Optical homodyne detection is used in numerous quantum and classical applications that demand high levels of sensitivity. However, performance typically limited due to the use bulk optics discrete receiver electronics. To address these issues, this work we present a co-integrated balanced detector consisting silicon photonics optical front end custom integrated transimpedance amplifier designed...

A novel algorithm for class-A/AB power amplifiers (PA) enhancement is fully described. The principle is to find a combination of base current (gate voltage), collector voltage (drain voltage) and input power for each output power level so that the linearity/efficiency specifications of the application are satisfied. Based on a 1tone static characterization of the amplifier, the algorithm uses a...

150104-8686-IJECS-IJENS © August 2015 IJENS I J E N S  Abstract— In this paper, a dual-band, multi-standard, concurrent, low noise amplifier operating in the 2.45/5.25 GHz bands is presented. The amplifier design is based on an ultra low noise PHEMT transistor connected in the common source configuration with inductive degeneration. The proposed amplifier stability is ensured using a series ga...

Introduction This tutorial is intended to guide the user through the stages of a basic low noise amplifier design and optimization, with a goal of first-pass fabricated design success. This will be accomplished by providing the user with a project tutorial, starting with the design process and ending with a comparison between the software simulations and the model performances. This example use...

This paper reviews recent work in the area of active metamaterials where transistors and circuitry are embedded within metamaterial structures for novel functions. In one function, embedding of psuedomorphic high electron mobility transistor (pHEMT) within the metamaterial resonator allows realization of a terahertz modulator. A variation of this approach utilizes diodes to modulate the metamat...

This article applies a systematic approach based on the normalized determinant function (NDF) theory to analyse stability in multi-loop circuits and design required stabilization network. Presenting several provisions, return ratios are extracted by employing immittance or hybrid matrices (Z, Y, G H) of active two ports. Using these matrices, instead S-parameters, facilitates selection an appro...