Mann, David William: 90nm CMOS Driver Amplifier for WCDMA Mobile Applications (Under the direction of Dr. Kevin Gard.) Integration is driving today’s cellular phone industry to create single chip cellphone systems. With the integration of Radio Frequency Transmitters into CMOS technology, robust circuits are needed that can scale with new technologies. This thesis explores the challenges of des...

This paper presents a 30dBm (1W) class-E power amplifier projected in a standard 0.18-μm CMOS technology. The power amplifier (PA) consists in two differentials stages. The main stage employs a cascode class-E RF power amplifier with a self-biasing circuit. The driver stage uses the technique of Injection-Locking to substantially reduce the input power signal, maintaining a high gain. At 2.45 G...

Abstract The backward Raman amplifier (RA) can considered as one of the best solutions for optical communication, especially in Wavelength Division Multiplexing technology. They reduce nonlinear effects, have low noise figure and a wide frequency range. work this paper aims to attenuation signal due its propagation fiber increase both gain output power. Two models are proposed. Proposal model c...

Ultrafast optical science is a rapidly evolving multidisciplinary field: the ability to excite matter with femtosecond light pulses and probe its subsequent evolution on ultrashort time scales opens up completely new fields of research in physics, chemistry, and biology.[1] Furthermore, the high intensities that can be generated using femtosecond light pulses allow us to explore new regimes of ...

This paper presents the analysis of the Darlington pair as an element in a distributed amplifier (DA) configuration. The Darlington pair circuit with the input and output inductor of the DA transmission line are included in the analysis of the circuit, this is also simulated. The inherent problem of poor performance is reduced by the inductors. The overall result shows that high power gain at h...

Large pose variations remain to be a challenge that confronts real-word face detection. We propose a new cascaded Convolutional Neural Network, dubbed the name Supervised Transformer Network, to address this challenge. The first stage is a multi-task Region Proposal Network (RPN), which simultaneously predicts candidate face regions along with associated facial landmarks. The candidate regions ...

Abstract — This paper presents the design, implementation and test of inductorless low noise amplifiers implemented on a BiCMOS SiGe technology. A study of LNAs with the available spiral inductors has showed that similar gain and noise figure can be obtained with smaller resistive feedback amplifiers due to the inductors low Q at 30GHz. A wide band amplifier with a 3dB bandwidth from 12 to 30GH...

The main wideband amplifier candidates for use in submarine systems are hybrid DRA/EDFA and C+L band EDFAs. We explore the relative merits of the two technologies and demonstrate through simulations that the hybrid approach is advantageous for most systems. Introduction Submarine systems have enjoyed the tremendous advances in coherent transmission brought about by high speed DSP technology ove...