Subcarrier Frequency-Modulated Continuous-Wave Radar in the Terahertz Range Based on a Resonant-Tunneling-Diode Oscillator Article Swipe

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Adrian Dobroiu , Yusuke Shirakawa , Safumi Suzuki , Masahiro Asada , Hiroshi Itô ·

YOU? · · 2020 · Open Access · · DOI: https://doi.org/10.3390/s20236848

We introduce a new principle for distance measurement in the terahertz-wave range using a resonant-tunneling-diode (RTD) oscillator as a source at 511 GHz and relying on the frequency-modulated continuous-wave (FMCW) radar technique. Unlike the usual FMCW radar, where the sawtooth frequency modulation is applied to the carrier, we propose applying it to a subcarrier obtained by amplitude modulation; this is advantageous when the source cannot be controlled precisely in oscillation frequency, but can easily be modulated in amplitude, as is the case of the RTD oscillator. The detailed principle and a series of proof-of-concept experimental results are presented.

Related Topics

Sawtooth Wave

Voltage-Controlled Oscillator

Frequency Modulation

Radar

Continuous-Wave Radar

Physics

Amplitude Modulation

Electronic Engineering

Optics

Electrical Engineering

Orthogonal Frequency-Division Multiplexing

Concepts

Sawtooth wave Resonant-tunneling diode Voltage-controlled oscillator Subcarrier Terahertz radiation Frequency modulation Radar Frequency drift Continuous-wave radar Physics Variable-frequency oscillator Vackář oscillator Amplitude modulation Continuous wave Local oscillator Electronic engineering Optics Electrical engineering Computer science Engineering Telecommunications Laser Phase noise Radar imaging Radio frequency Voltage Quantum mechanics Quantum well Orthogonal frequency-division multiplexing Channel (broadcasting)

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Type: article
Language: en
Landing Page: https://doi.org/10.3390/s20236848
PDF: https://www.mdpi.com/1424-8220/20/23/6848/pdf?version=1606802918
OA Status: gold
Cited By: 16
References: 20
Related Works: 10
OpenAlex ID: https://openalex.org/W3109722388

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DOI: https://doi.org/10.3390/s20236848

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Title: Subcarrier Frequency-Modulated Continuous-Wave Radar in the Terahertz Range Based on a Resonant-Tunneling-Diode Oscillator

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Language: en

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Publication year: 2020

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Publication date: 2020-11-30

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Authors: Adrian Dobroiu, Yusuke Shirakawa, Safumi Suzuki, Masahiro Asada, Hiroshi Itô

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Landing page: https://doi.org/10.3390/s20236848

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Concepts: Sawtooth wave, Resonant-tunneling diode, Voltage-controlled oscillator, Subcarrier, Terahertz radiation, Frequency modulation, Radar, Frequency drift, Continuous-wave radar, Physics, Variable-frequency oscillator, Vackář oscillator, Amplitude modulation, Continuous wave, Local oscillator, Electronic engineering, Optics, Electrical engineering, Computer science, Engineering, Telecommunications, Laser, Phase noise, Radar imaging, Radio frequency, Voltage, Quantum mechanics, Quantum well, Orthogonal frequency-division multiplexing, Channel (broadcasting)

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Cited by: 16

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Citations by year (recent): 2025: 1, 2024: 2, 2023: 4, 2022: 5, 2021: 4

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References (count): 20

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