Publications [#64011] of Lawrence Carin

Papers Published

1. Carin, L., Transient scattering measurements using photoconductively switched planar antennas, Ultra-Wideband, Short-Pulse Electromagnetics. Proceedings of an International Conference (1993), pp. 37 - 49, Brooklyn, NY, USA
   (last updated on 2007/04/14)

   Abstract:
   Describes and presents results for a new type of short-pulse, time-domain scattering range which is capable of generating freely propagating waveforms with bandwidths extending from a few to nearly 80 GHz. The system uses ultrashort optical pulses generated from a picosecond laser to switch planar antennas photoconductively. Although the measurements cover microwave and millimeter-wave frequencies, no conventional microwave or millimeter-wave equipment is employed in the measurements. Over the last several years, picosecond and femtosecond lasers have been used to switch various planar antennas photoconductively, generating short bursts of microwave, millimeter-wave, and terahertz radiation. Because the measurements are performed in the time domain, ultra-wideband (UWB) data can be obtained in a single measurement. These antennas have been used to characterize the UWB properties of dielectrics, semiconductors, and superconductors. These antennas can also be useful for performing short-pulse, time-domain electromagnetic scattering measurements on scaled three-dimensional targets

   Keywords:
   electromagnetic wave scattering;high-speed optical techniques;horn antennas;laser beam applications;microwave measurement;photoconducting devices;time-domain analysis;transients;