A 5-pJ/Bit OOK Transmitter Using MEMS-Based RF Oscillator for IoT Application in 180-nm CMOS

Tao, Jingcheng; Wang, Nan; Ng, Eldwin J.; Zhu, Yao; Heng, Chun-Huat

doi:10.1109/lmwc.2021.3107276

Cited by 6 publications

(4 citation statements)

References 17 publications

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“…For example, combining surface and bulk acoustic wave resonators with active CMOS circuits for RF transmitters and receivers has great potential for both ultra-low power consumption (nW to pW) and good noise performance . An 800 MHz on-off keying (OOK) transmitter utilized a MEMS-based RF oscillator for carrier frequency generation, leading to a 120 Mbps data rate with an energy efficiency of 5 pJ b –1 . For receivers, the passive gain approach could be effective in achieving good sensitivity at low power consumption, as demonstrated in high-Q film bulk acoustic resonators .…”

Section: Sensor Connectivitymentioning

confidence: 99%

“…819 An 800 MHz on-off keying (OOK) transmitter utilized a MEMS-based RF oscillator for carrier frequency generation, leading to a 120 Mbps data rate with an energy efficiency of 5 pJ b −1 . 820 For receivers, the passive gain approach could be effective in achieving good sensitivity at low power consumption, as demonstrated in high-Q film bulk acoustic resonators. 821 In addition, emerging techniques like long range (LoRa) 822 and ultra-wideband (UWB) 798,823 are amendable to low-power implementation through spreadspectrum modulation techniques.…”

Section: Sensor Connectivitymentioning

confidence: 99%

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Technology Roadmap for Flexible Sensors

et al. 2023

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Humans rely increasingly on sensors to address grand challenges and to improve quality of life in the era of digitalization and big data. For ubiquitous sensing, flexible sensors are developed to overcome the limitations of conventional rigid counterparts. Despite rapid advancement in bench-side research over the last decade, the market adoption of flexible sensors remains limited. To ease and to expedite their deployment, here, we identify bottlenecks hindering the maturation of flexible sensors and propose promising solutions. We first analyze challenges in achieving satisfactory sensing performance for real-world applications and then summarize issues in compatible sensor-biology interfaces, followed by brief discussions on powering and connecting sensor networks. Issues en route to commercialization and for sustainable growth of the sector are also analyzed, highlighting environmental concerns and emphasizing nontechnical issues such as business, regulatory, and ethical considerations. Additionally, we look at future intelligent flexible sensors. In proposing a comprehensive roadmap, we hope to steer research efforts towards common goals and to guide coordinated development strategies from disparate communities. Through such collaborative efforts, scientific breakthroughs can be made sooner and capitalized for the betterment of humanity.

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Section: Sensor Connectivitymentioning

confidence: 99%

Section: Sensor Connectivitymentioning

confidence: 99%

Technology Roadmap for Flexible Sensors

et al. 2023

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“…For P → ∞, the rate parameter given that x = 1, results in λ DC 1 = 0. By taking into consideration the property that for small values of x applies that exp(−x) ≈ 1 − x, then (39) is derived directly from (34).…”

Section: A DC Combiningmentioning

confidence: 99%

“…Specifically, we succeed this with the use of a maximum likelihood-based (MLbased) soft decoder. At the same time, in order to assure low power consumption and modest complexity, a straightforward choice for the modulation scheme, that we also adopt, is binary on-off keying (OOK) [33], [34], which can also serve as a guideline for other modulation schemes.…”

Section: Introductionmentioning

confidence: 99%

A Detection Scheme for Integrated SWIPT Receivers With Rectenna Arrays

Goudeli

Psomas

Krikidis

2023

IEEE Trans. on Green Commun. Netw.

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Smart devices and their applications led to a rapid evolution of the Internet of Things. As a result, there is an emerging need on energizing those low-power devices, while at the same time achieving information transfer. In this context, simultaneous wireless information and power transfer (SWIPT) is considered as an appealing technology, since it can power wirelessly and remotely such devices, simultaneously with information transfer. Motivated by this, we herein propose a system model with an integrated SWIPT receiver, succeeding enhanced performance in terms of information decoding (ID) and energy harvested (EH). Specifically, we adopt a single input multiple output topology, where at the receiver's side we examine two antenna architectures, one based on the direct-current (DC) combining and the other on the radio-frequency (RF) combining. For both schemes, we consider multiple receive antennas and rectifiers, comparing their performances. Furthermore, we adopt a piece-wise linear EH model, which takes into account the sensitivity and saturation effects of the rectifiers. By using a maximum likelihood-based soft decoding, a non-coherent energy detection is achieved. Finally, an asymptotic analysis is conducted, providing upper and lower bounds for ID and EH, respectively. Simulation results along with theoretical analysis, validate the enhanced performance both in terms of ID and EH.

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