Searched for: subject%3A%22THz%255C%2Bphotoconductive%255C%2Bantenna%22
(1 - 6 of 6)
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Nerkar, Saurabh (author)
THz time-domain systems driven by photoconductive antennas (PCAs) promise a bandwidth of the order of hundreds of GHz. This characteristic can be utilized to build see-through radars with sub-mm resolution and a field of view comparable to the current mm-wave radars at a relatively low cost. These radars can solve the issues in the field of...
master thesis 2021
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Degasperi, Andrea (author)
Photoconductive antennas (PCAs) have been extensively utilized for the generation of broadband pulses over very large bandwidths. PCAs rely on a semiconductor (e.g. LT- GaAs) gap pumped by a laser and coupled to a passive structure biased at a certain voltage level. When the laser impinges on the semiconductor gap with an appropriate carrier...
master thesis 2019
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Garufo, A. (author), Sberna, P.M. (author), Carluccio, G. (author), Freeman, Joshua R. (author), Bacon, David R. (author), Li, Lianhe (author), Baselmans, J.J.A. (author), Llombart, Nuria (author), Neto, A. (author)
A pulsed photoconductive terahertz (THz) source is presented that is able to radiate milliwatt (mW) level average power over a large bandwidth, by exploiting both the optical and electrical properties of photoconductive sources and the ultrawideband properties of connected antenna arrays. An optical system composed of a microlenses array...
journal article 2019
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Garufo, A. (author), Carluccio, G. (author), Llombart, Nuria (author), Neto, A. (author)
A novel equivalent circuit for pulsed photoconductive sources is introduced for describing the coupling between the photoconductive gap and the antenna. The proposed circuit effectively describes the mechanism of feeding the antenna by the semiconductor when this latter is illuminated by a laser operating in a pulsed mode. Starting from the...
journal article 2018
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Garufo, A. (author), Carluccio, G. (author), Freeman, Joshua R. (author), Bacon, David R. (author), Llombart, Nuria (author), Linfield, Edmund H. (author), Davies, Alexander G. (author), Neto, A. (author)
This second part of two papers' sequence presents the experimental validation of the Norton equivalent circuit model for pulsed photoconductive antennas (PCAs) provided in the first paper of the sequence. To this goal, different prototypes of photoconductive antenna sources have been manufactured and assembled. The average powers radiated and...
journal article 2018
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Zhou, S. (author)
Photoconductive antennas (PCA) are widely used in contemporary THz systems, especially in terahertz time-domain spectroscopy. They are used to radiate and receive THz power. The study of the generation and reception of THz radiation involves both semiconductor theory, electromagnetics, and antenna theory. In this work, after a review of some...
master thesis 2015
Searched for: subject%3A%22THz%255C%2Bphotoconductive%255C%2Bantenna%22
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