A low-power RF mixer with harmonic cancellation for IEEE 802.15.4 portable, wearable wireless applications

2020 ◽  
Vol 124 ◽  
pp. 153335
Author(s):  
Chrisben Gladson S ◽  
M. Bhaskar
Keyword(s):  
Low Power ◽  
Ieee 802.15.4 ◽  
Wireless Applications ◽  
Harmonic Cancellation

Priority Based Centralized Scheduling for Time Slotted Channel Hopping Based Multihop IEEE 802.15.4 Networks

2020 ◽  
Vol 17 (1) ◽  
pp. 363-372
Author(s):  
K. M. Martin ◽  
B. Seetha Ramanjaneyulu
Keyword(s):  
Low Power ◽  
Ieee 802.15.4 ◽  
Scheduling Algorithms ◽  
Industrial Applications ◽  
Mac Protocols ◽  
Access Methods ◽  
Wireless Applications ◽  
Channel Hopping ◽  
Time Critical ◽  
Ieee 802.15.4E

To meet the growing demands of low power and determinism in Industrial Wireless applications, IEEE defined IEEE 802.15.4e amendment that includes many channel access methods. Time Slotted Channel Hopping protocol is one of the most popular MAC protocols under IEEE 802.15.4e. However, scheduling of time slots for time slotted channel hopping, was not part of the protocol and so different scheduling algorithms were proposed by researchers. A new time slotted channel hopping scheduling mechanism that considers priorities to meet the time critical industrial applications is proposed in this work. Latency improvements of about 40 percentage are obtained here, for slot allocations to higher priority devices, when compared with the conventional queuing methods.

An Ultra-low Power Consumption MAC Protocol Complied with IEEE 802.15.4/4e for Wireless Smart Utility Networks

2016 ◽  
Vol 136 (11) ◽  
pp. 1555-1566 ◽  
Author(s):  
Jun Fujiwara ◽  
Hiroshi Harada ◽  
Takuya Kawata ◽  
Kentaro Sakamoto ◽  
Sota Tsuchiya ◽  
...  
Keyword(s):  
Power Consumption ◽  
Low Power ◽  
Ieee 802.15.4 ◽  
Mac Protocol ◽  
Low Power Consumption ◽  
Ultra Low Power

scholarly journals Characterizing the Impact of Doppler Effects on Body-Centric LoRa Links with SDR

Sensors ◽  
2021 ◽  
Vol 21 (12) ◽  
pp. 4049
Author(s):  
Thomas Ameloot ◽  
Marc Moeneclaey ◽  
Patrick Van Van Torre ◽  
Hendrik Rogier
Keyword(s):  
Wireless Communication ◽  
Low Power ◽  
Multipath Fading ◽  
Doppler Spread ◽  
Excellent Performance ◽  
Wireless Applications ◽  
Doppler Shifts ◽  
Doppler Effects ◽  
The Impact ◽  
Measurement Campaigns

Long-range, low-power wireless technologies such as LoRa have been shown to exhibit excellent performance when applied in body-centric wireless applications. However, the robustness of LoRa technology to Doppler spread has recently been called into question by a number of researchers. This paper evaluates the impact of static and dynamic Doppler shifts on a simulated LoRa symbol detector and two types of simulated LoRa receivers. The results are interpreted specifically for body-centric applications and confirm that, in most application environments, pure Doppler effects are unlikely to severely disrupt wireless communication, confirming previous research, which stated that the link deteriorations observed in a number of practical LoRa measurement campaigns would mainly be caused by multipath fading effects. Yet, dynamic Doppler shifts, which occur as a result of the relative acceleration between communicating nodes, are also shown to contribute to link degradation. This is especially so for higher LoRa spreading factors and larger packet sizes.

A 2.4-GHz Low-Power Low-IF Receiver and Direct-Conversion Transmitter in 0.18-$\mu{\hbox {m}}$ CMOS for IEEE 802.15.4 WPAN Applications

2007 ◽  
Vol 55 (4) ◽  
pp. 682-689 ◽  
Author(s):  
Ilku Nam ◽  
Kyudon Choi ◽  
Joonhee Lee ◽  
Hyouk-Kyu Cha ◽  
Bo-Ik Seo ◽  
...  
Keyword(s):  
Low Power ◽  
Ieee 802.15.4 ◽  
Direct Conversion ◽  
Low If Receiver

scholarly journals Ambient Backscatterers Using FM Broadcasting for Low Cost and Low Power Wireless Applications

2017 ◽  
Vol 65 (12) ◽  
pp. 5251-5262 ◽  
Author(s):  
Spyridon Nektarios Daskalakis ◽  
John Kimionis ◽  
Ana Collado ◽  
George Goussetis ◽  
Manos M. Tentzeris ◽  
...  
Keyword(s):  
Low Power ◽  
Low Cost ◽  
Wireless Applications

scholarly journals A 219-µW ultra-low power low-noise amplifier for IEEE 802.15.4 based battery powered, portable, wearable IoT applications

2021 ◽  
Vol 3 (4) ◽  
Author(s):  
S. Chrisben Gladson ◽  
Adith Hari Narayana ◽  
V. Thenmozhi ◽  
M. Bhaskar
Keyword(s):  
Low Power ◽  
Ieee 802.15.4 ◽  
Low Voltage ◽  
Low Noise ◽  
Low Noise Amplifier ◽  
Cmos Process ◽  
Process Technology ◽  
Ultra Low Power ◽  
Power Mode ◽  
Noise Amplifier

AbstractDue to the increased processing data rates, which is required in applications such as fifth-generation (5G) wireless networks, the battery power will discharge rapidly. Hence, there is a need for the design of novel circuit topologies to cater the demand of ultra-low voltage and low power operation. In this paper, a low-noise amplifier (LNA) operating at ultra-low voltage is proposed to address the demands of battery-powered communication devices. The LNA dual shunt peaking and has two modes of operation. In low-power mode (Mode-I), the LNA achieves a high gain ($$S21$$ S 21 ) of 18.87 dB, minimum noise figure ($${NF}_{min.}$$ NF m i n . ) of 2.5 dB in the − 3 dB frequency range of 2.3–2.9 GHz, and third-order intercept point (IIP3) of − 7.9dBm when operating at 0.6 V supply. In high-power mode (Mode-II), the achieved gain, NF, and IIP3 are 21.36 dB, 2.3 dB, and 13.78dBm respectively when operating at 1 V supply. The proposed LNA is implemented in UMC 180 nm CMOS process technology with a core area of $$0.40{\mathrm{ mm}}^{2}$$ 0.40 mm 2 and the post-layout validation is performed using Cadence SpectreRF circuit simulator.

A Residual Phase Noise Compensation Method for IEEE 802.15.4 Compliant Dual-Mode Receiver for Diverse Low Power IoT Applications

2019 ◽  
Vol 6 (2) ◽  
pp. 3437-3447 ◽  
Author(s):  
Abdullah Zubair Mohammed ◽  
Ajay Kumar Nain ◽  
Jagadish Bandaru ◽  
Ajay Kumar ◽  
D. Santhosh Reddy ◽  
...  
Keyword(s):  
Low Power ◽  
Phase Noise ◽  
Ieee 802.15.4 ◽  
Compensation Method ◽  
Dual Mode ◽  
Noise Compensation ◽  
Iot Applications ◽  
Residual Phase
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