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IEEE Transactions on Antennas and Propagation
Volume 46 Number 5, May 1998

Table of Contents for this issue

Complete paper in PDF format

Analysis of Linear Coaxial Antennas

Jean-Fu Kiang, Member, IEEE

Page 636.

Abstract:

Two types of linear coaxial antennas, coaxial-colinear antennas, and slotted coaxial antennas are studied to check the possibility of using them as the base-station antenna in personal communication systems. The slot voltages and input impedance of linear coaxial antennas are obtained by using a transmission-line analysis where the radiation effect is accounted by a shunt and a serial admittance, respectively. The current distribution is obtained by solving an integral equation using the method of moments. The radiation pattern and directivity are then obtained from the current distribution and the reflection coefficient inside the coaxial cable. Factors analyzed include frequency, coaxial filling permittivity, and segment number.

References

  1. Y. Wang and D. Fan, "Accurate global solutions of EM boundary-value problems for coaxial radiators," IEEE Trans. Antennas Propagat., vol. 42, pp. 767-770, May 1994.
  2. T.-D. Nhat and R. H. MacPhie, "The admittance of a monopole antenna fed through a ground plane by a coaxial line," IEEE Trans. Antennas Propagat., vol. 39, pp. 1243-1247, Aug. 1991.
  3. R. D. Nevels, "The annular aperture antenna with a hemispherical center conductor extension," IEEE Trans. Antennas Propagat., vol. 35, pp. 41-45, Jan. 1987.
  4. B. B. Balsley and W. L. Ecklund, "A portable coaxial collinear antenna," IEEE Trans. Antennas Propagat., vol. AP-20, pp. 513-516, July 1972.
  5. T. J. Judasz, W. L. Ecklund, and B. B. Balsley, "The coaxial collinear antenna: Current distribution from the cylindrical antenna equation," IEEE Trans. Antennas Propagat., vol. AP-35, pp. 327-331, Mar. 1987.
  6. T. J. Judasz and B. B. Balsley, "Improved theoretical and experimental models for the coaxial colinear antenna," IEEE Trans. Antennas Propagat., vol. 37, pp. 289-296, Mar. 1989.
  7. R. C. Hansen, "Evaluation of the Synder dipole," IEEE Trans. Antennas Propagat., vol. AP-35, pp. 207-210, Feb. 1987.
  8. S. Papatheodorou, J. R. Mautz, and R. F. Harrington, "The aperture admittance of a circumferential slot in a circular cylinder," IEEE Trans. Antennas Propagat., vol. 40, pp. 240-244, Feb. 1992.
  9. J.-F. Kiang, "Radiation properties of circumferential slots on a coaxial cable," IEEE Trans. Microwave Theory Tech., vol. 45, pp. 102-107, Jan. 1997
  10. L. C. Shen and J. A. Kong, Applied Electromagnetism, 3rd ed.Boston, MA: PWS, 1995.
  11. R. F. Harrington, Time-Harmonic Electromagnetic Fields.New York: McGraw-Hill, 1993.
  12. --, Field Computation by Moment Methods.New York: IEEE Press, 1993.