18 October 2001 GPR application of the conical spiral antenna probe
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The project motivating this paper is the deployment of a frequency independent antenna on the transceiver of a monostatic ground-penetrating radar used to detect mines. The design goal is that the radiation pattern and input impedance to nearly uniform over a band from 1 GHz to 5GHz if the antenna is partially immersed in a typical soil medium. The contemplated method of deployment is to have the antenna straddle the air-soil interface i.e. partly in free space and partly underground, radiating into the ground. The particular subclass of frequency-independent antenna under investigation for this application is the conical equiangular-spiral antenna, in which thin wires are wound around a conical frame and the radiation is from the apex and reaches its peak in the axial direction. The conical structure, about 50cm long and with a maximum diameter of 12cm, is thrust into the ground apex-first at an angle of about 70 degrees to the vertical.
© (2001) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Harold R. Raemer, Harold R. Raemer, Carey M. Rappaport, Carey M. Rappaport, } "GPR application of the conical spiral antenna probe", Proc. SPIE 4394, Detection and Remediation Technologies for Mines and Minelike Targets VI, (18 October 2001); doi: 10.1117/12.445505; https://doi.org/10.1117/12.445505

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