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Progress In Electromagnetics Research
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FULL-WAVELENGTH DIPOLE ANTENNA ON A GAAS MEMBRANE COVERED BY A FREQUENCY SELECTIVE SURFACE FOR A TERAHERTZ PHOTOMIXER

By T. K. Nguyen, T. A. Ho, I. Park, and H. Han

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Abstract:
An antenna consisting of a full-wavelength dipole on a GaAs membrane covered by a frequency-selective surface is proposed for improved output power from photomixers used as terahertz (THz) sources. The antenna structure reduces the vertical dimension of a typical photomixer antenna using a substrate lens while still exhibiting high total efficiency and high directivity. The resulting antenna after optimization produced an input resistance of 3870 Ω and a radiation efficiency of 60%, corresponding to a total efficiency of approximately 48.3% and a maximum directivity of 20.2 dBi at the resonance frequency of 1.03 THz. The proposed antenna is expected to be a promising alternative THz photomixer design.

Citation:
T. K. Nguyen, T. A. Ho, I. Park, and H. Han, "Full-Wavelength Dipole Antenna on a GaAs Membrane Covered by a Frequency Selective Surface for a Terahertz Photomixer," Progress In Electromagnetics Research, Vol. 131, 441-455, 2012.
doi:10.2528/PIER12082101
http://www.jpier.org/PIER/pier.php?paper=12082101

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