Raman amplifier design using geometry compensation technique

Fast-Settling Amplifier Design Using Feedforward Compensation Technique

A new feedforward compensation amplifier architecture that provides very fast settling performance is introduced. The additional feedforward path introduces zeros in the open-loop transfer function which can be used to shape the overall frequency response. It is shown that a second-order bandpass feedforward path is useful for extending the unitygain-frequency of the overall amplifier. By choos...

Ultra-Widband Distributed Amplifier Using Loss Compensation Technique on Both Input and Output Circuit

In this paper, we analyze a distributed amplifier based on input/output attenuation compensation. The analysis is carried out for a HEMT transistor; and a constant-k section filter is used to calculate the amplifier’s characteristics such as attenuation factor, phase constant and gain. The proposed design approach enables us to examine the tradeoff among the variables, which include the type an...

Adaptive-Optics Compensation through a High-Gain Raman Amplifier

The applicability ofRaman amplification to the problem ofhigh-power laser propagation through a turbulent atmosphere was investigated in a two-part experimental program. The goal of the program wasto determine the extent ofphasefront preservation possible in a high-gain Raman amplifier. The utility ofan unconventional approach to adaptiveoptics compensation, known as "Raman look-through," was e...

Wideband CMOS Transimpedance Amplifier Design Using Transformer-Peaking Technique

GHz WLAN InGaP / GaAs Power Amplifier with Temperature Compensation Technique

© 2009 Sang-Woong Yoon et al. 601 ABSTRACT⎯This letter presents a high performance 2.4 GHz two-stage power amplifier (PA) operating in the temperature range from -30C to +85C for IEEE 802.11g, wireless local area network application. It is implemented in InGaP/GaAs hetero-junction bipolar transistor technology and has a bias circuit employing a temperature compensation technique for error vecto...