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- W4382198518 abstract "Abstract In this paper, we present a low-power NMR-on-a-chip system for low-field applications. The transmitter circuit consists of a level-shifted circuit and an H-bridge power amplifier (PA). The transmitter circuit has adjustable output power for multi-field applications, with 52 mW output power at 50 Ω load impedance, while the receiver circuit contains a low-noise amplifier (LNA), a variable gain amplifier (VGA), a down-conversion mixer, and a Variable BW low-pass filter with 19–75 dB link gain and an input reference noise of 0.85(nV/sqrt{Hz}). The on-chip high-digitization frequency synthesizer can steadily generate pulsed signals from 20 to 45MHz (for magnetic field applications from 0.5T to 1T), and the phase noise is measured at -95dBc/Hz at 10KHz offset at a local oscillation frequency of 21.28MHz. buffer connection. The NMR on-chip system designed in this paper is based on the SMIC 0.18µm CMOS process, and the power consumption of the entire receiver side is only 3.89mW at 1.2V supply voltage, and the layout area of the whole system is only 1mm×1.14mm." @default.
- W4382198518 created "2023-06-28" @default.
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- W4382198518 date "2023-06-27" @default.
- W4382198518 modified "2023-09-25" @default.
- W4382198518 title "A Low Power CMOS Transceiver for low-field NMR Spectrometer" @default.
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- W4382198518 doi "https://doi.org/10.21203/rs.3.rs-3064077/v1" @default.
- W4382198518 hasPublicationYear "2023" @default.
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