This brief presents a comprehensive study on particular kind of conveyor called second-generation voltage (VCII). building block is based conveying concept and the dual second generation current (CCII). It shown that VCII very useful in those configurations where CCII limited, terms number active blocks. The results this are helpful choosing best between for each specific application. Finally, first time, CMOS implementation also presented. Simulation with PSPICE using 0.35-μm technology...

In this article, new voltage-output filter realizations based on second generation voltage conveyor (VCII) as basic building block are presented. The results of study show that VCII is a suitable candidate for applications requiring output signal, considering the availability low impedance terminal in makes unnecessary use extra buffers at output, resulting implementations with simpler structure, reduced power consumption, and chip area. New configurations filters first order low-pass (LP),...

The authors here propose an analog interface for differential capacitance estimation, able to reveal and quantify capacitive variations. Different from other works in the literature, proposed can operate on a full-range scale. This solution takes inspiration preliminary work of same authors, whose working principle is based modified De-Sauty AC bridge configuration; particular, two (differential) capacitors resistors are employed, one which implemented by voltage-controlled resistor (VCR)....

The development of Internet Things (IoT) systems is a rapidly evolving scenario, thanks also to newly available low-power wide area network (LPWAN) technologies that are utilized for environmental monitoring purposes and prevent potentially dangerous situations with smaller less expensive physical structures. This paper presents the design, implementation test results flood-monitoring system based on LoRa technology, tested in real-world scenario. entire designed modular perspective, order...

In this brief, a new circuit topology to realize an electronically tunable grounded capacitor multiplier with extremely low power consumption and supply voltage requirement is investigated. The proposed uses second generation conveyor (VCII) single floating capacitor. Owing the translinear principle, current gain of VCII varied through control and, as result, value simulated also varied. Favorably obtained temperature insensitive. Both required currents are very because all transistors...

Rockfalls and landslides are hazards triggered from geomorphological climatic factors other than human interaction. The economic social impacts not negligible, therefore the topic has become an important field in application of remote monitoring. Wireless sensor networks (WSNs) particularly suited for deployment such systems, thanks to different technologies topologies that evolving nowadays. Among these, LoRa modulation technique represents a fitting technical solution nodes communication...

This paper presents a novel transistor-level design of modified second-generation voltage conveyor (VCII), which incorporates two differential current inputs (Y+ and Y−) gives output at terminal X that mirrors the sum these currents. The circuit operation is based on maintain in stable “quiescent” state when no applied Y+ Y−. When flows into one inputs, mirrored X, providing summed measurement. design, developed standard 0.35 μm CMOS transistors technology, ensures high accuracy robustness....

Summary In this paper, an integrable novel fully analog Wheatstone bridge‐based interface for differential capacitance estimation is presented. Its working principle takes advantage of the modified De‐Sauty AC bridge configuration being employed only by two capacitors and resistors. A feedback loop controls one resistors (e.g. a voltage‐controlled resistor), to obtain evaluation variation on full range, thanks general but very simple formula that considers both ‘auto‐balancing’...

This paper deals with the definition and analysis of a complete electronic system for detection monitoring stability characteristics in complex scenarios such as structural elements or environmental events. For instance, it may be successfully adopted to detect rockfall events on protection barriers, well monitor landslides integrity structures like bridges buildings. The is completely autonomous thanks implementation an energy harvesting architecture realizes wireless sensor network whose...

In this paper, a new low-voltage low-power dual-mode universal filter is presented. The proposed circuit implemented using inverting current buffer (I-CB) and second-generation voltage conveyors (VCIIs) as active building blocks five resistors three capacitors passive elements. in single-input multiple-output (SIMO) structure can produce second-order high-pass (HP), band-pass (BP), low-pass (LP), all-pass (AP), band-stop (BS) transfer functions. outputs are available signals at low impedance...

A new low-voltage low-power class-AB second generation voltage conveyor (VCII) is presented. The proposed circuit based on an improved flipped follower (FVF) designed by adding a simple negative feedback loop to the conventional circuit. This modification ensures high current drive capability of at least 2 mA for both falling and rising edges input signal along with very low 2-mΩ output impedance accuracy. Benefiting from FVF, VCII features implementation, extremely Y Z terminals (2 mQ), X...

In this paper, a new realization of electronically controllable positive and negative floating capacitor multiplier (±C) is presented. The peculiarity the presented topology that, for first time, it implements equivalent between its two input terminals, rather than grounded one. To achieve best performance, we simultaneously use advantages provided by current conveyor dual circuit, voltage conveyor. proposed resistor free employs one dual-output second-generation (VCII±) tunable differential...

In this paper two new first order filter topologies realizing low-pass/all-pass (LP/AP) and low-pass/high-pass (LP/HP) outputs using electronically controllable second generation voltage conveyors (CVCIIs) are presented. Unlike (VCII), in CVCII each performance parameter, including ports, parasitic impedances, current and/or gains can be varied. Here, particular, the proposed based on CVCIIs, one resistor capacitor. topology VLP/IAP/VAP ILP/VLP/IHP/VHP achievable, respectively. However, not...

This paper presents a new realization of grounded simulated inductor using single dual output second-generation voltage conveyor (VCII±) as an active building block, two resistors and one capacitor. The main characteristic the proposed circuit is that value series resistor can be significantly reduced. Thus, it has property improved low-frequency performance. Another feature use capacitor makes attractive for integrated (IC) realization. A simple CMOS implementation required VCII± used....

The use of wearable sensors for health monitoring is rapidly growing. Over the past decade, technology has gained much attention from tech industry commercial reasons and interest researchers clinicians related to its potential benefit on patients’ health. Wearable devices advanced specialized able monitor not only activity parameters, such as heart rate or step count, but also physiological electrical blood pressure. Electrocardiogram (ECG) becoming one most attractive health-related...

The authors here propose, for the first time, an automatic analog interface differential capacitance estimation, able to reveal and quantify both low high (full-range) capacitive variations. working principle is based on a modified De-Sauty AC bridge configuration where two capacitances resistances are employed, one of which implemented by Voltage Controlled Resistor (VCR). Through suitable feedback loop, very accurate estimation over complete range variation possible, while allows...

In this paper, a novel approach to implement stray insensitive CMOS interface for differential capacitive sensors is presented. The proposed circuit employs, the first time, second-generation voltage conveyors (VCIIs) and produces an output proportional capacitor changes. Using VCIIs as active devices inherently allows process signal in current domain, hence, benefit from its intrinsic advantages, such high speed simple implementation, while still being able natively with mode processing...