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

Title
A Multi-Mode ULP Receiver Based on an Injection-Locked Oscillator for IoT Applications
Authors
Hong, SoonyoungLee, Se HwanLee, JunghyupJe, Min Kyu
DGIST Authors
Hong, Soonyoung; Lee, Se Hwan; Lee, Junghyup; Je, Min Kyu
Issue Date
2020-04
Citation
IEEE Access, 8, 76966-76979
Type
Article
Article Type
Article
Author Keywords
Ultra-low powerinjection-locked oscillatorinjection-locking receivermulti-modulationfrequency-to-amplitude conversionphase-to-amplitude conversionwireless sensor nodeinternet of thingssingle-ended-to-differential conversionQ enhancementenvelope detection
Keywords
SENSORTRANSCEIVERCONVERSIONRF
ISSN
2169-3536
Abstract
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-μm 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 μW in total.
URI
http://hdl.handle.net/20.500.11750/11877
DOI
10.1109/ACCESS.2020.2989192
Publisher
Institute of Electrical and Electronics Engineers Inc.
Related Researcher
  • Author Lee, Junghyup Integrated Nano-Systems Laboratory
  • Research Interests Analog and Mixed Signal IC Design; Smart Sensor Systems; Bio-medical ICs and Body Channel Communication Systems
Files:
Collection:
Department of Information and Communication EngineeringIntegrated Nano-Systems Laboratory1. Journal Articles


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