Print Email Facebook Twitter Norton Equivalent Circuit for Pulsed Photoconductive Antennas-Part I Title Norton Equivalent Circuit for Pulsed Photoconductive Antennas-Part I: Theoretical Model Author Garufo, A. (TU Delft Tera-Hertz Sensing) Carluccio, G. (TU Delft Tera-Hertz Sensing) Llombart, Nuria (TU Delft Tera-Hertz Sensing) Neto, A. (TU Delft Tera-Hertz Sensing) Date 2018 Abstract 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 classical continuity equation, which models the free carriers' density with respect to the laser power pump and the semiconductor features, a Norton equivalent circuit in the frequency domain is derived. According to the Norton theorem, the equivalent source representation is decoupled from the antenna. In particular, for photoconductive antennas (PCAs), the Norton circuit takes into account of the electrical and optical properties of the semiconductor material, the features of the laser excitation, as well as the geometrical dimensions of the gap. The presence of the electrodes around the gap is part of the antenna and, therefore, it is taken into account in the antenna impedance. The proposed circuit allows the analysis of the coupling between the photoconductive source and the antenna, providing a tool to analyze and design PCAs. Subject Equivalent circuitphotoconductivityterahertz (THz) photoconductive antenna (PCA)THz radiated powerTHz sourceTHz technology To reference this document use: http://resolver.tudelft.nl/uuid:5c6fb2e6-5626-4468-8ba1-717f0e9a2a05 DOI https://doi.org/10.1109/TAP.2018.2800524 ISSN 0018-926X Source IEEE Transactions on Antennas and Propagation, 66 (4), 1635-1645 Part of collection Institutional Repository Document type journal article Rights © 2018 A. Garufo, G. Carluccio, Nuria Llombart, A. Neto Files PDF 44109348_Norton_Equivalen ... _Model.pdf 1.19 MB Close viewer /islandora/object/uuid:5c6fb2e6-5626-4468-8ba1-717f0e9a2a05/datastream/OBJ/view