This paper presents a DC–11GHz CMOS low noise amplifier (LNA) for software-defined radio (SDR). The broadband performance is extended to cover the spectrum from near DC to 11GHz by adopting extra inductors with modified resistive feedback, folded current reuse topology. Bandwidth extension is proposed by inserting pole splitting, interstage and LC ladder inductors. A source follower jointly act...

In this paper a CMOS-based circuit for realization of high-performance current mode current differencing transconductance amplifier (CDTA) is demonstrated. This circuit provides the advantage of a wide frequency bandwidth and very small input terminal impedance. Some voltage and current mode applications using this element have already been reported in literature .It provides linear and non-lin...

Sense amplifiers plays an important role in memories like Dynamic Random Access (DRAM) and Static Random Access (SRAM) for read and write operations. A sense amplifier compares the bit line voltage and its complement amplifies it to rail to rail output voltages. In this project, we mainly concentrated on the write operation. Sense amplifier is one of the peripheral circuits in memories that are...

A sensitive electrochemical self-assembled peptide based biosensor was developed for detection of caspase 3 activity and apoptosis using the Asp-Glu-Val-Asp (DEVD) modified peptide and horseradish peroxidase (HRP) as cleaving and electron transfer (current amplifier) agents, respectively. Streptavidin coated magnetic beads (MB) were used to increase the loading efficiency of HRP on the DEVD mod...

A new design of a cryogenic linear 22-pole ion trap has been constructed and tested. It is essentially a copper housing to which opposite inner walls two electrode sets are attached via sapphire insulators. These stainless steel electrodes are electroformed in one piece to guarantee good heat conduction. Connected to an external coil, they form an LC-circuit of about 19 MHz resonance frequency....

Recordings from CA1 pyramidal cells were made in rat hippocampal slices (in vitro). Activation of cholinergic receptors associated with tetanization of GABAergic inputs from stratum pyramidale transformed the hyperpolarizing GABA-mediated inhibitory postsynaptic potentials into depolarizing responses of rat hippocampal CA1 pyramidal neurons. The synaptic transformation was characterized by a si...

This paper presents a new mixed-mode thirdorder quadrature oscillator based on new modified current-controlled current follower transconductance amplifier (MCCFTA). The proposed circuit employs one MCCFTA as active element and three grounded capacitors as passive components which is highly suitable for integrated circuit implementation. The condition and frequency of oscillations can be control...

Procedural geometry paradigms are analyzed and classified as either “data amplifier” or “lazy evaluation.” Lazy evaluation reduces the size of the geometric representation passed to renderers and increases the flexibility of procedural experimentation. Several existing procedural geometry systems are compared in this light, and a new one is proposed, called procedural geometric instancing. Insp...

A design strategy for minimizing a feedback amplifier’s step-response settling time is introduced. Central to this approach is the clear identification of the independent design parameters characterizing the amplifier and the introduction of a figure of merit for assessing the settling performance of an amplifier that is independent of power, supply voltage and capacitive loading. With this app...

The design of a CMOS operational mirrored amplifier (OMA) suitable for high frequency applications is proposed. The CMOS operational mirrored amplifier is developed using class AB operational amplifier and two current mirrors. To obtain a wide bandwidth and high stability, HF feedforward techniques have been used. These techniques made the proposed circuit suitable for continuous – time analog ...