Browsing Theses by Supervisor "Boumaiza, Slim"
Now showing items 21-34 of 34
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Linearizing Radio Frequency Power Amplifiers Using an Analog Predistortion Technique
(University of Waterloo, 2015-12-21)As critical elements of the physical infrastructure that enables ubiquitous wireless connectivity, radio frequency power amplifiers (RFPAs) are constantly pushed to the limits of linear but efficient operation. Digital ... -
Millimeter-wave 39 GHz 4x4 Phased Antenna Array with Embedded Near-field Probing Antenna for Performance Enhancement
(University of Waterloo, 2023-04-19)Beamforming arrays are a vital technology for millimeter-wave (mm-wave) wireless communication systems. A large amount of research and an increasing number of phased array prototypes have been developed which provide high ... -
Millimetre Wave Series Connected Doherty PA Using 45nm SOI Process
(University of Waterloo, 2018-05-10)With the high demand for high data rate communication systems, it is expected that wireless networks will migrate into the unexploited millimeter-wave frequencies. This migration and the utilization of wide-band digitally ... -
Modular Nonlinear Characterization System and Large-Signal Behavioral Modelling of Unmatched Transistors for Streamlined Power Amplifier Design
(University of Waterloo, 2016-01-21)This thesis provides a comprehensive approach to the characterization and modelling of large-signal nonlinear RF/microwave devices, circuits and systems. This research is moti- vated by the increased linearity and ... -
Near-field Probing Array for Enhancing 5G mm-wave Beamforming Transmitter Performance
(University of Waterloo, 2021-09-10)As sub-6 GHz fifth-generation (5G) communication networks begin to deploy commercially, the industry is seeing a paradigm shift towards the millimeter wave (mm-wave) bands as they provide multi-gigahertz of frequency ... -
A Novel Power-Scalable Wideband Power Amplifier Linearization Technique
(University of Waterloo, 2019-08-29)Global mobile traffic is expected to continue to increase at an astonishing rate in the future, due to the ever-increasing number of mobile phone subscribers and the adoption of smart devices which generate significantly ... -
Novel Predistortion System for 4G/5G Small-Cell and Wideband Transmitters
(University of Waterloo, 2020-12-15)To meet the growing demand for mobile data, various technologies are being introduced to wireless networks to increase system capacity. On one hand, large number of small-cell base stations are adopted to serve the reduced ... -
On Nonlinear Time-Invariant Behavioural Models of Power Transistors Used in the Computer-Aided Design of Power Amplifiers
(University of Waterloo, 2023-06-01)The Radio Frequency (RF) Power Amplifier (PA) is the main consumer of power in a wireless transmitter. Energy efficient PA design aided with circuit simulation tools requires accurate nonlinear models of the power transistors ... -
Physics Based Virtual Source Compact Model of Gallium-Nitride High Electron Mobility Transistors
(University of Waterloo, 2017-04-19)Gallium Nitride (GaN) based high electron mobility transistors (HEMTs) outperform Gallium Arsenide (GaAs) and silicon based transistors for radio frequency (RF) applications in terms of output power and efficiency due to ... -
Push-Pull Based High Efficiency and High Power Broadband Power Amplifiers for Wireless Base Stations
(University of Waterloo, 2019-03-11)The monthly data throughput by 2021 is forecasted to be ten times that of December 2015. As a result of the on going dramatic increase in demand, service providers are assigned new frequency bands to accommodate more ... -
Real-Time FPGA-Based Testbed for Evaluating Digital Predistortion in Fully Digital MIMO Transmitters
(University of Waterloo, 2023-04-27)As one of the key enabling technologies of 5G networks, massive multiple-input, multiple-output (MIMO) transmitters use many transmit chains to ensure a very high data rate and acceptable signal quality. Realizing Massive ... -
Semiconductor Device Characterization and Modelling for Effective Design of 5G Front-Ends
(University of Waterloo, 2018-11-27)The realization of fifth-generation mobile communication will require transceiver front-ends that can handle data-rates of multi-gigabits per second. To provide such data-rates, bandwidth in the hundreds of megahertz will ... -
Single Input Single Output Digital Pre-Distortion at Millimeter Wave Frequencies for Phased Arrays
(University of Waterloo, 2019-08-30)The limiting fact that is impeding the increase in data rate in the current generation of wireless communication is the limited available spectrum in the sub-6 GHz bands. This has motivated the shift to higher frequencies ... -
Two Port Network Theory Based Design Method of Broadband Doherty Power Amplifier
(University of Waterloo, 2018-09-21)LTE-Advanced (LTE-A) is a widely used communication standard and it mainly features Carrier aggregation (CA). CA increases the user data rate and efficiently exploits the fragmented spectrum by combining various carrier ...