| Summary: | 碩士 === 國立臺灣科技大學 === 電子工程系 === 107 === This thesis presents a 24 GHz non-contact human location and vital-sign detection multi-radar system based on the frequency-modulated continuous wave (FMCW) and the continuous wave (CW) techniques. The system is composed of multiple 24 GHz radar modules. Each radar module includes the radio frequency circuit, baseband circuit and MCU. The portion of radio frequency circuit consists of Infineon BGT24LTR11N16 radar transceiver chip, TI frequency synthesizer, and 2x2 antenna array as transmitting and receiving antennas. The output baseband signals from radar transceiver chip pass through the Bessel high pass filter to suppress the crosstalk interference, and then amplified by inverting amplifier. After that, MCU LinkIt7697 takes in the baseband analog signals and convert to digital signals, then sends the signals through USB or Wi-Fi to computer to perform fast Fourier transform (FFT). The proposed multi-radar system has the ability to locate multiple human targets and monitor their vital sign in the indoor environment.
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