Title :
A DGFETD Port Formulation for Photoconductive Antenna Analysis
Author :
Young, John C. ; Boyd, Darren ; Gedney, Stephen D. ; Suzuki, Takehito ; Jinjun Liu
Author_Institution :
Dept. of Electr. Eng., Univ. of Kentucky, Lexington, KY, USA
Abstract :
A discontinuous Galerkin finite-element time-domain (DGFETD) port formulation of the coupled Maxwell´s equations and Drift-Diffusion equations for a photoconductive antenna is derived. The formulation is cast in a form such that static quantities are extracted. The resulting system is used to analyze terahertz-band photoconductive antennas with well-defined gap regions excited by pulsed lasers. Several antenna types are investigated, and results are compared to measured results from the literature .
Keywords :
Galerkin method; Maxwell equations; antenna radiation patterns; broadband antennas; diffusion; finite element analysis; photoconducting devices; terahertz wave devices; time-domain analysis; DGFETD port formulation; broadband terahertz radiation; coupled Maxwell equations; discontinuous Galerkin finite-element time-domain port formulation; drift-diffusion equations; gap regions; pulsed lasers; static quantity extraction; terahertz-band photoconductive antenna analysis; Computational modeling; Dipole antennas; Equations; Mathematical model; Ports (Computers); Semiconductor device modeling; Discontinuous Galerkin finite-element time-domain method; Drift-Diffusion equations; Maxwell’s equations; photoconductive antennas; terahertz-band antennas;
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2014.2364524
