2013
DOI: 10.1109/tmtt.2013.2247055
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Six-Port Radar Sensor for Remote Respiration Rate and Heartbeat Vital-Sign Monitoring

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Cited by 150 publications
(76 citation statements)
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“…They explained that this was due to a frequency component called the harmonics in the spectrum, which was neither the respiration nor heartbeat component. In contrast, Wang et al [21] measured heartbeats from the four sides of a seated subject's torso and concluded that the frontal chest wall was better than the back side, which is inconsistent with the studies of [19] and [20]. The different conclusions were explained by Wang et al as being due to the different operating frequencies (15 GHz [21] versus 27 GHz [19]) and the direct current (DC) suppression algorithm proposed by [21], which suppressed the harmonic components generated by incorrect DC levels.…”
mentioning
confidence: 89%
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“…They explained that this was due to a frequency component called the harmonics in the spectrum, which was neither the respiration nor heartbeat component. In contrast, Wang et al [21] measured heartbeats from the four sides of a seated subject's torso and concluded that the frontal chest wall was better than the back side, which is inconsistent with the studies of [19] and [20]. The different conclusions were explained by Wang et al as being due to the different operating frequencies (15 GHz [21] versus 27 GHz [19]) and the direct current (DC) suppression algorithm proposed by [21], which suppressed the harmonic components generated by incorrect DC levels.…”
mentioning
confidence: 89%
“…Recently, much attention has been paid to the remote monitoring of heartbeats using radar systems [5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23] that measure the slight displacement of a patient's skin surface due to heartbeats. However, patients in an MR scanner are surrounded by the interior wall of the scanner, with only the top of their head and soles seen from the outside.…”
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confidence: 99%
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“…It has been shown that a six-port based radar system can be used as a radar microphone analyzing the movement of a loudspeaker membrane [22], or even detecting the heartbeat and breathing rate of a person [23]. The big advantage of high resolution distance analysis compared to common Doppler radar approaches is that also very low velocities up to zero 14 movement can be detected as well as aperiodic and pulse-like movements.…”
Section: (V) Q (V) I (V)mentioning
confidence: 99%
“…It is the core module in AM-AM and AM-PM test. In the medical field, six-port measurement technology can be found in remote respiration and heartbeat monitoring sensor [6], as well as in absorption measurements of biological sample [7].…”
Section: Introductionmentioning
confidence: 99%