[논문]A Multi-Mode ULP Receiver Based on an Injection-Locked Oscillator for IoT Applications

Hong, Soonyoung; Lee, Sehwan; Lee, Junghyup; Je, Minkyu

doi:10.1109/access.2020.2989192

[해외논문] A Multi-Mode ULP Receiver Based on an Injection-Locked Oscillator for IoT Applications 원문보기

IEEE access : practical research, open solutions, v.8, 2020년, pp.76966 - 76979

Hong, Soonyoung (Department of Information and Computer Engineering, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu, South Korea) , Lee, Sehwan (Department of Information and Computer Engineering, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu, South Korea) , Lee, Junghyup (Department of Information and Computer Engineering, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu, South Korea) , Je, Minkyu (School of Electrical Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, South Korea)

Abstract ▼ AI-Helper

This paper presents an ultra-low-power receiver based on the injection-locked oscillator (ILO), which is compatible with multiple modulation schemes such as on-off keying (OOK), binary frequency-shift keying (BFSK), and differential binary phase-shift keying (DBPSK). The receiver has been fabricated in 0.18- $\mu \text{m}$ CMOS technology and operates in the ISM band of 2.4 GHz. A simple envelope detection can be used even for the demodulation of BFSK and DBPSK signals due to the conversion capability of the ILO from the frequency and phase to the amplitude. In the proposed receiver, a $Q$-enhanced single-ended-to-differential amplifier is employed to provide high-gain amplification as well as narrow band-pass filtering, which improves the sensitivity and selectivity of the receiver. In addition, a gain-control loop is formed in the receiver to maintain constant lock range and hence frequency-to-amplitude conversion ratio for the varying power of the BFSK-modulated receiver input signal. The receiver achieves the sensitivity of −87, −85, and −82 dBm for the OOK, BFSK, and DBPSK signals respectively at the data rate of 50 kb/s and the BER lower than 0.1% while consuming the power of $324~\mu \text{W}$ in total.

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DOI : 10.1109/ACCESS.2020.2989192 [무료]
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