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العنوان
Power Amplifiers for Wireless Communication /
المؤلف
Ali, Mohamed Osama Ramadan.
هيئة الاعداد
باحث / محمد أسامة رمضان علي سليم
مشرف / هاني فكري رجائي
مناقش / أحمد نادر محيى الدين
مناقش / محمد أمين إبراهيم دسوقى
تاريخ النشر
2023.
عدد الصفحات
152 P. :
اللغة
الإنجليزية
الدرجة
ماجستير
التخصص
الهندسة الكهربائية والالكترونية
تاريخ الإجازة
1/1/2023
مكان الإجازة
جامعة عين شمس - كلية الهندسة - قسم هندسة الالكترونيات والاتصالات الكهربية
الفهرس
Only 14 pages are availabe for public view

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Abstract

The thesis studies different millimeter wave (mmWave) power amplifier (PA) designs that provide high efficiency for wireless communication applications. The proposed design based on the Doherty architecture is introduced and its results are presented. The thesis contains five chapters, their organization is as follows:
Chapter 1: Introduces wireless communication with a brief discussion why the digital communication prevailed, and explains benefits of mmWave wireless communication as it serves the demanded high data rate communication.
Discussion of impairments faced by mmWave communication and its implications for the PA design is given.
Chapter 2: Serves as an introduction for the design of radio frequency (RF) amplifiers, starting with linear small-signal amplifiers with the definition of its different specification. A Discussion of PA design and its main differences to the linear small-signal RF amplifiers is given, followed by its different measures and performance metrics. Different power amplifier classes are discussed, emphasizing the linearity efficiency trade-off.
Chapter 3: Discusses four power amplifier architectures that aim to improve the efficiency at the peak and at the power back-off (PBO), the architectures are the Doherty, Outphasing, Envelope Elimination and Restoration and finally the Envelope Tracking, for each architecture an introduction is given followed by a literature survey for the state of the art designs.
Chapter 4: Presents the proposed mmWave Doherty architecture that aims to improve the efficiency with generating high output power, design equations are derived from the simplified models, then incorporating practical models is carried out. The schematic and the layout for the amplifier are illustrated with the design parameters values, the simulation results are then presented and compared with the recently published Doherty mmWave power amplifiers.
Chapter 5: Provides the thesis with a conclusion followed by directions for future work that improves and extends the current design.
Keywords: Power amplifier (PA), Doherty, high efficiency, silicon, inverse class-F, transformers, voltage combining.