Optokinetic nystagmus (OKN) is a fundamental oculomotor response to retinal slip generated during natural movement through the environment. The timing and amplitude of the compensatory slow phases (SPs) alternating with saccadic quick phases (QPs) are remarkably variable, producing a characteristic irregular sawtooth waveform. We have previously found three stochastic processes that underlie OK...

This p a p e r presents a low power, h i g h ga in and high CMRR ful ly differential ultra-wide bandwidth operational amplifier with wide dynamic range. The design uses two-stage gain, high swing common-mode feedback, ‘doublet-free’ pole-zero cancelation and gm–boosting techniques to increases the unity gain frequency. Design and implementation results for a 1.2GHz, 1.8V supply, fully different...

Recently, the authors introduced two new second-order single-resistance-controlled oscillators (SRCO) employing four/three unity-gain cells (unity-gain voltage followers and unity-gain current followers). In this communication, a novel family of SRCOs has been presented which employ a reduced number of (only two) unity-gain cells as active elements. The workability of the new circuits has been ...

Power consumption is a key point in the design of high-speed switched capacitor (SC) circuits, which efficiently implement a number of analog functions. Among them, SC modulators are very popular for analog-to-digital conversion. In this kind of circuit, operational amplifiers are the most consuming cells because of their requirements in terms of dc-gain and unity-gain frequency. An operational...

In this paper a novel high performance all current-mode fully-differential (FD) Current mode Operational Amplifier (COA) in BIPOLAR technology is presented. The unique true current mode simple structure grants the proposed COA the largest yet reported unity gain frequency while providing low voltage low power operation. Benefiting from some novel ideas, it also exhibits high gain, high common m...

This paper is related with the purpose of distributed coding in the multiple access (MA) phase for two-way relaying communication (TWRC) systems using OFDM. The error probability analysis is organized to establish the diversity and coding Gains for three error categories in the MA phase. Then, the design decided of distributed coding to reaches the maximum diversity and coding gains are given. ...

The development of flexible electronics operating at radio-frequencies (RF) requires materials that combine excellent electronic performance and the ability to withstand high levels of strain. In this work, we fabricate graphene field-effect transistors (GFETs) on flexible substrates from graphene grown by chemical vapor deposition (CVD). Our devices demonstrate unity-current-gain frequencies, ...

This paper presents the design and analysis of high speed, high gain and fully differential operational transconductance amplifier (OTA) implemented in 65-nm digital CMOS process. The OTA, which employ a folded-cascode topology with gain boosting technique, has rail-to-rail input swing and large output swing. The result shows the DC gain of 82 dB and a unity-gain frequency of 477MHz with phase ...

High-frequency distortion in bipolar transistors is examined by using the charge-control approach of Poon and Narayanan to connect the device’s distortion behavior to its “loaded” unity–current–gain frequency (^ ). The resulting expressions for the distortion reveal considerable information on its frequency and bias dependence. Points on the ^ versus collector current curve yielding optimum dis...

A method is presented in this paper for the design of a high frequency CMOS operational amplifier (OpAmp) which operates at 3V power supply using tsmc 0.18 micron CMOS technology. The OPAMP designed is a two-stage CMOS OPAMP followed by an output buffer. This Operational Transconductance Amplifier (OTA) employs a Miller capacitor and is compensated with a current buffer compensation technique. ...