Miniaturized Millimeter-Wave Radar Sensor for High-Accuracy Applications

Pauli, Mario; Göttel, Benjamin; Scherr, Steffen; Bhutani, Akanksha; Ayhan, Serdal; Winkler, Wolfgang; Zwick, Thomas

doi:10.1109/tmtt.2017.2677910

Cited by 99 publications

(34 citation statements)

References 32 publications

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“…On the contrary, radar sensors can work in a multi-sensor scenario and do not require a smooth target surface and dust-free environment. Traditional FMCW radar uses a chirp signal which requires a certain bandwidth to achieve a high distance accuracy [3][4][5]. Typically, the FMCW radar cannot share the spectrum with other FMCW radars.…”

mentioning

confidence: 99%

Micrometer Accuracy Phase Modulated Radar for Distance Measurement and Monitoring

An¹,

He²,

Li³

et al. 2020

IEEE Sensors J.

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An enhanced accuracy random binary phase modulated radar is proposed. It can be used in high accuracy monitoring in manufacturing. Compared with the traditional high accuracy radar using frequency modulated continuous wave (FMCW), the proposed radar system can be used in a multiuser scenario without occupying more bandwidth. A two-step distance estimation method is introduced to estimate the distance. First, the distance estimation accuracy is narrowed down to a half carrier wavelength by analyzing the envelope of the phase modulated signal. Then the carrier phase information increases the distance accuracy to several micrometers. An equalization method is introduced to solve the I/Q imbalance problem. The proposed radar system is demonstrated at a carrier frequency of 80 GHz with a bandwidth of 2 GHz. The measured distance error was within ±7 μm. In addition, a high measurement repetition rate of 500 kHz was reached which is suitable for real-time monitoring in automatic manufacturing.

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mentioning

confidence: 99%

Micrometer Accuracy Phase Modulated Radar for Distance Measurement and Monitoring

An¹,

He²,

Li³

et al. 2020

IEEE Sensors J.

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“…The unambiguous single measurement accuracy has been improved from about 400 µm to 8 µm at 80 GHz. The authors in [11] have proposed a highly miniaturized and commercially available millimeter wave radar sensor working in the 121-127 GHz, which can be utilized for micrometer range accuracy. FMCW radars at 120 GHz band have achieved micrometer level range accuracy [12], [13], but the measurement rate is often limited by the frequency sweep speed.…”

Section: Introductionmentioning

confidence: 99%

OFDM Radar Range Accuracy Enhancement Using Fractional Fourier Transformation and Phase Analysis Techniques

Li¹,

An²,

An³

et al. 2020

IEEE Sensors J.

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Orthogonal Frequency Division Multiplexing (OFDM) technique is obtained significant attention in radar applications for its interference resilience property. In this paper, Fractional Fourier Transformation (FRFT) and phase analysis techniques are proposed to enhance ranging accuracy of an OFDM Radar. A proof-of-concept radar is built and tested at 79 GHz and a range accuracy of 20 µm at 5 MHz measurement rate was measured. The range accuracy is 500 times higher compared with the application of fast Fourier transformation (FFT) method.

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“…The frequency band from 141 to 148.5 GHz is allocated by the Federal Communications Commission (FCC) for fixed and mobile communication [3]. Thus this frequency band has been exploited for a lot of applications in various fields such as spectroscopy [4], radiometer [5], biosensor [6], imaging [7,8], radar [9] and high-data-rate communication [10,11,12,13].…”

Section: Introductionmentioning

confidence: 99%

A 140 GHz area-and-power-efficient VCO using frequency doubler in 65 nm CMOS

Otsuki

Khanh

Iizuka

2019

IEICE Electron. Express

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This paper presents a compact, low-phase-noise and low-power D-band VCO with the tuning range from 140.1 to 143.5 GHz. To improve the area and power efficiency, we avoid using signal amplification and matching circuits in the VCO, where a 70 GHz LC oscillator is directly coupled to a frequency doubler. The layout of the transistors is optimized so that the signal loss and reflection are minimized. The proposed VCO fabricated in a 65 nm CMOS technology occupies the core area of 0.05 mm 2. It achieves the output power of −8 dBm and the phase noise of −108.2 dBc/Hz at 10 MHz offset with the power consumption of 24 mW from 1 V supply, which leads to the figure-of-merit (FoM) of −177.4 dBc/Hz.

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Miniaturized Millimeter-Wave Radar Sensor for High-Accuracy Applications

Cited by 99 publications

References 32 publications

Micrometer Accuracy Phase Modulated Radar for Distance Measurement and Monitoring

Micrometer Accuracy Phase Modulated Radar for Distance Measurement and Monitoring

OFDM Radar Range Accuracy Enhancement Using Fractional Fourier Transformation and Phase Analysis Techniques

A 140 GHz area-and-power-efficient VCO using frequency doubler in 65 nm CMOS

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