A Fully On-Chip 80-pJ/b OOK Super-Regenerative Receiver With Sensitivity-Data Rate Tradeoff Capability

Rezaei, Vahid Dabbagh; Entesari, Kamran

doi:10.1109/jssc.2018.2793533

Cited by 20 publications

(12 citation statements)

References 30 publications

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“…10(b). From (20) and (22), we can find that ω 0 is higher than ω inv . Therefore, the feedback network causes a phase shift of 180 • at ω 0 , which is added to the phase inversion generated by the MOS transistor, leading to a total phase shift of 360 • along the loop.…”

Section: Circuit Implementation a Rf Front-endmentioning

confidence: 95%

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: Circuit Implementation a Rf Front-endmentioning

confidence: 95%

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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“…To improve the SR receiver selectivity, compensation of its center deviation is required. There are several methods currently used to calibrate the oscillating frequency of the SRO using PLL [4,5] and FLL [6]. However, all of them are infeasible to conduct background frequency calibration as the reason described below.…”

Section: Pll With Random Initial Phase Errormentioning

confidence: 99%

“…Beside the components illustrated in Figure 3a, the proposed PLL includes an initial phase error reducing circuit (IPERC), a comparator (COM) used to trigger frequency calibration periodically, a divider (CT1) employed to generate a synchronized reference clock Clk ref from the input clock Clk in , and an analog OTA-based buffer to drive the varactors and hold the charge on the capacitor C 1 . Unlike the above mentioned PLL or FLL techniques in References [4,6] that interrupt the receiving phase to perform frequency calibration, the proposed PLL can perform frequency calibration without disturbing the data receiving. When the envelope detector output V ED goes high, exceeding a preset threshold voltage V TH , the output EN of comparator COM in PLL turns high accordingly to enable PLL to detect the frequency difference between the SRO output frequency and the desired one, and tune the SRO center frequency via the voltage V tune .…”

Section: Quenching Signal Analysis Under Pvt Variationsmentioning

confidence: 99%

“…Recently, several frequency calibration techniques have been proposed for SR receivers using a phase-locked-loop (PLL) [4,5] or a counter-based frequency-locked-loop (FLL) [6] as shown in Figure 1b. Although these techniques can calibrate the SRO to the expected center frequency, they have to interrupt receiving of the input OOK data stream.…”

Section: Introductionmentioning

confidence: 99%

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A PVT-Robust Super-Regenerative Receiver with Background Frequency Calibration and Concurrent Quenching Waveform

Yin

El‐Sankary

2019

Electronics

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A process-voltage-temperature (PVT)-robust, low power, low noise, and high sensitivity, super-regenerative (SR) receiver is proposed in this paper. To enable high sensitivity and robust-PVT operation, a fast locking phase-locked-loop (PLL) with initial random phase error reduction is proposed to continuously adjust the center frequency deviations of the SR oscillator (SRO) without interrupting the input data stream. Additionally, a concurrent quenching waveform (CQW) technique is devised to improve the SRO sensitivity and its noise performance. The proposed SRO architecture is controlled by two separate biasing branches to extend the sensitivity accumulation (SA) phase and reduce its noise during the SR phase, compared to the conventional optimal quenching waveform (OQW). The proposed SR receiver is implemented at 2.46 GHz center frequency in 180 nm SMIC CMOS technology and achieves better sensitivity, power consumption, noise performance, and PVT immunity compared with existent SR receiver architectures.

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“…Additionally, electroencephalogram (EEG), electrocardiogram (ECG), electromyography (EMG), and implanted devices are some of the other uses of biomedical devices through the 5G wireless networks [12]. Typically, there are two license-free distant operations of medical devices introduced by medical implant communication system (MICSs) and industrial, scientific and medical (ISM) bands, where the frequency range of MICS is 402-405 MHz and for the ISM band is 902-928 MHz, 2.4-2.5 GHz, and 5.725-5.875 GHz [13,14]. Biomedical devices, especially implanted medical devices, can be equipped with wireless systems, including (i) electronic circuits and (ii) antennas for exchanging and transferring data between various apparatuses [15,16].…”

Section: Introductionmentioning

confidence: 99%

Magic of 5G Technology and Optimization Methods Applied to Biomedical Devices: A Survey

2022

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Wireless networks have gained significant attention and importance in healthcare as various medical devices such as mobile devices, sensors, and remote monitoring equipment must be connected to communication networks. In order to provide advanced medical treatments to patients, high-performance technologies such as the emerging fifth generation/sixth generation (5G/6G) are required for transferring data to and from medical devices and in addition to their major components developed with improved optimization methods which are substantially needed and embedded in them. Providing intelligent system design is a challenging task in medical applications, as it affects the whole behaviors of medical devices. A critical review of the medical devices and the various optimization methods employed are presented in this paper, to pave the way for designers to develop an apparatus that is applicable in the healthcare industry under 5G technology and future 6G wireless networks.

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A Fully On-Chip 80-pJ/b OOK Super-Regenerative Receiver With Sensitivity-Data Rate Tradeoff Capability

Cited by 20 publications

References 30 publications

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

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

A PVT-Robust Super-Regenerative Receiver with Background Frequency Calibration and Concurrent Quenching Waveform

Magic of 5G Technology and Optimization Methods Applied to Biomedical Devices: A Survey

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