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Bi, J. (author)New generations wireless communication systems require linear efficient RF power amplifiers for higher data transmission rates. However, conventional RF power amplifiers are normally designed for peak efficiency under maximum output power condition. Consequently, when the power is backed-off from its maximum point, the amplifier efficiency drops...master thesis 2008
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Kearey, R.F. (author)This thesis describes the design, simulation and implementation of a supply modulator to be used in a VHF power amplifier on the Delfi-n3Xt nano-satellite. First, a set of specifications is defined that describe the required functionality. These are derived from earlier work on related systems and confirmed through discussions within the project...master thesis 2010
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Zhang, R. (author)This research work aims to gain understanding of the power amplifier (PA) operating as a linear PA under low power drive conditions and as a switch-mode PA in high power drive conditions both with the same Class-E load. Two approaches were taken here. Firstly, an analytical approach was developed to investigate the switching operation of...master thesis 2010
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Shi, K. (author)With the rapid growth of wireless communication systems, there is more and more demand for radio frequency power amplifiers (RFPAs) in base stations to be power-efficient so as to reduce the cooling and electrical power cost. Besides the efficient requirement, wide-band working frequency and compact PCB size are also attractive for cutting more...master thesis 2010
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Wang, Y. (author)Vanwege vertrouwelijke informatie of andere redenen is slechts een deel van de publicatie opgenomen in de repository. Due to confidential information or other reasons only a part of the publication is presented in the repository. Wideband Class-B power amplifier is required in Modern communication systems. The bandwidth limitation of Class-B...master thesis 2010
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Deng, X. (author)Vanwege vertrouwelijke informatie of andere redenen is slechts een deel van de publicatie opgenomen in de repository. Due to confidential information or other reasons only a part of the publication is presented in the repository. Doherty Power Amplifier (DPA) is employed to improve the efficiency when operated with complex modulated signals. Due...master thesis 2010
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Li, J. (author)This thesis aims for high power wideband amplifiers suitable for base station instrumentation purposes. A power combing topology is introduced, not only to achieve high power but also good input and output matching. Two kinds of broadband 3-dB quadrature couplers, which are important components in the power combing topology, are designed and...master thesis 2011
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Todi, R. (author)Wireless communication has encountered a tremendous growth over the past few decades. The increased plurality in communication standards, characterized by the use of different operating frequencies and data rates, has translated into very tough specifications for the broadcasting base station power amplifier, in terms of efficiency, bandwidth...master thesis 2011
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He, J. (author)Currently the Doherty Power Amplifier (DPA) is replacing the traditional Class B amplifier in base-station and broadcast applications, as such becoming the preferred choice of industry due to its simplicity and high efficiency performance. In spite of its success, so far practical DPA implementations can provide only a very limited RF bandwidth,...master thesis 2013
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Venter, R.G. (author)Semiconductor power devices have a growing popularity in industrial, scientific and medical (ISM) band applications, such as microwave-heating, drying and plasma generation. A distinguishable property of these applications is the relentless pursuit of reliability, ruggedness, or the ability to withstand a mismatched loading condition without...master thesis 2014
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Venter, R.G. (author)Semiconductor power devices have a growing popularity in industrial, scientific and medical (ISM) band applications, such as microwave-heating, drying and plasma generation. A distinguishable property of these applications is the relentless pursuit of reliability, ruggedness, or the ability to withstand a mismatched loading condition without...master thesis 2014
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- D'Avino, M. (author) master thesis 2016
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Feng, Jun (author), Louwerse, Alexander (author)The objective of the bachelor graduation project detailed in this thesis is the development of a system suited for testing radio frequency (RF) power amplifiers (PAs). This PA test system is in particular set up for testing two-transistor interpolating-supply amplifiers.<br/>Interpolating-supply PAs are efficiency-enhanced by employing multiple...bachelor thesis 2017
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Buijs, L. (author), Hoogelander, M. (author)In this work, a switched-device power amplier using bias control is designed and realized. The PA operates at a frequency of 100MHz. Test results show that the PA achieves a PAE of 63% at −6dB power back-off and 60% at the peak output power of 40dBm. First, an overview of the state-of-the-art PA technology and performance in high PAPR...bachelor thesis 2017
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Bouazzata, Bilal (author), van der Kolk, Niels (author)In this thesis, a new RF Power Amplifier design is proposed that targets for improving the efficiency profile of classical RF Amplifiers. This RF Power Amplifier is especially designed for modulation schemes that need a PA with high PAPR. The PA consists of two different stages that will be digitally controlled. One of these stages has an...bachelor thesis 2017
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Ramesh, Anand (author)Automotive RADARs have gained popularity recently as a means to sense obstacles and avoid collisions, thus preventing loss of life related to vehicular incidence. Research in object detection is increasingly tending towards the 77GHz automotive RADAR band, owing to the availability of larger bandwidths, resulting in high range resolution....master thesis 2017
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Giri, Amitava (author)In 5G transmitters, high efficiency, high linearity, and compatibility with MIMO and beamforming techniques are of utmost importance. Typically, enhancement techniques like supply modulation or load modulation are used when dealing with envelope modulated communication signals, which increasingly have high peak-to-average-power ratios (PAPR)....master thesis 2018
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Newadj, Kiren (author)Clean drinking water is still not widely available around the globe and therefore remains an unsolved issue. In fact, 1 in 9 people lack daily access to safe water and sanitation. Groundwater is a water supply source that needs minor treatment and thereby presents itself as a good solution to this global issue. Especially in development...master thesis 2019
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van Baarle, Ruben (author), Ramlal, Darshan (author)This thesis explains the design process of two subsystems of a radio transmitter and receiver. The goal of the project is to transmit audio over a distance using FM modulation. This report will focus on the power amplifier leading to the transmitting antenna and the low noise amplifier connected to the receiving antenna. A design process for a...bachelor thesis 2019
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Bruinsma, Quinten (author)The ever increasing demand for faster data rates combined with the need for higher levels of integration, while keeping the production and operation cost to a minimum leads to the requirement of an efficient high bandwidth digital transmitter architecture. With the shortcomings of both polar and cartesian architectures, a new architecture is...master thesis 2020
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