. A. Kong,"Effects of fringing field on the capacitance of circular microstrip disk", IEEE Trans. Microwave Theory Tech., vol. MTT-28, pp.  98-104, Feb.  1980.
  12. A. K. Verma and Z. Rostamy,"Resonant frequency of uncovered and covered rectangular microstrip patch using modified Wolff model", IEEE Trans. Microwave Theory Tech., vol. MTT-41, pp.  109-116, Jan.   1980.