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...

In this paper, we present current amplifier based transimpedance (TIA) for biosensor applications. Proposed design has low-noise, high Transimpedance gain that can be used low measurement The TIA is implemented in order to resolve the fabrication issues related value feedback resistor. design, input block a amplitude amplifier. designed 90 nm complementary metal-oxide semiconductor (CMOS) techn...

An active antenna for transmitter application in S frequency band is designed and analyzed using harmonic balance technique which is based on the nonlinear model of active devices. In this active antenna, the amplifier is integrated with the radiator which is a rectangular patch antenna. This patch antenna is analyzed employing full-wave momentum method. By applying nonlinear model of transisto...

− A piezoelectric accelerometer output voltage with zero shift was induced by the low-frequency response of the charge amplifier. So we designed a virtual amplifier with same input-output characteristic as the charge amplifier, and shock sensitivities of a piezoelectric accelerometer were evaluated by applying the input acceleration to the virtual amplifier. The shock sensitivities were compara...

This paper describes a simple, inexpensive transimpedance amplifier (TIA) suitable to convert the fast current pulses delivered by photomultiplier tube of night airglow photometer into the corresponding voltage. Design criteria for the transimpedance amplifier are carefully selected to include low input bias current, offset voltage and noise. The operation of the transimpedance amplifier and th...