Design of a 900 MHz Dual-Mode SWIPT for Low-Power IoT Devices

Abbasizadeh, Hamed; Kim, SangYun; Rikan, Behnam Samadpoor; Hejazi, Arash; Khan, Danial; Pu, Young Gun; Hwang, Keum Cheol; Yang, Youngoo; Lee, Kang-Yoon

doi:10.3390/s19214676

Cited by 11 publications

(9 citation statements)

References 35 publications

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“…Thus, data rates of 16, 32, and 256 kbps are to be achieved by increasing the digital clock by 64 kHz, 128 kHz, and 1 MHz, respectively. The proposed design of SWIPT is compared with PCB-based SWIPT implementation [36] in Table 1. ASIC-based SWIPT design consumes very low power and area which is desirable for SWIPT operation.…”

Section: Resultsmentioning

confidence: 99%

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A Design of Adaptive Control and Communication Protocol for SWIPT System in 180 nm CMOS Process for Sensor Applications

Rehman

Ali

Khan

et al. 2021

Sensors

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This paper presents an adaptive control and communication protocol (ACCP) for the ultra-low power simultaneous wireless information and power transfer (SWIPT) system for sensor applications. The SWIPT system-related operations depend on harvested radio frequency (RF) energy from the ambient environment. The necessary power for SWIPT system operation is not always available and it depends on the available RF energy in the ambient environment, transmitted RF power from the SWIPT transmitter, and the distance from the transmitter and channel conditions. Thus, an efficient control and communication protocol is required which can control the SWIPT system for sensor applications which mainly consists of a transmitter and a receiver. Multiple data frame structures are used to optimize the exchange of bits for the communication and control of the SWIPT system. Both SWIPT transmitter and receiver are capable of using multiple modulation schemes which can be switched depending on the channel condition and the available RF energy in the ambient environment. This provides support for automatic switching between the time switching scheme and power splitting scheme for the distribution of received RF power in the SWIPT receiver. It also adjusts the digital clock frequency at the SWIPT receiver according to the harvested power level to optimize the power consumption. The SWIPT receiver controller with ACCP is implemented in 180 nm CMOS technology. The RF frequency of the SWIPT operation is 5.8 GHz. Digital clock frequency at the SWIPT receiver can be adjusted between 32 kHz and 2 MHz which provides data rates from 8 to 500 kbps, respectively. The power consumption and area utilization are 12.3 µW and 0.81 mm².

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Section: Resultsmentioning

confidence: 99%

“…As it updates the duty ratio in every frame, it then makes it less efficient. In [ 36 ], a design of duty cycle-based dual mode SWIPT receiver is presented. It is the PCB-based implementation of SWIPT with commercial devices which is not optimized for SWIPT operation.…”

Section: Introductionmentioning

confidence: 99%

A Design of Adaptive Control and Communication Protocol for SWIPT System in 180 nm CMOS Process for Sensor Applications

Rehman

Ali

Khan

et al. 2021

Sensors

Self Cite

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“…Therefore, new SWIPT receiver has to be designed as proposed in refs. [32][33][34] to extend SWIPT in a multi-hop wireless network.…”

Section: Related Workmentioning

confidence: 99%

A Green Routing Protocol with Wireless Power Transfer for Internet of Things

Chiti

Fantacci

Pierucci

2021

JSAN

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The usually constrained resources and lossy links scenarios of Internet of Things (IoT) applications require specific protocol suite, as the IPv6 Routing Protocol for Low-Power and Lossy Networks (RPL). Due to its flexibility, RPL can support efficiently vertical applications such as environmental monitoring, smart city and Industry 4.0. In this paper, we propose a new Objective Function (OF) for RPL based on a composite metric considering jointly the residual energy of a node (parent) together with the energy that a neighbor node (child) can transfer to the parent according to the Wireless Power Transfer (WPT) concept. Specifically, we consider simultaneous wireless information and power transfer (SWIPT) technique, which enables both the energy harvesting and information decoding from the same radio frequency (RF) signal, in order to influence the selection of the best path according to the proposed energy efficient metric in RPL. Performance evaluation on a realistic scenario pointed out a remarkable energy saving to prolong the network lifetime, by selecting the best path toward the sink node, with respect to the OFs usually considered in the literature.

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“…Multitone SWIPT can be realized by arranging the amplitudes, frequencies, phases of each tone or by varying the number of tones [11], [16]- [19]. Among these methods, modulation based on the number of tones is one of the attractive approaches in that it uses PAPR fluctuations by varying the number of tones in the transmitted waveform [20], [21]. These authors revealed the tradeoff between the communication rate and the direct current (DC) supply capability.…”

Section: Introductionmentioning

confidence: 99%

Peak to Average Power Ratio Based Signal Detection for Frequency Shift Multitone SWIPT System

Ikeuchi

Kawahara

2021

IEEE Access

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In this paper, we investigate a multitone simultaneous wireless information and power transfer (SWIPT) based modulation scheme for battery-less Internet of Things (IoT) nodes that works in the ultra high frequency (UHF) region. The conventional SWIPT system is assumed to have power-consuming communication modules. Having such modules on to the IoT nodes whose power is harvested from radio frequency (RF) power sources is too unrealistic. In addition, waveform design from the aspect of power harvesting through SWIPT still has room for consideration. Recent studies have explored multitone based SWIPT to increase the power conversion efficiency (PCE). In these schemes, information is modulated by changing each tone's nature or varying the number of tones. Among these methods, we focused on modulation schemes known as frequency-shift multitone based SWIPT, which shifts frequencies among the tones for information encoding. Unlike previously proposed methods where demodulation requires some power-consuming fast Fourier transfers (FFTs), especially under small communication bandwidths, we applied a signal detection method by measuring output peak to average power ratios (PAPRs) for frequency-shift multitone based SWIPT to reduce power consumption. Based on our analysis, different tone configurations in the frequency domain would yield varieties of nonlinear outputs during the rectification process. In addition, these specific nonlinear output patterns depend on the tone configurations. With this feature, it is possible to demodulate in the time domain at the receiver side using PAPR based measurements, which could eliminate FFT operation. This paper describes how measuring PAPRs enables the detection of signals in theory and validates this through simulations and experiments. We also estimate the communication rates. Based on our results, we achieved 0.46 bits/s/Hz when the number of tones was 6 and estimated that there were (N − 1)(N − 2)/2 + 1 different PAPRs from a given multitone waveform whose number of tones was N .INDEX TERMS Energy harvesting, frequency shift keying, multisine based waveforms, peak to average ratio, simultaneous wireless information and power transfer.

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Design of a 900 MHz Dual-Mode SWIPT for Low-Power IoT Devices

Cited by 11 publications

References 35 publications

A Design of Adaptive Control and Communication Protocol for SWIPT System in 180 nm CMOS Process for Sensor Applications

A Design of Adaptive Control and Communication Protocol for SWIPT System in 180 nm CMOS Process for Sensor Applications

A Green Routing Protocol with Wireless Power Transfer for Internet of Things

Peak to Average Power Ratio Based Signal Detection for Frequency Shift Multitone SWIPT System

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