CST – Computer Simulation Technology

Title:
FULL-WAVELENGTH DIPOLE ANTENNA ON A GaAs MEMBRANE COVERED BY A FREQUENCY SELECTIVE SURFACE FOR A TERAHERTZ PHOTOMIXER
Author(s):
T. K. Nguyen, T. A. Ho, I. Park, H. Han
Source:
Progress In Electromagnetics Research
Vol./Issue/Date:
Volume: 131, 2012
Year:
2012
Page(s):
441 - 455
Keywords:
Dipole Antenna on GaAs, Membran, Selective Surface, Photomixer
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 e±ciency and high directivity. The resulting antenna after optimization produced an input resistance of 3870­ and a radiation e±ciency of 60%, corresponding to a total e±ciency, i.e., the e±ciency of the antenna in THz wave radiation, of approximately 48.3% and a maximum directivity of 20.2 dBi at the resonance frequency of 1.03 THz. The proposed antenna
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