Implementation Of Low Noise Research Articles

Effects of Noise Pollution on Residents Living in Birzebbuga and the Introduction of Effective Mitigation Measures

There exists a direct influence of noise pollution on people's quality of life which can lead to several short and long-term health consequences. This paper presents the first phase of a mixed-method study conducted to understand the effects of noise pollution on residents living in Birzebbuga, Malta, followed by a second phase project completed in 2021. A questionnaire was completed by 477 inhabitants to obtain demographic information and data about noise pollution, its influence on residents' activities, and noise source discomfort. The study utilised the International Commission on the Biological Effects of Noise's five-scale technique to quantify noise irritation. The survey took place between February and May 2021. Data reported that in 98% of the participants noise pollution is a problem. 61.6% of respondents reported noise annoyance as the main category of pollution on health and well-being, followed by sleeping disorders and fatigue, stress, nervousness, loss of concentration, headaches and reduced ability to work. Given high levels of noise and the effects on the quality of life of residents, this study concludes that noise reduction regulations are a must, and a permanent sound monitoring network within the district of Birzebbuga is a crucial component for an effective low-noise implementation plan.

A 1.2 V Low-Power CMOS Chopper-Stabilized Analog Front-End IC for Glucose Monitoring

A low-power 1.2 V CMOS chopper-stabilized analog front-end integrated circuit (IC) for glucose monitoring is presented in this letter. The operating parameters of the IC, including reference voltage in potentiostat, current offset, output gain, and offset, are fully programmable. The IC is fabricated using 0.13- $\mu \text{m}$ CMOS technology, has an active area of $1.4\,\,\text {mm} \times 4.3$ mm, and its power consumption is $30.2~\mu \text{W}$ . Furthermore, a chopper-stabilized open-loop transimpedance amplifier is proposed for low-power and low-noise implementation. The integrated input-referred current noise is 260 pArms with a bandwidth of 100 Hz.

A ΣΔ micro accelerometer with 6 µg/√Hz resolution and 130 dB dynamic range

This paper reports the implementation of a low noise, high dynamic-range ΣΔ readout for low cost capacitive Micro-Electro-Mechanical Systems (MEMS) accelerometers. The readout circuit sets the bandwidth of the ΣΔ loop through an extra feedback path, and hence allows the closed loop system to operate with the low noise characteristics similar to a second-order ΣΔ analog-to-digital converter. A thorough noise analysis of the proposed accelerometer shows that the mechanical noise is the most significant source and quantization noise is mostly eliminated. Dynamic range (DR) of the system is improved by minimizing the circuit noise and increasing the full scale range (FSR) by high-voltage pulse feedback. Utilization of these techniques allows the implementation of low cost, low noise, and high DR navigation-grade accelerometers, by eliminating the need for large proof mass, large area MEMS sensors. The proposed system can achieve a minimum of 6.0 µg/?Hz noise floor, 3.2 µg bias instability, and a maximum of 130 dB DR at 1 Hz. A FSR of ±20 g is reported for 6.2 µg/?Hz noise floor. This range can be increased up to ±40 g at the cost of noise performance and DR.