Analog Integrated Circuits and Signal Processing

This paper presents a new current-mode quadrature oscillator and universal filter that employs two current controlled current follower transconductance amplifiers and two grounded capacitors. The proposed circuit can be realized either as a quadrature ...

An ultra-sharp microstrip composite low-pass filter (LPF) with proper structure using analytical method is proposed. A composite LPF using image parameter method and lumped elements is designed is this paper. Then, quasi-lumped elements, such as: open-...

A compact, low voltage, low power and high frequency voltage mode first order all-pass-filter (APF) topology is presented using carbon nanotube field effect transistor (CNTFET) based inverting voltage buffer. The proposed resistor-less APF topology uses ...

This paper presents the technique of single differential stage op-amp which is used for the active biquad filter design with the inclusion of buffers at the output of op-amp. This procedure provides the advantage of low power and low area requirement ...

A tunable low-pass Gm-C filter with 1 GHz cutoff frequency is presented. The core of this filter is a high frequency low voltage operational transconductance amplifier (OTA) in which CMOS inverters are used. For enhancing the linearity of the filter, a ...

The strategy of improving the group delay in analog filters through the modification of conventional characteristic polynomials is a concept reported in advanced filter design literature. However, at present, this idea has only been approached from a ...

A 14-bit column-parallel two-step successive approximation (SA) analog-to-digital converter (ADC) with digital calibration based on scaled references and redundancy for CMOS image sensors is presented. A 7-bit area-efficient non-binary capacitor array ...

Successive-approximation-register (SAR) ADC has gained popularity owing to its low power consumption in the growing field of ADC development. This work describes such a structure through the use of a novel low offset comparator thereby reducing the non-...

The paper presents current mode Analog to Digital Converters (ADC) for a standard digital CMOS technology in a nm scale. It is shown that such converters composed of a fully differential current mode integrator make it possible to achieve a several-bit ...

In the system of MEMS digital geophone, the mechanical sensing element and post-stage detection circuit are combined to work as the Sigma-Delta (ΣΔ) modulator. The performance of ΣΔ modulator can be improved by cascading electrical integrators behind ...

The necessity of low-power, high-speed, and area proficient data converters makes dynamic cross-coupled latch based comparator more suitable for power efficiency and to maximize speed. In this paper, an investigation on the power of dynamic comparator ...

This paper presents a detailed analysis of squeeze film air damping effects on dynamic responses of RF-MEMS switches under varying environmental conditions, etch holes' configuration and air gap thickness values. The effect operating conditions like air ...

In this paper, a new wideband RF MEMS switch using lateral and vertical actuations has been proposed which can be used for wide frequency band. The switch consists of one side clamped bridge and two electrostatic actuators array which move the bridge ...

This paper presents a new approach to approximate the fractional order derivative of a logarithmic function using the Caputo definition. Further, this approximated fractional derivative has been used to conceptualize and design a multipurpose ASP (...

Nowadays, the requirement of quality videos can increase due to the growth of video coding applications, but most applications affected by motion estimation. Recently block matching (BM) algorithms performed very effective and simple for implementation ...

Multi-Layer Perceptron Neural Network (MLP NN) is one of the most applicable tools in solving complicated problems as well as classifying between target and non-target in sonar applications. In this paper, we use Biogeography-based Optimization (BBO) to ...

In this study, we have investigated whether fractal dimension is a useful non linear feature for distinguishing electroencephalogram (EEG) of cases with encephalopathy from that of normal healthy EEGs. Both Higuchi's fractal dimension and Katz's fractal ...

Automated epileptic seizure detection is essential for advancing epilepsy diagnosis and assisting medical professionals. Automated seizure detection using Electroencephalogram signals has gained significant interest in recent past and appeared to be an ...

An adaptive decision feedback equalizer (DFE) in 0.18 m CMOS process for 2.5 GB/s data rate is proposed in this paper which is comprised of three taps. Adaptive DFE circuit is used for the purpose of automatic inter-symbol interference cancellation in ...

A balanced Colpitts voltage controlled oscillator (VCO) topology with its two implementations in a GaAs heterojunction bipolar transistor (HBT) process is introduced in this paper. A detailed analysis of phase noise, originating from the work by ...

This paper presents an active down-conversion mixer for wireless local area network applications. The proposed down-conversion mixer is designed for 2---3 GHz radio frequency (RF) band and an intermediate frequency of 100 MHz using RF-TSMC CMOS 0.18 ým ...

A new circuit for a simple resistorless quadrature oscillator is proposed in this work. The circuit consists of a single voltage dependant transconductance amplifier block and two grounded capacitors which ease IC fabrication. The workability of the ...