Essays about: "AM modulator"

Found 2 essays containing the words AM modulator.

  1. 1. Linearity Aspects of Dynamic PA Supply-Modulation Systems with Emphasis on Modulator Modeling and non-linearities

    University essay from Avdelningen för elektronik, matematik och naturvetenskap

    Author : Robert Glen Perea Tamayo; [2012]
    Keywords : EER; Envelope tracking; hybrid switching amplifiers; power amplifiers supply modulation;

    Abstract : Modern communication systems operate with high peak-to-average-power ratio (PAPR) over wide bandwidth. Linearity requirements force operation in a low efficient highly linear back-off region. Then increasing efficiency is becoming critical. One of the most promising technologies to accomplish this is using supply modulation, e. READ MORE

  3. 2. DAB Transmission System Simulation

    University essay from Institutionen för systemteknik

    Author : Héctor Uhalte Bilbao; [2004]
    Keywords : Electronics; DAB; Terrestrial digital broadcasting; OFDM; COFDM; IFFT; FFT; SFN; SimulinkTM< sup>; Differential modulator.; Elektronik;

    Abstract : DAB (Digital Audio Broadcasting) is the radio digital system developed as an european standard by the ETSI, EN 300 400, based on the Eureka-147 group works, to improve the performance of the analogue radio systems (AM and FM). The system is based on the OFDM technology which allows DAB to exploit the spectrum frequencies in a better way with a higher quality of sound for mobile receivers specially. READ MORE