Browsing Theses by Subject "power amplifier"
Now showing items 1-11 of 11
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Characterization and Linearization of 5G mm-Wave Power Amplifiers Using Reduced-Sampling Observation Receiver
(University of Waterloo, 2017-08-24)In this work, an advanced calibration routine is proposed to determine the frequency response of a feedback receiver over a targeted linearization bandwidth, when only sub-Nyquist (aliased) samples are available. A new ... -
Compensation of Impairments in Millimeter-Wave/Sub-THz Power Amplifier and Frequency Multiplier Based Transmitters
(University of Waterloo, 2024-05-27)The ever-growing demand for increased network capacity and higher data rates has instigated, in recent years, a shift towards harnessing millimeter-wave (MMW) and sub-THz frequency bands, offering abundant and untapped ... -
Current Contour Based Design Methodology for IMN Design of Doherty Power Amplifiers
(University of Waterloo, 2015-09-16)Carrier aggregation (CA) is used in modern communication schemes to increase com- munication bandwidth (BW) and reduce redundant equipment. This combined with the already high peak to average power ratio (PAPR) signals in ... -
Dual-band Power Amplifier for Wireless Communication Base Stations
(University of Waterloo, 2012-08-30)In wireless communication systems, multiple standards have been implemented to meet the past and present demands of different applications. This proliferation of wireless standards, operating over multiple frequency bands, ... -
Efficiency and Linearity Improvement of Sub-6GHz Digital Beam-forming Transmitters
(University of Waterloo, 2021-09-16)The fifth generation (5G) cellular network promises to bring higher data capacity, faster transmission speed, and lower latency. 5G employs massive multiple-input multiple-output (mMIMO) architecture which enables many ... -
Experimental Investigation of the Power Amplifiers’ Nonlinearity using a 3.5 GHz 2×2 RF Front-end Prototype
(University of Waterloo, 2020-01-16)Next generation communication systems will demand extremely high system capacity. Ap-proaches such as complex digital modulation schemes, widening of the instantaneous band-width and massive multi-input multi-output (MIMO) ... -
Extended Bandwidth Doherty Power Amplifier for Carrier Aggregated Signals
(University of Waterloo, 2014-08-21)In the conventional classes of power amplifiers the efficiency drops at power back-off, whereas in order to maximize the spectral efficiency and data rate, wireless communication standards employ signals with high peak to ... -
High Linearity Broadband RF Vector Multiplier for Analog/RF Pre-distortion
(University of Waterloo, 2016-09-23)Wireless communication systems are moving towards a heterogeneous solution, where small-cell base stations such as pico-cells and femto-cells are used concurrently with macro- cell base stations in high data traffic areas. ... -
High-Efficiency Millimeter-Wave Front-Ends for Large Phased-Array Transmitters
(University of Waterloo, 2020-10-26)The ever-increasing demand for wireless broadband connectivity requires infrastructure capable of supporting data transfer rates at multi-Gbps. To accommodate such heavy traffic, the channel capacity for the given spectrum ... -
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 ... -
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 ...