A CMOS self-biased fully differential amplifier is presented. Due to the self-biasing structure of the amplifier and its associated negative feedback, the amplifier is compensated to achieve low sensitivity to process, supply voltage and temperature (PVT) variations. The output common-mode voltage of the amplifier is adjusted through the same biasing voltages provided by the common-mode feedbac...

The research on noise in electron devices has two objectives: (i) The study of specific devices, such as the parametric amplifier and the maser, to determine the physical sources of noise and the limitations they impose on the noise performance of the amplifier. The parametric amplifier with coherent input signals at both the signal and idler frequency, and the degenerate parametric amplifier a...

Current Feedback Amplifiers (CFA) are discussed in this report. Current Feedback Amplifiers employ the current mode of signal processing to achieve higher gain-bandwidth product and greater slew rates than those of a Voltage Feedback Amplifier (VFA). The Current Feedback Amplifier topology has an inherent advantage over that of the the Voltage Feedback Amplifier, wherein the amplifier gain can ...

A new symmetrical topology switching power amplifier is introduced for professional audio use. The amplifier is composed by a pair of semi soft switched half-bridges with independent feedback control. Whole overall layout looks very similar than an already bridge configured stereo amplifier with few exceptions. Although the complexity of the proposed topology is at least twice of the convention...

This report describes the development of a transimpedance amplifier that takes current as input and gives voltage as output. The amplifier consists of three CMOS amplifier stages in a fed-back configuration, achieving a transimpedance gain over 3 kΩ and a 3-dB bandwidth greater than 2.8 GHz. The amplifier operates with a 1.5 V supply voltage and a power budget of 30 mW.

The main difference in topology of a boost bridgeamplifier and state-of-the-art class-D amplifier is in theconnection of a loudspeaker between a power supply and aswitching bridge. The boost bridge amplifier provides fourtimes higher peak power at the loudspeaker than the power,which can be achieved by a class-D amplifier from the samepower supply. Total harmonic distort...

We have developed a large-aperture, flash-lamp-pumped Cr:LiSrAlF(6) (Cr:LiSAF) amplifier for use in a femtosecond chirped-pulse amplifier system. Optimum design of the 19-mm-diameter amplifier results in a single-pass gain of 5 with good beam quality. This amplifier produces 1.05-J pulses after compression, with a width of 125 fs at a repetition rate of 0.05 Hz.

In this paper, we have developed a high power solid-state power amplifier (SSPA) for Sband military radars. The SSPA consists of a high power amplifier (HPA) module combined GaN based power amplifier pallets, a drive amplifier (DA) module, a digital control module and a power supply unit. The SSPA shows the total output power of 62 dBm in S-band.

Large bit-line capacitance is one of the main bottlenecks to the performance of on-chip caches. New sense amplifier techniques need to explicitly address this challenge. This paper describes two sensing techniques to overcome this problem: a current sense amplifier (CSA) and a charge transfer sense amplifier (CTSA) and their implementation based on 90nm CMOS technology. The current sense amplif...

Analysis and simulation are presented of the mismatched load condition for a balanced class-E power amplifier, which is based on 90° hybrids at its input and output. The performances of the 200-Watt balanced class-E amplifier, such as the output power and efficiency, were analyzed and compared to the conventional single-ended class-E power amplifier for the 1:3 VSWR mismatch condition. The simu...