Abstract
Antenna-coupled Metal-Oxide-Metal (MOM) diodes have been demonstrated for sensing and proposed for energy harvesting at THz, infrared, and even visible frequencies. The design of the antenna allows engineering of the response of the device with respect to polarization, wavelength and angle of incidence. The classic understanding of the antenna coupled MOM diode is that the electric field generated by the antenna causes electrons to tunnel through the barrier oxide. This is supported by the fact that when the oxide separates metals with different work functions, a properly polarized field can produce an asymmetric tunnel current under zero bias. Losses in the metal structure and oxide also lead to heat generation when the device is illuminated. It was recently suggested that the temperature rise may lead to Seebeck effect at the junction between the metals and this may constitute a better explanation for the device performance. This paper presents a coupled electromagnetic/thermal analysis of an isolated dipole coupled diode and a phased array of two dipole antennas connected to a diode with a transmission line. The results show that the field across the diode matches experiments better than the temperature of the oxide layer.
Recommended Citation
E. C. Kinzel et al., "Thermal-electromagnetic Analysis of Infrared Antennas," AIAA AVIATION 2014 -11th AIAA/ASME Joint Thermophysics and Heat Transfer Conference, American Institute of Aeronautics and Astronautics, Jan 2014.
The definitive version is available at https://doi.org/10.2514/6.2014-3120
Department(s)
Mechanical and Aerospace Engineering
Publication Status
Available Access
International Standard Book Number (ISBN)
978-162410281-3
Document Type
Article - Conference proceedings
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2024 American Institute of Aeronautics and Astronautics, All rights reserved.
Publication Date
01 Jan 2014
