In this paper the recent trends for noise figure are streamlined in concurrence to Ultra Wide Band (UWB) radio transmission spectrum. A comparative study is made between design of single-stage differential low-noise amplifier and inductor-less broadband LNAs in a digital 45 nm CMOS technology. As we move from inductor less impedance to capacitive impedance, the average noise figure decreases in...

It is shown that allpole filters of secondand third-order can be significantly desensitized to component tolerances by so-called impedance tapering, i.e., successively impedance-scaling upwards the Lsections of a resistance–capacitance ladder network in the forward and feedback path of a single-amplifier active filter. In order to obtain a realizable filter, certain constraints on the design eq...

Compared to voltage mode circuits, current circuits have advantages such as large dynamic range, fast speed, wide frequency band, and good linearity. In recent years, the development of call flow modeling technology has been rapid become an important foundation for analog integrated circuits. this paper, a chaotic oscillation circuit based on differential transconductance amplifier (CDTA) is pr...

In this paper, a first-of-a-kind mixed-mode universal filter employing three VDBAs and passive components, is proposed. The operates in all four modes provides five responses, namely voltage-mode (VM), current-mode (CM), trans-impedance-mode (TIM), or trans-admittance-mode (TAM). Additionally, the same topology can also work as CM single-input-multi-output (SIMO) filter. A state-of-the-art comp...

We present a concept of "active material" with variable acoustic properties, being constituted of an electroacoustic transducer which acoustic impedance can be changed by an active mean. Among the different ways to obtain variable acoustic properties on an electroacoustic transducer's voicing face is the shunting of the transducer's electrical input. With such shunt devices, the acoustic impeda...

This paper yields process of development, numerical analysis, lumped circuit modeling, and experimental verification a new hyperchaotic oscillator based on the fundamental topology two-stage amplifier. Analyzed network structure contains two generalized bipolar transistors connected with common emitter. Both are initially modeled as two-ports via full admittance matrix, considering linear backw...

A Microcontroller based digital pH meter was designed and developed to measure the value of pH (acidity or alkalinity) for any type of solution. Two op-amps of high input impedance and low output impedance were used to design the pH meter: one is used as a buffer and the other as a summing amplifier. The output of the summing amplifier is connected to the microcontroller as an input. The pH val...

What is a Low-Noise Amplifier? Digital signal processing (DSP) systems require interfaces to the analog world. The first amplification stage in a radio receiver is typically the tuned low-noise amplifier (LNA), which provides enough amplification to the input signal to make further signal processing insensitive to noise. Although the primary goal in LNA design is to minimize the system noise fi...

How big should the conductors be? The required size (or gauge) of the conductors depends on three factors: (1) the load impedance; (2) the length of cable required; and (3) the amount of power loss that can be tolerated. Each of these involves relationships between voltage (volts), resistance (ohms), current (amperes) and power (watts). These relationships are defined with Ohm’s Law. The job of...

A low-cost embedded system for high-energy radiation detection applications was developed national security proposes, mainly to detect nuclear material and send the event cloud in real time with tracking capabilities. The proof of concept built state-of-the-art electronics such as an adequate Si-based photodetector, a trans-impedance amplifier, ARM Cortex M4 microcontroller sufficient ADC captu...