Study of the conical spiral antenna for use in ground-penetrating radars: initial results

Thorsten W. Hertel; Glenn S. Smith

doi:10.1117/12.396190

22 August 2000 Study of the conical spiral antenna for use in ground-penetrating radars: initial results

Thorsten W. Hertel, Glenn S. Smith

Proceedings Volume 4038, Detection and Remediation Technologies for Mines and Minelike Targets V; (2000) https://doi.org/10.1117/12.396190
Event: AeroSense 2000, 2000, Orlando, FL, United States

Abstract

In this paper, we examine the conical spiral antenna (CSA) for use in ground-penetrating radars (GPR). When this antenna is isolated in free space, its performance, e.g., input impedance, is nearly frequency independent over a broad range of frequencies, and it has a nearly unidirectional far-field pattern with circular polarization. An antenna with these characteristics would be useful for application in GPRs. However, in a GPR the antenna is placed close to the ground, and the near field of the antenna in the air and ground is of primary importance, not the far field. It is not clear that the desirable characteristics of the CSA in free space, mentioned above, will be preserve din this new situation. This is the motivation for the research described in this paper.

Citation Download Citation

Thorsten W. Hertel and Glenn S. Smith "Study of the conical spiral antenna for use in ground-penetrating radars: initial results", Proc. SPIE 4038, Detection and Remediation Technologies for Mines and Minelike Targets V, (22 August 2000); https://doi.org/10.1117/12.396190

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