A 2.4GHz, −102dBm-sensitivity, 25kb/s, 0.466mW interference resistant BFSK multi-channel sliding-IF ULP receiver

Seok, Hyun-Gi; Jung, Oh-Yong; Dissanayake, Anjana; Lee, Sang‐Gug

doi:10.1109/aspdac.2018.8297339

Cited by 1 publication

(1 citation statement)

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“…Especially, the proposed receiver can operate with multiple modulation schemes and improves the previous injection-locking-based receiver [8] in that the strength of the injection signal to the ILO is controlled in a closedloop manner, guaranteeing consistently good performances over a wide range of the receiver input power. Note that the presented receiver IC has been fabricated using a 180-nm technology and operates at 2.4 GHz with 1-V supply voltage, while the other designs in comparison were fabricated in more advanced process technologies except [8], operates at lower frequencies except [6] and [19], and powered by lower supply voltages.…”

Section: Measurement Resultsmentioning

confidence: 99%

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

Hong

Lee

et al. 2020

IEEE Access

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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-todifferential 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. INDEX TERMS Ultra-low power, injection-locked oscillator, injection-locking receiver, multi-modulation, frequency-to-amplitude conversion, phase-to-amplitude conversion, wireless sensor node, internet of things, single-ended-to-differential conversion, Q enhancement, envelope detection. FIGURE 1. ULP receiver architectures: (a) uncertain-IF, (b) low-IF, and (c) injection-locking receivers.

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Section: Measurement Resultsmentioning

confidence: 99%