Highly Efficient and Linear Reconfigurable Mm-Wave CMOS Power Amplifiers for 5g Mobile Communications - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Highly Efficient and Linear Reconfigurable Mm-Wave CMOS Power Amplifiers for 5g Mobile Communications write by Sheikh Nijam Ali. This book was released on 2018. Highly Efficient and Linear Reconfigurable Mm-Wave CMOS Power Amplifiers for 5g Mobile Communications available in PDF, EPUB and Kindle. With the race to next-generation millimeter-wave (mm-wave) fifth-generation (5G) wireless technology, implementation of highly power-efficient transceivers has become an important research topic. Particularly, the design of high-efficiency and frequency-reconfigurable power amplifier (PA) in complementary-metal-oxide-semiconductor (CMOS) technology is of paramount importance as it enables longer battery life and improved thermal management at a low cost in smart portable-devices while supporting multi-standard 5G communications such as 28GHz, 37-40GHz etc. Simultaneously, a PA with large-bandwidth and high-linearity is highly desirable for 5G mobile communications as it can cover multiple wideband-channels with high-order complex-modulation schemes (i.e., 64/512-quadrature-amplitude-modulation (QAM)) while ensuring robust performances against process-voltage-temperature variations. So far, traditional PA architectures have failed to address these critical design challenges and performance goals. This dissertation presents three new architectures for the design of highly-efficient, highly-linear, wideband and frequency-reconfigurable CMOS PAs for mm-wave 5G cellular communications with 15-16dBm of output-power. First, a 40% power-added-efficiency (PAE) frequency-reconfigurable PA with a tunable gate-drain neutralization at 24GHz and 28GHz is investigated in 65nm CMOS. This is the very first demonstration of a frequency-reconfigurable CMOS PA at mm-wave frequencies using tunable-inductor and tunable-transformer. Second, a 25-35GHz neutralized Continuous Class-F (CCF) CMOS PA achieving 26% modulation-PAE at 1.5Gbps and 46.4% peak-PAE is developed. This design is the very first demonstration of a CCF PA at mm-wave, and the reported measured 46.4% PAE is the highest PAE among mm-wave CMOS PAs to-date. Finally, a 28GHz 41%-PAE linear CMOS PA architecture using a transformer-based amplitude-to-phase (AM-PM) pre-distortion correction technique for 5G is investigated and developed. The proposed linearizer adopts a transformer-based self-compensated pre-distortion network to correct a detrimental AM-PM distortion due to non-linear gate-source capacitance (Cgs) in CMOS PAs. This linearization method mitigates the large-gain reduction problem in traditionally used capacitor-based linearization approaches while consuming no extra-power or introducing additional circuity. Subsequently, significant improvement in modulated-PAE and linearity is achieved. These three PA architectures provide distinct merits of advancing the knowledge of high-linearity, high-efficiency, wideband and frequency-reconfigurable fully-integrated CMOS PA design at mm-wave for next-generation multi-Gbps 5G communications by presenting original circuit topologies, fully supported by analytical-equations, chip-fabrication and comprehensive large-signal measurement results.
RF and mm-Wave Power Generation in Silicon
RF and mm-Wave Power Generation in Silicon - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook RF and mm-Wave Power Generation in Silicon write by Hua Wang. This book was released on 2015-12-10. RF and mm-Wave Power Generation in Silicon available in PDF, EPUB and Kindle. RF and mm-Wave Power Generation in Silicon presents the challenges and solutions of designing power amplifiers at RF and mm-Wave frequencies in a silicon-based process technology. It covers practical power amplifier design methodologies, energy- and spectrum-efficient power amplifier design examples in the RF frequency for cellular and wireless connectivity applications, and power amplifier and power generation designs for enabling new communication and sensing applications in the mm-Wave and THz frequencies. With this book you will learn: Power amplifier design fundamentals and methodologies Latest advances in silicon-based RF power amplifier architectures and designs and their integration in wireless communication systems State-of-the-art mm-Wave/THz power amplifier and power generation circuits and systems in silicon Extensive coverage from fundamentals to advanced design topics, focusing on various layers of abstraction: from device modeling and circuit design strategy to advanced digital and mixed-signal architectures for highly efficient and linear power amplifiers New architectures for power amplifiers in the cellar and wireless connectivity covering detailed design methodologies and state-of-the-art performances Detailed design techniques, trade-off analysis and design examples for efficiency enhancement at power back-off and linear amplification for spectrally-efficient non-constant envelope modulations Extensive coverage of mm-Wave power-generation techniques from the early days of the 60 GHz research to current state-of the-art reconfigurable, digital mm-Wave PA architectures Detailed analysis of power generation challenges in the higher mm-Wave and THz frequencies and novel technical solutions for a wide range for potential applications, including ultrafast wireless communication to sensing, imaging and spectroscopy Contributions from the world-class experts from both academia and industry
High Efficiency and High Linearity Power Amplifiers for 5G Wireless Communications
High Efficiency and High Linearity Power Amplifiers for 5G Wireless Communications - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook High Efficiency and High Linearity Power Amplifiers for 5G Wireless Communications write by Duy Phuong Nguyen. This book was released on 2017. High Efficiency and High Linearity Power Amplifiers for 5G Wireless Communications available in PDF, EPUB and Kindle. With the increasing demand for higher data rates and the crowding of the cellular bands below 3 GHz, researchers are looking to the millimeter-wave frequency spectrum to define the next generation of mobile broadband communications. One of the biggest challenges in implementing a millimeter-wave solution is the low efficiency of commercially available millimeter-wave power amplifiers. Furthermore, the monolithic millimeter-wave integrated circuit (MMIC) power amplifiers also need to have high power with reasonable gain, good linearity and maintain a compact chip size. In Chapter 1 and Chapter 2 of this dissertation, a compact high efficiency Ka-band power amplifier and a highly linear amplifier using second harmonic injection will be demonstrated. The requirements are even more stringent when the amplifiers are deployed in wireless systems that have high peak to average power ratio (PAPR). Among the most popular solutions to achieve high efficiency at power back-off is the Doherty architecture. Thus far, Doherty power amplifiers have been primarily implemented in the spectrum below 3 GHz for cellular base stations. Very few millimeter-wave Doherty PA’s have been reported to date. The conventional Doherty architecture has several inherent drawbacks that cause low efficiency, occupy large chip size and limit the performance bandwidth. Therefore, in our work, we propose four different Doherty amplifier topologies improve the DPA performance: 1) An ultra-compact Doherty amplifier using 3-dimensional broadside coupler 2) A wideband reconfigurable Doherty amplifier 3) A high power density stacked-FET Doherty power amplifier with asymmetrical gate bias 4) A high efficiency asymmetrical Doherty power amplifier using novel load modulation scheme based on load-pull data. All the proposed DPAs are fabricated in a 0.15-[mu]m enhancement mode (E-mode) Gallium Arsenide (GaAs) process. The proposed techniques and experimental results will be discussed in Chapter 3, 4, 5 and 6.The content of this dissertation is a compilation of 18 manuscripts, all of which I am the author or co-author. The titles, publishers and publication dates of the manuscripts are listed on page xii and xiii in this dissertation.
5G and E-Band Communication Circuits in Deep-Scaled CMOS
5G and E-Band Communication Circuits in Deep-Scaled CMOS - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook 5G and E-Band Communication Circuits in Deep-Scaled CMOS write by Marco Vigilante. This book was released on 2018-02-07. 5G and E-Band Communication Circuits in Deep-Scaled CMOS available in PDF, EPUB and Kindle. This book discusses design techniques, layout details and measurements of several key analog building blocks that currently limit the performance of 5G and E-Band transceivers implemented in deep-scaled CMOS. The authors present recent developments in low-noise quadrature VCOs and tunable inductor-less frequency dividers. Moreover, the design of low-loss broadband transformer-based filters that realize inter-stage matching, power division/combining and impedance transformation is discussed in great detail. The design and measurements of a low-noise amplifier, a downconverter and a highly-linear power amplifier that leverage the proposed techniques are shown. All the prototypes were realized in advanced nanometer scaled CMOS technologies without RF thick to metal option.
Millimeter-Wave Power Amplifiers
Millimeter-Wave Power Amplifiers - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Millimeter-Wave Power Amplifiers write by Jaco du Preez. This book was released on 2017-10-05. Millimeter-Wave Power Amplifiers available in PDF, EPUB and Kindle. This book provides a detailed review of millimeter-wave power amplifiers, discussing design issues and performance limitations commonly encountered in light of the latest research. Power amplifiers, which are able to provide high levels of output power and linearity while being easily integrated with surrounding circuitry, are a crucial component in wireless microwave systems. The book is divided into three parts, the first of which introduces readers to mm-wave wireless systems and power amplifiers. In turn, the second focuses on design principles and EDA concepts, while the third discusses future trends in power amplifier research. The book provides essential information on mm-wave power amplifier theory, as well as the implementation options and technologies involved in their effective design, equipping researchers, circuit designers and practicing engineers to design, model, analyze, test and implement high-performance, spectrally clean and energy-efficient mm-wave systems.
