The conical antenna has wide input impedance bandwidth and omni-directional radiation pattern (Kawakami and Sato, 1987; Liang and Wah, 2000). This special property makes it irreplaceable in some modern applications, for instance, in portable or mobile communications requiring very wide-bandwidth channels or where continuous frequency coverage is needed. The prototype of the conical antenna has a threedimensional structure. It is mechanically difficult to fabricate and integrate. In (Gentili et al., 2004), a dielectric loaded conical antenna is reported, where the dielectric loading mechanically stabilizes the conical antenna while maintaining wide band input impedance characteristics. However in (Gentili et al., 2004), the loading material is magnetic, hence not practical; and the antenna still has a three-dimensional configuration. In this study, a conical antenna with metallic cones coated on non-magnetic dielectric slab is proposed. The proposed antenna has a quasi-planar structure. It is mechanically stable, and easy to build and integrate with planar circuits. A full wave analysis code is developed to simulate this novel conical antenna. It is shown that the input impedance remains close to a constant value when the loading material’s dielectric constant is chosen within a wide range. A quasi-planar conical antenna is fabricated with high density polyurethane foam as the loading material. The measurement data verifies the simulation results. Techniques to reduce the antenna size and adjust the radiation pattern are also discussed.
Access provided by Autonomous University of Puebla. Download to read the full chapter text
Chapter PDF
Similar content being viewed by others
Keywords
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
5. References
Gentili G. B., Cerretelli M., and Cecchi L., 2004, Coated conical antennas for automotive application, Journal of Electromagnetic Waves and Applications 18:85.
Kawakami H. and Sato G., 1987, Broad-band characteristics of rotationally symmetric antennas and thin wire constructs, IEEE Transactions on Antennas and Propagation 35:26.
Liang X. and Wah M. C. Y., 2000, Low-profile broadband omnidirectional monopole antenna, Microwave and Optical Technology Letters 25:135.
Medgyesi-Mitschang L. N., Putnam J. M., and Gedera M. B., 1994, Generalized method of moments for three-dimensional penetrable scatterers, Journal of the Optical Society of America A 11:1383.
Richards W. F., Lo Y. T., and Harrison D. D., 1981, An improved theory for microstrip antennas and application, IEEE Transactions on Antennas and Propagation 29:38.
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2007 Springer Science+Business Media, LLC
About this chapter
Cite this chapter
Lu, M., Bredow, J.W., Jung, S., Tjuatja, S. (2007). A Quasi-Planar Wide Band Conical Antenna. In: Baum, C.E., Stone, A.P., Tyo, J.S. (eds) Ultra-Wideband Short-Pulse Electromagnetics 8. Springer, New York, NY. https://doi.org/10.1007/978-0-387-73046-2_4
Download citation
DOI: https://doi.org/10.1007/978-0-387-73046-2_4
Publisher Name: Springer, New York, NY
Print ISBN: 978-0-387-73045-5
Online ISBN: 978-0-387-73046-2
eBook Packages: Physics and AstronomyPhysics and Astronomy (R0)