Design of LNTA for Multi-Band WCDMA

Currently, a low cost, single-chip multi-band WCDMA/GSM transceiver is needed for the 3G segment of the cellular communication that provides backward compatibility with the 2G GSM network. In this thesis, a novel, multi-band, low noise transconductance amplifier (LNTA) is presented. The LNTA has three stages, which are the transconductance,...

Digital Cartesian feedback linearization of power amplifiers

The efficient use of the power budget in mobiles and small satellite applications is of primary importance because of the reduced size of the power sources. The limited power supply has to be spent wisely. In a transmitter, the power amplifier is the main consumer of that budget, which is why it has to be as efficient as possible. Unfortunately,...

Jacket for people with balancing problems

This report concerns the development of a jacket for people with balance problems. Patients with failing balance organs can have serious difficulty to maintain their balance. The balance jacket contains a sensor and a belt of actuators. The sensor determines the orientation of the patient and provised feedback to the jacket. The jacket contains...

A new perspective on continental moisture recycling

The importance of moisture feedback between continental precipitation and evaporation, referred to as moisture recycling, is still under debate. Most of the research in the past focused on the contribution of recycling to precipitation within a certain region only. This paper clearly distinguishes between different definitions of moisture...