A PHOTOMIXER DRIVEN TERAHERTZ DIPOLE ANTENNA WITH HIGH INPUT RESISTANCE AND GAIN
نویسندگان
چکیده
منابع مشابه
A Photomixer Driven Terahertz Dipole Antenna with High Input Resistance and Gain
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...
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II. THEORY AND SIMULATION Abstract— A novel THz device concept called as CW HTS (high temperature superconductive) photomixer/antenna is proposed. Optical heterodyne photomixing in the DC-biased HTS strip has been employed to create THz signal, and the size of the strip on the grounded dielectric substrate is designed to have an efficient broadside radiation. Incorporating the HTS microstrip co...
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Folded dipole antennas are analyzed to increase the terahertz continuous-wave output power. The calculated input impedance of the folded dipole antenna was 3000 Ω. In order to verify the power increase of the proposed antenna, the antenna is fabricated and measured by using the liquid helium cooled silicon bolometer.
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We report highly efficient continuous-wave terahertz (THz) photoconductive antenna based photomixer employing nano-gap electrodes in the active region. The tip-to-tip nano-gap electrode structure provides strong THz field enhancement and acts as a nano-antenna to radiate the THz wave generated in the active region of the photomixer. In addition, it provides good impedance matching to the THz pl...
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we propose a new generation of unbiased (bias-free) antenna-less cw thz photomixer emitters array made of asymmetric msm gratings with subwavelength pitch, operating in optical near-field regime. we take advantage of the size effects in near-field optics and electrostatics to demonstrate the possibility of enhancing the thz power by four orders of magnitude, as compared with a similar array of ...
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ژورنال
عنوان ژورنال: Progress In Electromagnetics Research M
سال: 2015
ISSN: 1937-8726
DOI: 10.2528/pierm15052902