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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...
This paper presents the design of terahertz Yagi-Uda antennas with high input resistance. The proposed Yagi-Uda antennas can achieve much higher input resistance than existing THz antennas by using a full-wavelength straight-line dipole and a full-wavelength U-shaped dipole as driver elements. Current leakage into the bias line was minimized by applying photonic bandgap structures at the bias line...
This paper presents a Yagi-Uda antenna with a U-shaped dipole as the driver element for a terahertz photomixer. By constructing the antenna on a thin substrate, end-fire radiation patterns with high antenna impedance can be obtained even when the substrate has a high dielectric constant. The proposed antenna achieves a high input resistance of 4372 Omega at the resonant frequency by using a U-shaped...
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