Abstract
We proposed and fabricated a terahertz resonant-tunneling-diode oscillator integrated with two offset slot-ring antennas for high-output power and high-directivity radiation. In this device, the length of the antenna, approximately half the wavelength of the oscillation frequency, enables efficient terahertz radiation. The increased radiation conductance, resulting from the offset and the two slot-ring antennas, enables higher output power. Additionally, radiation directivity can be improved by using two slot-ring antennas. The fabricated device generated high-power oscillation of 1.29 mW at 412 GHz. This is the highest output power of a single electronic device oscillator in the 400 GHz range.
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