2020
DOI: 10.3390/electronics9122005
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A 24-GHz RF Transmitter in 65-nm CMOS for In-Cabin Radar Applications

Abstract: 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 … Show more

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Cited by 6 publications
(2 citation statements)
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“…In contrast, when the mm-wave transmitter is based on the direct conversion architecture, they all presented the I/Q calibrations [2,[5][6][7]. One exception is that Lee et al have demonstrated decent performance without calibration [4], but it is very likely to suffer from severe degradation when process non-uniformity and variation are taken into account in mass production. The previous amplitude mismatch calibration techniques employed in [2,[5][6][7] include the digital baseband calibration, RF amplifier gain calibration, and baseband amplifier gain interpolation.…”
Section: Implementation Resultsmentioning
confidence: 99%
“…In contrast, when the mm-wave transmitter is based on the direct conversion architecture, they all presented the I/Q calibrations [2,[5][6][7]. One exception is that Lee et al have demonstrated decent performance without calibration [4], but it is very likely to suffer from severe degradation when process non-uniformity and variation are taken into account in mass production. The previous amplitude mismatch calibration techniques employed in [2,[5][6][7] include the digital baseband calibration, RF amplifier gain calibration, and baseband amplifier gain interpolation.…”
Section: Implementation Resultsmentioning
confidence: 99%
“…Millimeter-wave radar has received extensive attention in many areas such as in-cabin monitoring [1], automotive [2], unmanned aerial vehicle [3], and healthcare [4] applications. Many applications of millimeter-wave radars need to extract weak signals in complex noise environments by reducing and filtering noise to improve radar performance.…”
Section: Introductionmentioning
confidence: 99%