Download or read book Exploratory Development of SiC Bipolar Transistors and GaN Heterojunction Bipolar Transistors for High Power Switching Applications written by and published by . This book was released on 2003 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: Homojunction bipolar transistors (BJTs) have been designed, fabricated, and characterized in 4H-SiC Devices optimized for high current gain have betas as high as 55, a new record for SiC BJTs. Devices optimized for blocking voltage exhibit blocking voltages of 3,200 V, again a new record for SiC BJTs. For the high-gain devices, the critical parameter is the base doping, which must be high enough to prevent punchthrough, while low enough to achieve a high emitter injection efficiency. The optimum value in these devices is a doping of about 1xl0(17) cm(3) at a base thickness of 1 micron. Another critical parameter is the lateral spacing between the edge of the emitter and the implanted P+ region used to form the base contact.

Download or read book SiGe Heterojunction Bipolar Transistors written by Peter Ashburn and published by John Wiley & Sons. This book was released on 2004-02-06 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt: SiGe HBTs is a hot topic within the microelectronics community because of its applications potential within integrated circuits operating at radio frequencies. Applications range from high speed optical networking to wireless communication devices. The addition of germanium to silicon technologies to form silicon germanium (SiGe) devices has created a revolution in the semiconductor industry. These transistors form the enabling devices in a wide range of products for wireless and wired communications. This book features: SiGe products include chip sets for wireless cellular handsets as well as WLAN and high-speed wired network applications Describes the physics and technology of SiGe HBTs, with coverage of Si and Ge bipolar transistors Written with the practising engineer in mind, this book explains the operating principles and applications of bipolar transistor technology. Essential reading for practising microelectronics engineers and researchers. Also, optical communications engineers and communication technology engineers. An ideal reference tool for masters level students in microelectronics and electronics engineering.

Download or read book Current Trends In Heterojunction Bipolar Transistors written by M F Chang and published by World Scientific. This book was released on 1996-01-29 with total page 437 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent advances in communication, digital signal processing and computational systems demand very high performance electronic circuits. Heterojunction Bipolar Transistors (HBTs) have the potential of providing a more efficient solution to many key system requirements through intrinsic device advantages. This book reviews the present status of GaAs, InP and silicon-based HBT technologies and their applications to digital, analog, microwave and mixed-signal circuits and systems. It represents the first major effort to cover the complete scope of the HBT technology development in the past decade, starting from the fundamental device physics, material growth, device reliability, scaling, processing, modeling to advanced HBT integrated circuit design for various system applications.

Download or read book Heterojunction Bipolar Transistors for Circuit Design written by Jianjun Gao and published by John Wiley & Sons. This book was released on 2015-04-27 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt: A highly comprehensive summary on circuit related modeling techniques and parameter extraction methods for heterojunction bipolar transistors Heterojunction Bipolar Transistor (HBT) is one of the most important devices for microwave applications. The book details the accurate device modeling for HBTs and high level IC design using HBTs Provides a valuable reference to basic modeling issues and specific semiconductor device models encountered in circuit simulators, with a thorough reference list at the end of each chapter for onward learning Offers an overview on modeling techniques and parameter extraction methods for heterojunction bipolar transistors focusing on circuit simulation and design Presents electrical/RF engineering-related theory and tools and include equivalent circuits and their matrix descriptions, noise, small and large signal analysis methods

Download or read book Handbook of III V Heterojunction Bipolar Transistors written by William Liu and published by Wiley-Interscience. This book was released on 1998-04-27 with total page 1312 pages. Available in PDF, EPUB and Kindle. Book excerpt: The definitive hands-on guide to heterojunction bipolar transistors In recent years, heterojunction bipolar transistor (HBT) technology has become an intensely researched area in universities and industry worldwide. Boasting superior performance over silicon bipolar transistors with its combined high speed, high linearity, and high power requirements, the III-V HBT is fast becoming a major player in wireless communication, power amplifiers, mixers, and frequency synthesizers. Handbook of III-V Heterojunction Bipolar Transistors presents a comprehensive, systematic reference for this cutting-edge technology. In one self-contained volume, it covers virtually every HBT topic imaginable—introductory and advanced, theoretical and practical—from device physics, to design issues, to HBT performance in digital and analog circuits. It features: A user-friendly, integrated approach to HBTs and circuit design that can be applied in diverse disciplines A discussion of factors determining transistor operation, including thermal properties, failure mechanisms, high-frequency measurements and models, switching characteristics, noise and distortion, and modern device fabrications Over 800 illustrations, showing how to use concepts and equations in the real world An introduction to device physics and semiconductor basics Many worked-out examples and end-of-chapter problem sets Fully developed mathematical derivations Handbook of III-V Heterojunction Bipolar Transistors is an important reference for practicing engineers and researchers in cellular wireless communication and microwave-millimeter electronics as well as for wireless circuit design engineers. It is also extremely useful for advanced undergraduate and graduate students studying advanced semiconductor and microwave circuits.

Download or read book Growth and Fabrication of GaN Based Heterojunction Bipolar Transistors written by April Brown and published by . This book was released on 1999 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: GaN HBTs are promising for microwave power applications but face numerous technology barriers. In this project, we are addressing the enhancement of the hole concentration in p-type GaN by piezoelectric effects and/or the use of superlattices. We are currently assessing the activity of Mg-doped GaN on sapphire and lithium gallate as grown by MBE. In addition, we are modeling these effects to optimize the hole concentration in realistic HBT structures.

Download or read book Development of SiGe based Power Heterojunction Bipolar Transistors and Their Application to Microwave Power Amplification written by Zhenqiang Ma and published by . This book was released on 2001 with total page 310 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Design and Realization of Bipolar Transistors written by Peter Ashburn and published by . This book was released on 1988-08-18 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt: Addresses new developments in the design and fabrication of bipolar transistors for high-speed digital circuits. Covers advances in silicon technology (such as polysilicon emitters and self-aligned fabrication techniques), gallium arsenide technology (such as extremely high-performance MSI circuits resulting from the development of GaAs/GaAlAs heterojunctions), and new applications of bipolar transistors (such as optoelectronic circuits). Also deals with optimization of bipolar devices and processes for high-speed, digital circuits by means of a quasi-analytical expression for the gate delay of an ECL logic gate. Includes case studies.

Download or read book Demonstration and Modeling of a Nitride based Heterojunction Bipolar Transistor Using Nanomembrane Transfer written by Clincy Cheung and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Heterojunction bipolar transistors (HBT) are sought as a building block for implementation of modern broadband electronics, defense applications, and other mm-wave electronic systems demanding in high-speed and high-power performance. The push for greater frequency performance, higher power densities and reliability have pushed research towards wide-bandgap materials such as Gallium Nitride (GaN) given its superior intrinsic material properties, providing for higher breakdown voltage, and enabling higher power performance. However, GaN faces a fundamental limitation with p-type doping, limiting its adoption in RF power electronics. Attempts at a wide bandgap HBT to-date has exclusively relied on epitaxial growth using metal-organic chemical vapor deposition or molecular beam epitaxy (MBE) to fabricate a GaN-based transistor; however, none have yielded a device with both sufficient current gain and transition frequency - both key measures of performance in a bipolar transistor. Alternative materials for the different HBT layers have been considered but are limited by significant lattice mismatch. To bypass p-type GaN limitations and improve the base-collector junction with minimal interface trap density, a nanomembrane interlayer device transfer is proposed as an alternative for fabrication of an HBT. There are two aims in this dissertation: to demonstrate an experimental HBT with a sufficient current gain above 20 and demonstrate using computer-aided modeling that sufficient frequency performance can be achieved - both to demonstrate that a wide-bandgap HBT is both possible and worth further exploration for RF electronics. In Chapter 1, the landscape of research into wide-bandgap bipolar transistors is presented. In Chapter 2, multiple methods of integration for different diode pairs within the HBT are evaluated for probability of success in the overall device, where a GaAs-GaN base-collector diode is demonstrated to have the best performance using nanomembrane layer transfer. Additionally, an MBE-grown AlGaAs-GaAs film stack was transferred and demonstrated an emitter-base structure can be transferred with no degradation in performance. In Chapter 3, fabrication of the HBT is demonstrated using the best methods selected from Chapter 2, where a AlGaAs-GaAs-GaN HBT was demonstrated to have a current gain greater than 70. In Chapter 4, technology computer-aided design simulations were developed to validate the DC results shown in Chapter 2 and 3, and simulated transition frequencies of at least 60 GHz for the experimental structure fabricated in Chapter 3. Finally, in Chapter 5, next steps are outlined for exploration beyond this initial proof-of-concept device. Taken altogether, this dissertation serves to demonstrate a device structure with the potential to vastly exceed existing solutions that can be applied to a vast array of wide-bandgap materials without being limited by its p-type analogues, enabling performance for a wide array of applications in the next generations of electronics.

Download or read book Silicon germanium Heterojunction Bipolar Transistors written by John D. Cressler and published by Artech House. This book was released on 2003 with total page 592 pages. Available in PDF, EPUB and Kindle. Book excerpt: This informative, new resource presents the first comprehensive treatment of silicon-germanium heterojunction bipolar transistors (SiGe HBTs). It offers you a complete, from-the-ground-up understanding of SiGe HBT devices and technology, from a very broad perspective. The book covers motivation, history, materials, fabrication, device physics, operational principles, and circuit-level properties associated with this new cutting-edge semiconductor device technology. Including over 400 equations and more than 300 illustrations, this hands-on reference shows you in clear and concise language how to design, simulate, fabricate, and measure a SiGe HBT.

Download or read book Ultra Fast Silicon Bipolar Technology written by Ludwig Treitinger and published by Springer Science & Business Media. This book was released on 2013-03-13 with total page 171 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since the first bipolar transistor was investigated in 1947, enormous efforts have been devoted to semiconductor devices. The strong world wide competition in fabricating metal-oxide-semiconductor field-effect of develop transistor (MOSFET) memories has accelerated the pace ments in semiconductor technology. Bipolar transistors play a major role due to their high-speed performance. Delay times of about 20 ps per gate have already been achieved. Because of this rapid technologi cal progress, it is difficult to predict the future with any certainty. In 1987 a special session on ultrafast bipolar transistors was held at the European Solid-State Device Research Conference. Its aim was to sum marize the most recent developments and to discuss the future of bip olar transistors. This book is based on that session but also includes contributions by other participants, such that a broad range of up-to is presented. Several conclusions can be drawn from date information this information: the first and most important is the very large poten tial for future progress still existing in this field. This progress is char acterized by the drive towards higher speed and lower power con sumption required for complex single-chip systems, as well as by sev eral concrete technological implementations for fulfilling these dem is that a large part of this potential can be ands. The second conclusion realized by rather unsophisticated techniques and configurations well suited to uncomplicated transfer to fabrication.

Download or read book SiGe GaAs and InP Heterojunction Bipolar Transistors written by Jiann S. Yuan and published by Wiley-Interscience. This book was released on 1999-04-12 with total page 496 pages. Available in PDF, EPUB and Kindle. Book excerpt: An up-to-date, comprehensive guide to heterojunction bipolar transistor technology. Owing to their superior performance in microwave and millimeter-wave applications, heterojunction bipolar transistors (HBTs) have become a major force in mobile and wireless communications. This book offers an integrated treatment of SiGe, GaAs, and InP HBTs, presenting a much-needed overview of HBTs based on different materials systems-their fabrication, analysis, and testing procedures. Highly respected expert Jiann S. Yuan discusses in depth the dc and RF performance and modeling of HBT devices, including simulation, thermal instability, reliability, low-temperature and high-temperature performance, and HBT analog and digital circuits. He provides step-by-step presentations of HBT materials-including Si HBTs and III-V and IV-IV compound HBTs, which are rarely described in the literature. Also covered are device and circuit interaction as well as specific high-speed devices in mobile and wireless communications. This immensely useful guide to a rapidly expanding field includes more than 200 figures, tables of different material systems in terms of their physical parameters, and up-to-date experimental results culled from the latest research. An essential resource for circuit and device designers in the semiconductor industry, SiGe, GaAs, and InP Heterojunction Bipolar Transistors is also useful for graduate students in electrical engineering, applied physics, and materials science.

Download or read book Wideband Transferred Substrate AlGaN GaN Heterojunction Bipolar Transistors for Microwave Power Applications written by and published by . This book was released on 2001 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report reviews efforts to develop growth and fabrication technology for the GaN HBT at UCSB. Conventional devices are grown by plasma assisted MBE on MOCVD GaN templates on sapphire and fully MOCVD devices. HBTs were also fabricated on LEO material identifying threading dislocations as the primary source of collector-emitter leakage which was reduced by 4 orders of magnitude for devices on non-dislocated material. Base doping studies show that the mechanism of this leakage is localized punch-through caused by compensation near the dislocation. The cause of the large offset voltage in common emitter characteristics is discussed. The Mg memory effect in MOCVD grown GaN HBTs is investigated and MBE grown device layers are shown to produce sharp doping profiles. The low current gain of these devices, (3-6) is discussed. An air bridge and etch back process is used to fabricate transistors compatible with RF testing. The devices had a common emitter dilferential current gain of 3.5 with a short circuit current gain cutoff frequency of 2 CHz and an emitter current density of over 6 kA/cmA2. Remaining issues are high base resistance, low current gain, and emitter mesa etch process development.

Download or read book Design and Fabrication of Gallium Nitride silicon Carbide Heterojunction Bipolar Transistors written by Hong Wu and published by . This book was released on 2003 with total page 262 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book High Frequency Bipolar Transistors written by Michael Reisch and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 671 pages. Available in PDF, EPUB and Kindle. Book excerpt: This modern book-length treatment gives a detailed presentation of high-frequency bipolar transistors in silicon or silicon-germanium technology, with particular emphasis placed on today's advanced compact models and their physical foundations.

Download or read book Compact Hierarchical Bipolar Transistor Modeling With Hicum written by Michael Schroter and published by World Scientific. This book was released on 2010-11-25 with total page 753 pages. Available in PDF, EPUB and Kindle. Book excerpt: Compact Hierarchical Bipolar Transistor Modeling with HiCUM will be of great practical benefit to professionals from the process development, modeling and circuit design community who are interested in the application of bipolar transistors, which include the SiGe:C HBTs fabricated with existing cutting-edge process technology. The book begins with an overview on the different device designs of modern bipolar transistors, along with their relevant operating conditions; while the subsequent chapter on transistor theory is subdivided into a review of mostly classical theories, brought into context with modern technology, and a chapter on advanced theory that is required for understanding modern device designs. This book aims to provide a solid basis for the understanding of modern compact models.

Download or read book Analysis and Development of High Voltage Bipolar Transistors for BiCMOS Smart Power Applications written by Roland Ryter and published by . This book was released on 1996 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt: