CAVIGLIA , Daniele D.

A low-power, low-voltage universal multi-mode Gm-C filter using a 180 nm TSMC technology node is presented in this paper. The proposed filter employs only three transconductance operational amplifiers (OTAs) operating in the sub-threshold region with a supply voltage of 0.5 V, resulting in a power consumption of 32 nW. Moreover, without...

This study presents computationally efficient implementations of radio frequency (RF) band and baseband receive beamforming and coherent compounding applied to multi-angle plane wave transmission. The impact of the sampling frequency on image quality has been measured by standard metrics on simulated data for both approaches. Moreover, the...

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This paper presents a digital OTA topology with a modified input stage, leveraging a complementary Muller stage and Muller- based current mirrors to increase the linearity. By employing a 180-nm standard CMOS technology and operating with a supply voltage down to 0.3 V, simulations demonstrate a 54.5-dB gain and a 265 Hz gain bandwidth product...

This paper presents an ultra-low-power, low-voltage universal multi-mode Gm-C filter, designed in CMOS technology. The proposed filter uses only three transconductance operational amplifiers (OTAs) operating in a sub-threshold region: this leads to a significant reduction in energy consumption compared to previous solutions...

Accurately characterizing wave energy dynamics in coastal regions is critical for applications ranging from renewable energy assessment to coastal safety and environmental monitoring. This paper introduces an advanced methodology that leverages Frequency Modulated Continuous Wave (FMCW) radar technology, enhanced by ...

Effective Sea state monitoring in coastal zones is crucial for coastal safety and environmental management. This research introduces a methodology leveraging a low-cost Frequency Modulated Continuous Wave (FMCW) radar system to extract comprehensive wave parameter information. By analyzing the received radar signals through 2D...

Sensor nodes have been assigned a lot of tasks in a connected environment that is growing rapidly. The power supply remains a challenge that is not answered convincingly. Energy harvesting is an emerging solution that is being studied to integrate in low power applications such as internet of things (IoT) and wireless sensor networks (WSN). In...

The growth of the IoT infrastructure requires the development of new devices able to harvest energy from the environment to power Wireless Sensor Network (WSN) nodes. Among the available sources (light, mechanical vibrations, temperature differences...), air flow can represent a good choice in many cases: we consider not only a natural wind,...

MOX gas sensors show a wide input resistance variation due to different employed materials, sensor ageing, and temperature variations, when encountering target gases. From the electronics point of view, a wide dynamic range readout interface is needed. The role of the interface is to accommodate the signal received by the sensor in order to be...

The growth of the IoT infrastructure requires the development of new devices able to harvest energy from the environment to power Wireless Sensor Network (WSN) nodes. Among the available sources (light, mechanical vibrations, temperature differences...), air flow can represent a good choice in many cases: we consider not only a natural wind,...

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Evaluating water dynamics, e.g., in near shore regions, is very important for an effective coastal monitoring. This paper introduces a methodology leveraging a cost-effective Frequency Modulated Continuous Wave (FMCW) radar system for sea wave assessment. This approach offers a dependable mechanism to acquire essential insights...

Correct regulation of meteoric surface and subsurface flow waters is a fundamental goal for the sustainable development of the territories. A new system, aimed at real-time monitoring of the rainfall and of the cumulated rainfall, is introduced and discussed in the present paper. The system implements a Sensor Network based on the IoT paradigm...