Enhanced Interference Rejection Bluetooth Low-Energy Back-Channel Receiver With LO Frequency Hopping

Alghaihab, Abdullah; Shi, Yao; Breiholz, Jacob; Kim, Hun-Seok; Calhoun, Benton H.; Wentzloff, David D.

doi:10.1109/jssc.2019.2907160

Cited by 23 publications

(17 citation statements)

References 11 publications

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“…Since the weight of the payload has an upper limit of about 0.28g, we would like to consider carrying two functions with one transistor by the following two methods, and conduct verification experiments in the future. Many papers on techniques for multiplexing with one device and quadrature modulation have been published in the past [23][24][25][26][27][28][29][30][31][32][33][34][35].…”

Section: Multi-functionalization With Limited Weightmentioning

confidence: 99%

Technical Evaluation of Engineering Model of Ultra-Small Transmitter Mounted on Sweetpotato Hornworm

Nakajima¹,

Muraki²,

Mitsuhashi³

et al. 2022

J Multimed Inf Syst

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The authors are making a prototype flexible board of a radio-frequency transmitter for measuring an electromyogram (EMG) of a flying moth and plan to apply for an experimental station license from the Ministry of Internal Affairs and Communications of Japan in the summer of 2022. The goal is to create a continuous low-dose exposure standard that incorporates scientific and physiological functional assessments to replace the current standard based on lethal dose 50. This paper describes the technical evaluation of the hardware. The signal of a bipolar EMG electrode is amplified by an operational amplifier. This potential is added to a voltage-controlled crystal oscillator (27 MHz, bandwidth: 4 kHz), frequency-converted, and transmitted from an antenna about 10 cm long (diameter: 0.03 mm). The power source is a 1.55-V wristwatch battery that has a total weight of about 0.3 g (one dry battery and analog circuit) and an expected operating time of 20 minutes. The output power is −7 dBm and the effective isotropic radiated power is −40 dBm. The signal is received by a dual-whip antenna (2.15 dBi) at a distance of about 100 m from the moth. The link margin of the communication circuit is above 30 dB within 100 m. The concepts of this hardware and the measurement data are presented in this paper. This will be the first biological data transmission from a moth with an official license. In future, this telemetry system will improve the detection of physiological abnormalities of moths.

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Section: Multi-functionalization With Limited Weightmentioning

confidence: 99%

Technical Evaluation of Engineering Model of Ultra-Small Transmitter Mounted on Sweetpotato Hornworm

Nakajima¹,

Muraki²,

Mitsuhashi³

et al. 2022

J Multimed Inf Syst

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show abstract

“…A further approach to improving the RF gain is the implementation of the IMN with a passive voltage gain. This method, however, requires off-chip high-Q components which hinder the system integration [22,31].…”

Section: Frequency-conversion Receiversmentioning

confidence: 99%

“…Thus, the IF bandwidth is usually loosened to relax the local oscillator (LO) frequency accuracy requirement. The FC receivers without the PLL are known as uncertain-IF receivers which can be found in [15,21,22,32,33].…”

Section: Frequency-conversion Receiversmentioning

confidence: 99%

“…Moreover, since such high-Q passive components are only available at lower frequencies ≤2. 4 GHz, state-of-the-art WuRXs have been designed also in these frequencies, for instance, 400 − 500-MHz WuRXs from [10,12,13,[16][17][18][19] and 2.4-GHz WuRXs from [6,[20][21][22][23][24]. Nevertheless, the antenna size for such low-frequency WuRXs or related transceivers has to be large to maintain sufficient gain, thus limiting the system integration.…”

Section: Introductionmentioning

confidence: 99%

“…4 GHz, the related RF channels haven been confronted with saturated traffic conditions leading to in-band data collision, out-of-band interference, hence higher false alarm rate of the WuRXs and prolonged communication latency. This issue could be addressed on the level of medium access protocols (MAC), for instance, WuRX-based MAC protocols proposed in [25,26], and/or by designing WuRXs with higher robustness against interference such as [16,17,[20][21][22]. However, all these approaches increase the system complexity and cost and do not substantially resolve the channel saturation issue.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A 5.5–7.5‐GHz band‐configurable wake‐up receiver fully integrated in 45‐nm RF‐SOI CMOS

Protze

Ellinger

2022

IET Circuits, Devices & Syst

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This work investigates a 5.5–7.5‐GHz band‐configurable duty‐cycled wake‐up receiver (WuRX) fully implemented in a 45‐nm radio‐frequency (RF) silicon‐on‐insulator (SOI) complementary‐metal‐oxide‐semiconductor (CMOS) technology. Based on an uncertain intermediate frequency (IF) super‐heterodyne receiver (RX) topology, the WuRX analogue front‐end (AFE) incorporates a 5.5–7.5‐GHz band‐tunable low‐power low‐noise amplifier, a low‐power Gilbert mixer, a digitally controlled oscillator (DCO), a 100‐MHz IF band‐pass filter (BPF), an envelope detector, a comparator, a pulse generator and a current reference. By application of duty cycling with a low duty cycle below 1%, the power consumption of the AFE was significantly reduced. In addition, the on‐chip digital bank‐end consists of a frequency divider, a phase corrector, a 31‐bit correlator and a serial peripheral interface. A proof‐of‐concept WuRX circuit occupying an area of 1200 μm by 900 μm has been fabricated in a GlobalFoundries 45‐nm RF‐SOI CMOS technology. Measurement results show that at a data rate of 64 bps, the entire WuRX consumes only 2.3 μW. Tested at 8 operation bands covering 5.5–7.7 GHz, the WuRX has a measured sensitivity between −67.5 dBm and −72.4 dBm at a wake‐up error rate of 10−3. With the sensitivity unchanged, the data rate of the WuRX can be scaled up to 8.2 kbps. To the authors' best knowledge, this work offers the largest RF bandwidth from 5.5 to 7.5 GHz, the most operation channels (≥8) and the fastest settling time (<115 ns) among the WuRXs reported to date.

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Ultra-low power, high-data rate, fully on-chip radio frequency on-off keying receiver for internet-of-things applications

Boora,

Thangarasu,

Yeo

2024

Commun Eng

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Despite the enormous potential of energy-efficient receivers for wireless sensor networks, the large power consumption or limited data rate support impedes its extensive applications. Here, we present an energy-efficient, ultra-low power, higher data rate supporting, completely on-chip radio-frequency receiver frontend for on-off keying modulated signals in the 2.4 GHz industrial, scientific, and medical band. This compact-sized receiver is achieved by implementing temperature-resilient oscillator, pseudo-differential mixer, and a wideband detector while avoiding bulky external components such as bulk-acoustic wave resonators, crystal oscillators. Measurement results demonstrate that the proposed on-off keying receiver can decode low power level radio-frequency signals up to 5 Mbps data rate while consuming only 178 µW power. This work also demonstrates support for lower data rates at reduced power. Since the proposed receiver operates in different power modes, it can be integrated in diverse applications including internet-of-things devices and continuously monitoring biomedical/wearable implants.

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Enhanced Interference Rejection Bluetooth Low-Energy Back-Channel Receiver With LO Frequency Hopping

Cited by 23 publications

References 11 publications

Technical Evaluation of Engineering Model of Ultra-Small Transmitter Mounted on Sweetpotato Hornworm

Technical Evaluation of Engineering Model of Ultra-Small Transmitter Mounted on Sweetpotato Hornworm

A 5.5–7.5‐GHz band‐configurable wake‐up receiver fully integrated in 45‐nm RF‐SOI CMOS

Ultra-low power, high-data rate, fully on-chip radio frequency on-off keying receiver for internet-of-things applications

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