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Author: Mina Danesh Publisher: ISBN: Category : Languages : en Pages : 0
Book Description
A novel parameter extraction technique is applied to the modeling of rectangular spiral inductors and validated with measurements and simulations. To enhance the inductor quality ('Q') factor, a differentially excited symmetric inductor is used. Compared with a single-ended configuration, the differential structure offers a higher 'Q'-factor over a wider range of frequencies. Application of the symmetric inductor model is demonstrated using two oscillator designs in which a differentially excited symmetric inductor is compared with conventional spiral inductors. The symmetric inductor improves the overall circuit performance and saves chip area.
Author: Mina Danesh Publisher: ISBN: Category : Languages : en Pages : 0
Book Description
A novel parameter extraction technique is applied to the modeling of rectangular spiral inductors and validated with measurements and simulations. To enhance the inductor quality ('Q') factor, a differentially excited symmetric inductor is used. Compared with a single-ended configuration, the differential structure offers a higher 'Q'-factor over a wider range of frequencies. Application of the symmetric inductor model is demonstrated using two oscillator designs in which a differentially excited symmetric inductor is compared with conventional spiral inductors. The symmetric inductor improves the overall circuit performance and saves chip area.
Author: Richard D. Lutz Publisher: ISBN: Category : Electric inductors Languages : en Pages : 310
Book Description
Spiral inductors are a key component of mixed-signal and analog integrated circuits (IC's). Such circuits are often fabricated using silicon-based technology, owing to the inherent low-cost and high volume production aspects. However, semiconducting substrate materials such as silicon can have adverse effects on spiral inductor performance due to the lossy nature of the material. Since the operating requirements of many high performance IC's demand reactive components that have high Quality Factor's (Q's), and are thus low loss devices, the need for accurate modeling of such structures over lossy substrate media is key to successful circuit design. The Q's of commonly available off-chip inductors are in the range of 50- 100 for frequencies ranging up to a few gigahertz. Since off-chip inductors must be connected through package pins, solder bumps, etc., which all contribute additional loss and thus lower the apparent Q of an external device, the typical on-chip Q requirement for a given RFIC design is generally lower than that for an off-chip spiral solution. However, a spiral inductor that was designed and fabricated originally in a low loss technology such as thin-film alumina may have substantially worse performance in regard to Q if it is used in a silicon-based technology, owing to the conductive substrate. For this reason, it is imperative that semiconducting substrate effects be accurately accounted for by any modeling effort for monolithic spirals in RFICs. This thesis presents a complete modeling solution for both single and multi-level spiral inductors over lossy silicon substrates, along with design considerations and methods for mitigation of the undesirable performance effects of semiconducting substrates. The modeling solution is based on Spectral Domain Approach (SDA) solutions for frequency dependent complex capacitive (i.e. both capacitance and conductance) parasitic elements combined with a quasi-magnetostatic field solution for calculation of the frequency dependent complex inductive (i.e. both inductance and resistance) terms. The effects of geometry and process variations are considered as well as the incorporation of Patterned Ground Shields (PGS) for the purpose of Q enhancement. Proposals for future extensions of this work are discussed in the concluding chapter.
Author: Ali M. Niknejad Publisher: Springer Science & Business Media ISBN: 0306470381 Category : Technology & Engineering Languages : en Pages : 193
Book Description
The modern wireless communication industry has put great demands on circuit designers for smaller, cheaper transceivers in the gigahertz frequency range. One tool which has assisted designers in satisfying these requirements is the use of on-chip inductiveelements (inductors and transformers) in silicon (Si) radio-frequency (RF) integrated circuits (ICs). These elements allow greatly improved levels of performance in Si monolithic low-noise amplifiers, power amplifiers, up-conversion and down-conversion mixers and local oscillators. Inductors can be used to improve the intermodulation distortion performance and noise figure of small-signal amplifiers and mixers. In addition, the gain of amplifier stages can be enhanced and the realization of low-cost on-chip local oscillators with good phase noise characteristics is made feasible. In order to reap these benefits, it is essential that the IC designer be able to predict and optimize the characteristics of on-chip inductiveelements. Accurate knowledge of inductance values, quality factor (Q) and the influence of ad- cent elements (on-chip proximity effects) and substrate losses is essential. In this book the analysis, modeling and application of on-chip inductive elements is considered. Using analyses based on Maxwells equations, an accurate and efficient technique is developed to model these elements over a wide frequency range. Energy loss to the conductive substrate is modeled through several mechanisms, including electrically induced displacement and conductive c- rents and by magnetically induced eddy currents. These techniques have been compiled in a user-friendly software tool ASITIC (Analysis and Simulation of Inductors and Transformers for Integrated Circuits).
Author: Egidio Ragonese Publisher: CRC Press ISBN: 1420088459 Category : Computers Languages : en Pages : 172
Book Description
With the ability to improve performance, reduce fabrication costs, and increase integration levels of both RX and TX sections of the RF/mm-wave front-end, passive inductive components have experienced extraordinary growth in ICs. Therefore, a fundamental understanding of monolithic inductors and transformers has become essential for all process eng
Author: John W. M. Rogers Publisher: Artech House ISBN: 1607839806 Category : Technology & Engineering Languages : en Pages : 535
Book Description
This newly revised and expanded edition of the 2003 Artech House classic, Radio Frequency Integrated Circuit Design, serves as an up-to-date, practical reference for complete RFIC know-how. The second edition includes numerous updates, including greater coverage of CMOS PA design, RFIC design with on-chip components, and more worked examples with simulation results. By emphasizing working designs, this book practically transports you into the authors' own RFIC lab so you can fully understand the function of each design detailed in this book. Among the RFIC designs examined are RF integrated LC-based filters, VCO automatic amplitude control loops, and fully integrated transformer-based circuits, as well as image reject mixers and power amplifiers. If you are new to RFIC design, you can benefit from the introduction to basic theory so you can quickly come up to speed on how RFICs perform and work together in a communications device. A thorough examination of RFIC technology guides you in knowing when RFICs are the right choice for designing a communication device. This leading-edge resource is packed with over 1,000 equations and more than 435 illustrations that support key topics.
Author: Jaime Aguilera Publisher: Springer Science & Business Media ISBN: 0306487055 Category : Technology & Engineering Languages : en Pages : 203
Book Description
Intended for engineers who are starting out in the design of integrated inductors, this book describes the whole design flow, basic selection of the geometry and optimisation of the quality by redesigning the geometry, measurement and de-embedding and characterisation.
Author: John D. Cressler Publisher: CRC Press ISBN: 1420026585 Category : Technology & Engineering Languages : en Pages : 1248
Book Description
An extraordinary combination of material science, manufacturing processes, and innovative thinking spurred the development of SiGe heterojunction devices that offer a wide array of functions, unprecedented levels of performance, and low manufacturing costs. While there are many books on specific aspects of Si heterostructures, the Silicon Heterostructure Handbook: Materials, Fabrication, Devices, Circuits, and Applications of SiGe and Si Strained-Layer Epitaxy is the first book to bring all aspects together in a single source. Featuring broad, comprehensive, and in-depth discussion, this handbook distills the current state of the field in areas ranging from materials to fabrication, devices, CAD, circuits, and applications. The editor includes "snapshots" of the industrial state-of-the-art for devices and circuits, presenting a novel perspective for comparing the present status with future directions in the field. With each chapter contributed by expert authors from leading industrial and research institutions worldwide, the book is unequalled not only in breadth of scope, but also in depth of coverage, timeliness of results, and authority of references. It also includes a foreword by Dr. Bernard S. Meyerson, a pioneer in SiGe technology. Containing nearly 1000 figures along with valuable appendices, the Silicon Heterostructure Handbook authoritatively surveys materials, fabrication, device physics, transistor optimization, optoelectronics components, measurement, compact modeling, circuit design, and device simulation.
Author: John D. Cressler Publisher: CRC Press ISBN: 1420066951 Category : Technology & Engineering Languages : en Pages : 360
Book Description
No matter how you slice it, semiconductor devices power the communications revolution. Skeptical? Imagine for a moment that you could flip a switch and instantly remove all the integrated circuits from planet Earth. A moment’s reflection would convince you that there is not a single field of human endeavor that would not come to a grinding halt, be it commerce, agriculture, education, medicine, or entertainment. Life, as we have come to expect it, would simply cease to exist. Drawn from the comprehensive and well-reviewed Silicon Heterostructure Handbook, this volume covers SiGe circuit applications in the real world. Edited by John D. Cressler, with contributions from leading experts in the field, this book presents a broad overview of the merits of SiGe for emerging communications systems. Coverage spans new techniques for improved LNA design, RF to millimeter-wave IC design, SiGe MMICs, SiGe Millimeter-Wave ICs, and wireless building blocks using SiGe HBTs. The book provides a glimpse into the future, as envisioned by industry leaders.
Author: Mina Danesh
Author: Mina Danesh
Author: 
Author: Richard D. Lutz
Author: Ali M. Niknejad
Author: Egidio Ragonese
Author: John W. M. Rogers
Author: Chik Patrick Yue
Author: Jaime Aguilera
Author: John D. Cressler
Author: John D. Cressler