In recent time, the demand for Darlington pair amplifier for high data rate communication system has been appreciated and highlighted. The application of Darlington pair amplifier is supported in a condition, where requirement of high gain at a low frequency is applicable. Recently, Darlington pair amplifier has been testified with high gain bandwidth product for current applications. If we nee...

In this paper, we compare two X-band highefficiency switched-mode amplifiers designed around two commercially available packaged MESFET’s, one having a four times larger gate periphery than the other. The amplifiers using the larger and smaller devices are designed to operate in classes E and F, respectively. The smaller device gives 685-mW output power with 7.4-dB gain and 64% overall efficien...

A design analysis of the power amplifiers developed for ultrasound applications was conducted because require different types amplifiers, which are one most critical electronic components in systems. To generate acoustic signals using transducers, among important mechanical devices systems, an appropriate output voltage, current, or signal must be produced by a amplifier. Therefore, amplifier t...

The operational amplifier concept emerged from extensive development of electronic analog computers in the 1940s. Operational amplifiers get their name from their ability to perform mathematical operations such as summation, integration and differentiation. With the addition of logarithmic amplifiers and feedback, one may perform multiplication and division as well. These abilities allow op-amp...

Background and Objectives: In this paper, a new design strategy was proposed in order to enhance bandwidth and efficiency of power amplifier. Methods: To realize the introduced design strategy, a power amplifier was designed using TSMC CMOS 0.18um technology for operating in the Ka band, i.e. the frequency range of 26.5-40GHz. To design the power amplifier, first a power divider (PD) with a ver...

For the need of higher capacity and speed, optical fiber communication system is being extensively used all over the world for telecommunication, video and data transmission purposes. Optical communication systems are employed in order to meet the challenge of high bandwidth but signal attenuation is the major limitation. Electronic regeneration of signal is used to overcome the problem but it ...