Yagi-Uda antennas for Terahertz photomixer

In this paper, we present THz Yagi-Uda antennas with high input impedance, achieving greatly improved impedance matching compared to existing THz antennas. We show designs employing both full-wavelength straight-line dipole and full-wavelength U-shaped dipole drivers. Current leakage into the bias l...

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Bibliographic Details
Main Authors: Kyungho Han, Truong Khang Nguyen, Haewook Han, Ikmo Park
Format: Conference Proceeding
Language:English
Subjects:
Antenna radiation patterns
Design optimization
Dielectric substrates
Dipole antennas
Electromagnetic radiation
Frequency
Impedance matching
Power generation
Resonance
Submillimeter wave technology
Online Access:Request full text
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Summary:In this paper, we present THz Yagi-Uda antennas with high input impedance, achieving greatly improved impedance matching compared to existing THz antennas. We show designs employing both full-wavelength straight-line dipole and full-wavelength U-shaped dipole drivers. Current leakage into the bias line was minimized by applying photonic band gap structures at the bias line. By designing the antenna on a thin substrate, end-fire radiation patterns with high antenna resistance can be obtained even when the substrate has a high dielectric constant. We expect that the proposed Yagi-Uda antennas can achieve increased THz output power over the current state of the art.
DOI:10.1109/IWAT.2010.5464657