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Dielectric Rod Waveguide Antenna as THz Emitter for Photomixing Devices

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Preu,  Sascha
Max Planck Fellow Group, Max Planck Institute for the Science of Light, Max Planck Society;
International Max Planck Research School, Max Planck Institute for the Science of Light, Max Planck Society;

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Sedlmeir,  Florian
Whispering Gallery Mode Resonator, Leuchs Division, Max Planck Institute for the Science of Light, Max Planck Society;

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Schwefel,  Harald G. L.
Whispering Gallery Mode Resonator, Leuchs Division, Max Planck Institute for the Science of Light, Max Planck Society;

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Malzer,  Stefan
Guests, Max Planck Institute for the Science of Light, Max Planck Society;

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Citation

Rivera-Lavado, A., Preu, S., Enrique Garcia-Munoz, L., Generalov, A., Montero-de-Paz, J., Doehler, G., et al. (2015). Dielectric Rod Waveguide Antenna as THz Emitter for Photomixing Devices. IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, 63(3), 882-890. doi:10.1109/TAP.2014.2387419.


Cite as: http://hdl.handle.net/11858/00-001M-0000-002D-6402-E
Abstract
We propose a dielectric rod waveguide antenna (DRW) integrated with a photomixer as a THz emitter. This represents a different approach as opposed to the classical solution of a substrate lens. Main goals are an inexpensive alternative to substrate lenses, reduction of both reflections on the semiconductor-air interface and scattering of terahertz-generated power into the substrate. A radiation pattern measured at 137 GHz is shown as a proof-of-concept. In order to increase radiated power, the improvement of the rod antenna is discussed. Finally, as an application example, evanescent coupling of the DRW into a high index whispering gallery mode resonator is shown.