Please use this identifier to cite or link to this item:
|Title:||High speed microwave transmission system for a low earth orbit micro-satellite platform||Authors:||Yeap, Yean Wei||Keywords:||DRNTU::Engineering::Electrical and electronic engineering::Satellite telecommunication||Issue Date:||2007||Source:||Yeap, Y. W. (2007). High speed microwave transmission system for a low earth orbit micro-satellite platform. Master’s thesis, Nanyang Technological University, Singapore.||Abstract:||In the thesis, the architectures of direct up-conversion and double up-conversion transmitter were discussed and a direct up-conversion module operating at 8.3GHz was developed. The practical design considerations of a high power amplifier such as the DC bias network, devices and PCBs heat dissipation and groundings, etc., are highlighted. To couple forward output power, instead of using a conventional coupler that has higher insertion loss and bigger physical dimension, a novel and simple X-band power divider was designed. Three high power (>8W) and high gain (>33dB) cascade power amplifier Engineering Models (EM) operating at 8.3GHz were designed and developed. Without significant redesign effort, a few methods on how to overcome cavity resonance of cascade amplifiers module were also presented. Besides, a novel approach on how to design S-band high power amplifier based on small signal S-parameters analysis and passive load pull were demonstrated. In addition, a novel technique was shown on how to design a linear power amplifier without performing sophisticated PA linearization.||URI:||https://hdl.handle.net/10356/3867||DOI:||10.32657/10356/3867||Rights:||Nanyang Technological University||Fulltext Permission:||open||Fulltext Availability:||With Fulltext|
|Appears in Collections:||EEE Theses|
Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.