Design considerations for short-time pulse TEMR antennas using finite difference time-domain algorithm

Adnan Sahin; Carey M. Rappaport; Arnold M. Dean Jr.

doi:10.1117/12.324155

4 September 1998 Design considerations for short-time pulse TEMR antennas using finite difference time-domain algorithm

Adnan Sahin, Carey M. Rappaport, Arnold M. Dean Jr.

Proceedings Volume 3392, Detection and Remediation Technologies for Mines and Minelike Targets III; (1998) https://doi.org/10.1117/12.324155
Event: Aerospace/Defense Sensing and Controls, 1998, Orlando, FL, United States

Abstract

The GEO-CENTERS, INC. transverse electromagnetic rhombus (TEMR) antenna is a complex, broad-band antenna used in a ground-penetrating radar (GPR) system. The TEMR antenna consists of different types of material, has much fine detail and curvature in each of three dimensions. We have used FDTD to analyze the performance of this antenna in both the transmit and receive mode. A three-dimensional analysis was required to evaluate performance for the launch and incidence angles that were imposed by the GPR application. In this paper, a transmitting-receiving TEMR antenna pair in free space is simulated with FDTD. The transmitting antenna is excited with the waveform generated by the pulser electronics. The near zone fields are propagated into the far zone fields by transformation. Then, the far zone fields are used as incident fields for the receiving antenna. Voltage waveforms at the outputs of the simulated antenna compare well with the experimental results.

Citation Download Citation

Adnan Sahin, Carey M. Rappaport, and Arnold M. Dean Jr. "Design considerations for short-time pulse TEMR antennas using finite difference time-domain algorithm", Proc. SPIE 3392, Detection and Remediation Technologies for Mines and Minelike Targets III, (4 September 1998); https://doi.org/10.1117/12.324155

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