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Access Type
WSU Access
Date of Award
January 2024
Degree Type
Dissertation
Degree Name
Ph.D.
Department
Electrical and Computer Engineering
First Advisor
Mohammed Ismail
Second Advisor
Mihai Sanduleanu
Abstract
ABSTRACTPOWER AMPLIFIER DESIGNS FOR 5G V2X WIRELESS COMMUNICATIONS AND SDR TRANSMITTER DEVELOPMENT by SAEEDEH MAKHSUCI 2024 Advisor: Dr. Mohammed Ismail Co-advisor: Dr. Mihai Sanduleanu Major: Electrical Engineering Degree: Doctor of Philosophy
This research aims to develop Power Amplifier (PA) for 5G wireless communication. Anticipated demand for improved wireless communication services is expected to drive advancements and expansion in the 5G Network. The growing number of users, a desire for faster data rates, and enhanced connectivity have prompted markets to offer more efficient communication methods at a cost-effective approach. Our research not only focuses on the development of high-efficiency PAs but also explores the integration of inverse class D PA into Software-Defined Radio (SDR) systems. The PA serves as a fundamental element in a transmitter design which is the most power-consume component in the systems. As technology progresses, efficient management and improvement of PA performance become crucial for achieving optimal functionality and overall system efficiency in the transmitter architectures. The fast growth of 5G technology has triggered the demand for power amplifiers with high efficiency, making it easier to transmit large data volumes over long distances while lowering power consumption. Modern wireless systems mostly must support high data rates and bandwidth efficiency modulations that have high peak-to-average power ratios (PAPRs). One solution to this challenge is the Doherty Power Amplifier (DPA), a type of amplifier that allows for higher power efficiency while maintaining high output power levels. We introduced and compared two transformerless Series Doherty Power Amplifier (SDPA) architectures designed for 5.9 GHz frequency in 5G V2X communication using CMOS technology. The SDPAs utilize a balun as a replacement for the transformer and feature reduced area and cost compared to conventional parallel DPAs. Another solution to achieve a highly efficient Power Amplifier is by employing a switching PA. However, when employing a switching PA, it is essential to consider that the optimal modulation for it is one that transfers information through phase rather than amplitude. Hence, our focus involves the Inverse Class-D Power Amplifier and the transmitter of Software Defined Radios (SDR). In the design of switching PAs, a crucial consideration is to minimize the overlap between voltage and current. The core concept behind the Inverse Class-D Power Amplifier involves utilizing a delay to reduce the overlap between current and voltage. This power amplifier is being developed using advanced 22nm Fully Depleted Silicon On Insulator, or FD-SOI technology at a frequency of 28 GHz. Generally, there are two different types PAs, switching PAs and linear PAs. Our Doherty PAs are designed to achieve good gain and efficiency. Finally, SDR transmitter with Digital Outphasing Exponential Modulation is introduced. This transmitter uses an inverse Class D power amplifier (PA) implemented in 22nm FD-SOI technology.
Recommended Citation
Makhsuci, Saeedeh, "Power Amplifier Designs For 5g V2x Wireless Communications And Sdr Transmitter Development" (2024). Wayne State University Dissertations. 4119.
https://digitalcommons.wayne.edu/oa_dissertations/4119
