Submillimeter-Wave Multiphase Oscillation Using Traveling Pulses in a Resonant-Tunneling Diode-Oscillator Lattice

Sawai, Shinya; Narahara, Koichi

doi:10.1007/s10762-021-00780-z

Cited by 10 publications

(8 citation statements)

References 14 publications

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“…e case where two or more solitary pulses rotate in a lattice loop is considered. By implementing the multiple output ports, the device can operate as a multiphase oscillator [13][14][15][16][17], which contributes to the relaxation of the base frequency to drive the ultrafast systems operating in submillimeter wave or terahertz frequencies using timeinterleaving [18] or output combining [19].…”

Section: Applicationmentioning

confidence: 99%

Interaction of Self-Sustained Pulses in Tunnel-Diode Oscillator Lattices

Narahara

2021

Mathematical Problems in Engineering

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A one-dimensional lattice in tunnel-diode (TD) oscillators supports self-sustained solitary pulses resulting from the balance between gain and attenuation. By applying the reduction theory to the device’s model equation, it is found that two relatively distant pulses moving in the lattice are mutually affected by a repulsive interaction. This property can be efficiently utilized in equalizing pulse positions to achieve jitter elimination. In particular, when two pulses rotate in a small, closed lattice, they separate evenly at the asymptotic limit. As a result, the lattice loop can provide an efficient platform to obtain low-phase-noise multiphase oscillatory signals. In this work, the interaction between two self-sustained pulses in a TD-oscillator lattice is examined, and the properties of interpulse interaction are validated by conducting several measurements using a test breadboarded lattice.

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Section: Applicationmentioning

confidence: 99%

Interaction of Self-Sustained Pulses in Tunnel-Diode Oscillator Lattices

Narahara

2021

Mathematical Problems in Engineering

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“…Optical and electronic transport properties of AlSb/GaInAsSb double barrier RTD had been investigated in [20]. Sawai and Narahara [21] studied the analysis of multiphase oscillation using a closed RTD-oscillator lattice by employing both numerical and experimental methods and examined the usage of an RTD-based cellular neural network in high-speed and highly functional image processors. Also recently Nishida et al [22] used single RTD oscillator to propose a simple coherent detection system which can reduce the size and power consumption of various THz systems.…”

Section: Introductionmentioning

confidence: 99%

Simulation and Comparative Study of Resonant Tunneling Diode

et al. 2022

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This paper studies and investigates the effect of physical and electrical parameters on double, triple and six barrier resonant tunneling diodes (RTD). The materials used for quantum well and barriers are Gallium arsenide (GaAs) and Aluminium gallium arsenide (AlGaAs), respectively. The parameters that were reasoned and studied include conduction band, current density, transmission coefficient and resonance energy. The above parameters were studied by changing bias voltage, temperature, barrier width and doping concentration. From the simulations performed it is observed that for double barrier RTD the peak current density is observed at 0.2 V and the valley current density is observed at 0.3 V, whereas for a triple barrier RTD the peak current density is observed at 0.015 V and the valley current density is observed at 0.06 V. The value of transmission coefficient for double barrier RTD decreases especially after bias applied is more than resonant bias (0.2 V). The effect of increasing bias leads to a decrease in the resonance level in the conduction band. The width of resonance energy decreases with the increase in barrier width. With increase in number of barrier the number of resonance level increases which leads to an increasing peaks in the transmission coefficient curve. The effect of increasing temperature leads to higher current and more resonance energy. With the thickening of barrier width, less transmission of electrons occurs leading to a reduced current density. When the barriers are increased the negative differential region (NDR) is achieved at low voltages. HIGHLIGHTS This paper studies and investigates the effect of physical and electrical parameters on double, triple and six barrier resonant tunneling diodes (RTD) The parameters include conduction band, current density, transmission coefficient, and resonance energy The parameters were studied by changing bias voltage, temperature, barrier width, and doping concentration It is observed that for double barrier RTD the peak current density is observed at 0.2 V and the valley current density is observed at 0.3 V For a triple barrier RTD the peak current density is observed at 0.015 V and the valley current density is observed at 0.06 V GRAPHICAL ABSTRACT

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“…By pulling out voltages at several evenly-spaced cells in the loop, it operates as a multiphase oscillator. 14 The velocity of the pulse train depends significantly on the bias voltage, rendering the VCO property to the multiphase oscillator. The connection of evenly-spaced straight lattices with the loop suffices for the outputs.…”

Section: Introductionmentioning

confidence: 99%

“…The lattice loop can then support rotary pulses. By pulling out voltages at several evenly‐spaced cells in the loop, it operates as a multiphase oscillator 14 . The velocity of the pulse train depends significantly on the bias voltage, rendering the VCO property to the multiphase oscillator.…”

Section: Introductionmentioning

confidence: 99%

A frequency divider using interacting self‐sustained pulses in a tunnel‐diode‐oscillator lattice

Narahara

2022

Circuit Theory & Apps

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Summary An effective method for frequency division, which uses interacting self‐sustained solitary waves propagating in a one‐dimensional tunnel‐diode oscillator lattice, is discussed. When two pulses are input successively, it is found that there is a threshold separation below which the following pulse is significantly attenuated to disappear on the way, which only slightly influences the leading pulse. This phenomenon results in an efficient frequency divider with a high division ratio, which requires a relatively small number of lattice cells. In this study, we illustrate the fundamental dynamics of the self‐sustained pulse interactions and principal operation of frequency division with several experimental validations.

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Submillimeter-Wave Multiphase Oscillation Using Traveling Pulses in a Resonant-Tunneling Diode-Oscillator Lattice

Cited by 10 publications

References 14 publications

Interaction of Self-Sustained Pulses in Tunnel-Diode Oscillator Lattices

Interaction of Self-Sustained Pulses in Tunnel-Diode Oscillator Lattices

Simulation and Comparative Study of Resonant Tunneling Diode

A frequency divider using interacting self‐sustained pulses in a tunnel‐diode‐oscillator lattice

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