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PIER PIER B PIER C PIER M PIER Letters PIER Photonics
2015-10-01
A Photomixer Driven Terahertz Dipole Antenna with High Input Resistance and Gain
By
Wenfei Yin,

    Dr. Wenfei Yin

    Department of Electronic and Electrical Engineering

    University of Sheffield

    UK

    Homepage

Kenneth Kennedy,

    Dr. Kenneth Kennedy

    University Sheffield

    England

    Homepage

Jayanta Sarma,

    Dr. Jayanta Sarma

    Department of Electronic and Electrical Engineering

    University of Bath

    UK

    Homepage

Richard A. Hogg,

    Prof. Richard A. Hogg

    Department of Electronic and Electrical Engineering, Centre for Nano-science and Technology

    The University of Sheffield

    UK

    Homepage

Salam Khamas

    Dr. Salam Khamas

    Department of Electronic and Electrical Engineering

    The University of Sheffield

    UK

    Homepage

Progress In Electromagnetics Research M, Vol. 44, 13-20, 2015
doi:10.2528/PIERM15052902 | Google Scholar

Abstract
A terahertz (THz) antenna is proposed that offers high input resistance and gain in the presence of an electrically thick GaAs substrate. The antenna is centrally fed using two vertical probes connected to a photomixer on a thin low temperature grown gallium arsenide (LTG-GaAs) film which is supported by the GaAs substrate. An input impedance of ~3.3 kΩ has been achieved using a dipole antenna that is printed on a thin dielectric slab, and isolated from the supporting substrate using a metal ground plane. A square aperture has been introduced to facilitate the illumination of the photomixer with two laser beams. Furthermore, a frequency selective surface (FSS) has been incorporated in the configuration, which results in a broadside gain of ~19 dBi at a resonance frequency of 0.97 THz.
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Citation
Wenfei Yin, Kenneth Kennedy, Jayanta Sarma, Richard A. Hogg, and Salam Khamas, "A Photomixer Driven Terahertz Dipole Antenna with High Input Resistance and Gain," Progress In Electromagnetics Research M, Vol. 44, 13-20, 2015.
doi:10.2528/PIERM15052902
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