volume | PIER Journals

2009-03-16

On the Radiation Pattern of the L-Shaped Wire Antenna

Aurora Andujar,

Dr. Aurora Andujar

Technology and Intellectual Property Rights Department

Fractus

Spain

Homepage

Jaume Anguera,

Dr. Jaume Anguera

Electronics and Communications

Universitat Ramon Llull

Spain

Homepage

Carles Puente,

Dr. Carles Puente

Technology and Intellectual Property Rights Department

Fractus

Spain

Homepage

Antonio Pérez

Dr. Antonio Pérez

Electronics and Telecommunications Department

Universitat Ramon Llull

Spain

Homepage

Progress In Electromagnetics Research M, Vol. 6, 91-105, 2009

doi:10.2528/PIERM09012204

Abstract

An objective of the present study is to make a physical insight into the radiation properties of an L-shaped wire antenna. More specifically, the study is focused on the effects of the antenna geometry over the characteristic radiation pattern of an L-shaped wire antenna. Regarding the basic equations for the radiated field, three main regions according to the length-height ratio of an L-shaped wire antenna have been determined. The said regions depict the geometrical boundaries where the L-shaped wire antenna loses its characteristic monopoletype radiation pattern. In this sense and relating to the aspect ratio of the L-shaped antenna, the said radiation properties can be easily varied in order to achieve a half isotropic radiation pattern or even, a patch-type radiation pattern. Thus, the method described herein demonstrates that simple modifications applied to the geometry of a basic structure, allow obtaining radiation properties associated to more complex structures.

Citation

Copy Export

Aurora Andujar, Jaume Anguera, Carles Puente, and Antonio Pérez, "On the Radiation Pattern of the L-Shaped Wire Antenna," Progress In Electromagnetics Research M, Vol. 6, 91-105, 2009.
doi:10.2528/PIERM09012204

References

1. Wunsch, A. D. and S.-P.-Hu, "A closed-form expression for the driving-point impedance of the small inverted L antenna," IEEE Transactions on Antennas and Propagation, Vol. 44, No. 2, 236-242, February 1996.
doi:10.1109/8.481653

2. King, R., C. W. Harrison, and D. H. Denton, "Transmission-line missile antennas," IEEE Transactions on Antennas and Propagation, Vol. 8, No. 1, 88-90, January 1960.
doi:10.1109/TAP.1960.1144802

3. Simpson, T. L., "The theory of top-loaded antennas: Integral equations for the currents," IEEE Transactions on Antennas and Propagation, Vol. 19, No. 2, 186-190, March 1971.
doi:10.1109/TAP.1971.1139900

4. Guertler, R. J. F., "Isotropic transmission line antenna and its toroid-pattern modification," IEEE Transactions on Antennas and Propagation, Vol. 25, No. 3, 386-392, May 1997.
doi:10.1109/TAP.1977.1141590

5. Hansen, R. C., "Effects of a high-impedance screen on a dipole antenna," IEEE Antennas and Wireless Propagation Letters, Vol. 1, 46-49, 2002.
doi:10.1109/LAWP.2002.805121

6. Chen, H. T., J. X. Luo, and D. K. Zhang, "An analytic formula of the current distribution for the VLF horizontal wire antenna above lossy half-space," Progress In Electromagnetics Research Letters, Vol. 1, 149-158, 2008.
doi:10.2528/PIERL07112904

7. Green, H. E. and J. D. Cashman, "The transmission line antenna revisited," IEEE Transaction on Antennas and Propagation, Vol. 38, No. 4, 575-578, April 1990.
doi:10.1109/8.52280

8. Balanis, C. A., Antenna Theory Analysis and Design, 2 Ed., No. 4, 133-203, John Wiley & Sons, 1997.

9. Rogers, S. D., C. M. Butler, and A. Q. Martin, "Design and realization of GA-optimized wire monopole and matching network with 20 : 1 bandwidth," IEEE Transaction on Antennas and Propagation, Vol. 51, No. 3, 493-502, March 2003.
doi:10.1109/TAP.2003.809851

10. Long, S. A., "A combination of linear and slot antennas for quasi-isotropic coverage," IEEE Transaction on Antennas and Propagation, 572-576, July 1975.

11. Mehdipour, A., H. Aliakbarian, and J. Rashed-Mohassel, "A novel electrically small spherical wire antenna with almost isotropic radiation pattern," IEEE Antennas and Wireless Propagation Letters, Vol. 7, 396-399, 2008.
doi:10.1109/LAWP.2008.2000665