Correction: Park, J.-H. et al. 915-MHz Continuous-Wave Doppler Radar Sensor for Detection of Vital Signs. Electronics 2019, 8, 561

Park, Jae-Hyun; Jeong, Yeo-Jin; Lee, Ga-Eun; Oh, Juntaek; Yang, Jong‐Ryul

doi:10.3390/electronics8080855

Cited by 4 publications

(2 citation statements)

References 1 publication

(1 reference statement)

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“…On the other hand, low carrier frequencies can also be interested to be explored, since they allow high EM penetration in the human body and thus increase accuracy in vital sign detection. In [15], a fractal-slot patch antenna operating at 915 MHz and combined with an ultra-wideband Low Noise Amplifier (LNA) was used for this purpose. In order to evaluate the performance of this CW Doppler radar operating with such low frequency, the path losses were computed and compared for 915 MHz and 2.45 GHz signals, when propagating in the subject body that was located 80 cm apart from the radar.…”

Section: Different Carrier Frequency Applicationsmentioning

confidence: 99%

Different Antenna Designs for Non-Contact Vital Signs Measurement: A Review

et al. 2019

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Cardiopulmonary activity measured through contactless means is a hot topic within the research community. The Doppler radar is an approach often used to acquire vital signs in real time and to further estimate their rates, in a remote way and without requiring direct contact with subjects. Many solutions have been proposed in the literature, using different transceivers and operation modes. Nonetheless, all different strategies have a common goal: enhance the system efficiency, reduce the manufacturing cost, and minimize the overall size of the system. Antennas are a key component for these systems since they can influence the radar robustness directly. Therefore, antennas must be designed with care, facing several trade-offs to meet all the system requirements. In this sense, it is necessary to define the proper guidelines that need to be followed in the antenna design. In this manuscript, an extensive review on different antenna designs for non-contact vital signals measurements is presented. It is intended to point out and quantify which parameters are crucial for the optimal radar operation, for non-contact vital signs’ acquisition.

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Section: Different Carrier Frequency Applicationsmentioning

confidence: 99%

Different Antenna Designs for Non-Contact Vital Signs Measurement: A Review

et al. 2019

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“…Therefore, many studies have been conducted that can monitor a driver's condition in real time using various biomedical sensors, which can reduce the traffic accident rate during driving by more than about 80%. Sensors implemented using short-range radar technology as a way of monitoring a driver's physical condition have been reported [1][2][3][4][5][6]. This approach using non-contact radar sensors provides a safer way to check a driver's vital signs than the use of conventional biomedical sensors attached to the body.…”

Section: Introductionmentioning

confidence: 99%

A 24-GHz RF Transmitter in 65-nm CMOS for In-Cabin Radar Applications

et al. 2020

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A 24-GHz direct-conversion transmitter is proposed for in-cabin radar applications. The proposed RF transmitter consists of an I/Q up-conversion mixer, an I/Q local (LO) oscillator generator, and a power amplifier. To improve the linearity of the I/Q up-conversion mixer, an inverter transconductor with third-order intermodulation (IM3) distortion cancellation is proposed. To improve the I/Q balancing performance of the I/Q LO generator, a poly-phase filter, including parasitic line inductance, is proposed. By employing a highly linear I/Q up-conversion mixer and a balanced I/Q LO generator, the 24-GHz direct-conversion transmitter achieves high linearity and I/Q balancing characteristics. It is fabricated in a 65-nm CMOS process and consumes 150 mW. It shows an OP1dB of 8.6 dBm, an LO leakage of −48 dBc, and an image rejection ratio of −49 dBc for the entire operating band from 24 GHz to 24.5 GHz.

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A Study of Vital Signs Monitoring Mobility Robot Based on mm-Wave FMCW Radar

Hu,

Peng,

Toda

2024

IEICE Commun. Express

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Most conventional radar-based remote heart rate measurements require the subject to remain stationary. Secondly, the valid measurement range is limited by radar module specifications. Furthermore, the accuracy decreases when the subject is far from the radar. Therefore, this article proposes a novel remote heart rate measurement method based on radar and a mobility robot. The method adaptively adjusts the radar to be in an appropriate measurement range to measure heart rate while the subject walks. The experimental results demonstrate the feasibility of the proposed method.

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Correction: Park, J.-H. et al. 915-MHz Continuous-Wave Doppler Radar Sensor for Detection of Vital Signs. Electronics 2019, 8, 561

Abstract: The authors wish to make the following corrections to the published paper [...]

Cited by 4 publications

References 1 publication

Different Antenna Designs for Non-Contact Vital Signs Measurement: A Review

Different Antenna Designs for Non-Contact Vital Signs Measurement: A Review

A 24-GHz RF Transmitter in 65-nm CMOS for In-Cabin Radar Applications

A Study of Vital Signs Monitoring Mobility Robot Based on mm-Wave FMCW Radar

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