Analysis of Phase Mode Variation Due to Bias Voltage in Arrayed Oscillators Using Resonant Tunneling Diodes Integrated with Bow-Tie Antennas

A resonant tunneling diode (RTD)oscillator is one of terahertz generation devices with a small size and operating at room temperature. An arrayed oscillator based on the RTD oscillator have been proposed for increasing an output power of the RTD oscillators. In this study, we propose a new arrayed oscillator composed pair of the RTD oscillator integrated with bow-tie antennas and a coupled structure. Anequivalent circuit of the coupler structure is determined using the electromagnetic simulation. And we calculate an equivalent circuit of our proposed arrayed oscillators included the coupler structure. As results, to occur two phase modes between the RTD oscillators depending on the supplied voltage and to extend the voltage range in even mode with the coupler structure were revealed.