Practical Filters and Couplers

Practical Filters and Couplers
Author: Noble Publishing Corporation
Publisher: SciTech Publishing
Total Pages: 82
Release: 2001
Genre: Directional couplers
ISBN: 1884932215

Annotation A collection of 16 articles compiled from previously published magazine articles. The articles were selected based on their meeting one or more of three criteria: reviewing important techniques, solving practical problems, or presenting original ideas. Among the specific articles within the broader field of filters and couplers are discussions of matching double-tuned LC filters, microwave multiplexers using complementary filters, RF capacitive-coupled filters, and a new approach to broadband transmission line hybrid design. Annotation c. Book News, Inc., Portland, OR (booknews.com).

More Practical Filters and Couplers

More Practical Filters and Couplers
Author: Noble Publishing Corporation
Publisher: Noble Publishing
Total Pages: 106
Release: 2002-01-01
Genre: Technology & Engineering
ISBN: 9781884932311

A continuation of Practical Filters and Couplers, this guide collects 18 additional articles of interest on practical filters, couplers and baluns. Focuses on articles covering tunable structures and couplers featuring lumped-element, planar and active component approaches. Contents: Introduction; Practical Microwave Filter Design; An Efficient Procedure for Narrow-Band Band-Pass Filter Design; Construction of High-Reliability, Low-Loss Microwave Filters; Dual Mode Microstrip Filters; Design of a Simple Tunable/Switchable Band-Pass Filter; Electronically Tuned L-S Band Filters; 4 to 40 GHz Ferrite-Tuned Filter; A New Tunable Branch Line Coupler; Notes on Power Combiner and Splitter Circuits; A Wideband Balun-How Does it Work?; Broadband, VHF Lumped-Element Couplers Using Imperfect Transformers; A Lumped-Element Rat Race Coupler; Design of Baluns Using Backward-Wave Couplers; Analysis of a Variable Attenuator Using a 3 dB Quadrature Coupler.

Modern RF and Microwave Filter Design

Modern RF and Microwave Filter Design
Author: Protap Pramanick
Publisher: Artech House
Total Pages: 437
Release: 2016-08-31
Genre: Technology & Engineering
ISBN: 1630813826

This authoritative resource presents current practices for the design of RF and microwave filters. This one-stop reference provides readers with essential and practical information in order to design their own filter design software package, ultimately saving time and money. Essential building blocks for each type of filter are presented including network theory, transmission lines, and coupling mechanisms. This book presents a detailed discussion of the Low Pass Filter prototype, which is then extended to other configurations such as high pass, band pass, band stop, diplexers, and multiplexers. Microwave Network Theory and Transmission Line Coupling Mechanisms are presented along with a comprehensive discussion of the characteristics of commonly used transmission lines such as waveguides, Striplines, and Microstrip lines. Numerous design examples are presented to demonstrate an inclusive design methodology.

Microwave Filters for Communication Systems

Microwave Filters for Communication Systems
Author: Richard J. Cameron
Publisher: John Wiley & Sons
Total Pages: 928
Release: 2018-04-17
Genre: Technology & Engineering
ISBN: 1118274342

An in-depth look at the state-of-the-art in microwave filter design, implementation, and optimization Thoroughly revised and expanded, this second edition of the popular reference addresses the many important advances that have taken place in the field since the publication of the first edition and includes new chapters on Multiband Filters, Tunable Filters and a chapter devoted to Practical Considerations and Examples. One of the chief constraints in the evolution of wireless communication systems is the scarcity of the available frequency spectrum, thus making frequency spectrum a primary resource to be judiciously shared and optimally utilized. This fundamental limitation, along with atmospheric conditions and interference have long been drivers of intense research and development in the fields of signal processing and filter networks, the two technologies that govern the information capacity of a given frequency spectrum. Written by distinguished experts with a combined century of industrial and academic experience in the field, Microwave Filters for Communication Systems: Provides a coherent, accessible description of system requirements and constraints for microwave filters Covers fundamental considerations in the theory and design of microwave filters and the use of EM techniques to analyze and optimize filter structures Chapters on Multiband Filters and Tunable Filters address the new markets emerging for wireless communication systems and flexible satellite payloads and A chapter devoted to real-world examples and exercises that allow readers to test and fine-tune their grasp of the material covered in various chapters, in effect it provides the roadmap to develop a software laboratory, to analyze, design, and perform system level tradeoffs including EM based tolerance and sensitivity analysis for microwave filters and multiplexers for practical applications. Microwave Filters for Communication Systems provides students and practitioners alike with a solid grounding in the theoretical underpinnings of practical microwave filter and its physical realization using state-of-the-art EM-based techniques.

Reflectionless Filters

Reflectionless Filters
Author: Matthew A. Morgan
Publisher: Artech House
Total Pages: 277
Release: 2017-01-31
Genre: Technology & Engineering
ISBN: 1630814059

This invaluable resource introduces progressive techniques for the creation of sophisticated reflectionless filter topologies that have identically zero reflection coefficient at all frequencies. Practical implementations are discussed along with their advantages when compared to classical absorptive filters and their benefits in real-world systems such as up/down converters, multiplier chains, broadband amplifiers, analog-to-digital converters, and time-domain applications. This book offers insight into the innovative process of developing reflectionless filters from first principles using both lumped elements and transmission lines. Tools for the creation of reflectionless multiplexers, matched sloped equalizers, and advanced, high-order, and nonplanar topologies are also presented.

A Practical Design of Lumped, Semi-lumped & Microwave Cavity Filters

A Practical Design of Lumped, Semi-lumped & Microwave Cavity Filters
Author: Dhanasekharan Natarajan
Publisher: Springer Science & Business Media
Total Pages: 146
Release: 2012-10-13
Genre: Technology & Engineering
ISBN: 364232861X

This book presents the application of microwave literature for designing lumped/semi-lumped filters and combline/iris-coupled microwave cavity filters. It provides the physical understanding of the terms and characteristics of radio frequency (RF) filters. The book complements engineering text books on RF components and provides support for the project assignments of students. In addition to the functional design of RF filters, the integrated design approach for produceability and reliability is explained.

Microwave Bandpass Filters for Wideband Communications

Microwave Bandpass Filters for Wideband Communications
Author: Lei Zhu
Publisher: John Wiley & Sons
Total Pages: 184
Release: 2011-12-28
Genre: Technology & Engineering
ISBN: 1118197976

This book will appeal to scientists and engineers who are concerned with the design of microwave wideband devices and systems. For advanced (ultra)-wideband wireless systems, the necessity and design methodology of wideband filters will be discussed with reference to the inherent limitation in fractional bandwidth of classical bandpass filters. Besides the detailed working principles, a large number of design examples are demonstrated, which can be easily followed and modified by the readers to achieve their own desired specifications. Therefore, this book is of interest not only to students and researchers from academia, but also to design engineers in industry. With the help of complete design procedures and tabulated design parameters, even those with little filter design experience, will find this book to be a useful design guideline and reference, which can free them from tedious computer-aided full-wave electromagnetic simulations. Among different design proposals, wideband bandpass filters based on the multi-mode resonator have demonstrated many unparalleled attractive features, including a simple design methodology, compact size, low loss and good linearity in the wide passband, enhanced out-of-band rejection, and easy integration with other circuits/antennas. A conventional bandpass filter works under single dominant resonant modes of a few cascaded transmission line resonators and its operating bandwidth is widened via enhanced coupling between the adjacent resonators. However, this traditional approach needs an extremely high coupling degree of coupled-lines while producing a narrow upper stopband between the dominant and harmonic bands. As a sequence, the desired dominant passband is restricted to an extent less than 60% in fractional bandwidth. To circumvent these issues and break with the tradition, a filter based on the multiple resonant modes was initially introduced in 2000 by the first author of this book. Based on this novel concept, a new class of wideband filters with fractional bandwidths larger than 60% has been successfully developed so far. This book, presents and characterizes a variety of multi-mode resonators with stepped-impedance or loaded-stub configurations using the matured transmission line theory for development of advanced microwave wideband filters.

Microstrip Filters for RF / Microwave Applications

Microstrip Filters for RF / Microwave Applications
Author: Jia-Sheng Hong
Publisher: John Wiley & Sons
Total Pages: 608
Release: 2011-01-06
Genre: Technology & Engineering
ISBN: 1118002121

The first edition of “Microstrip Filters for RF/Microwave Applications” was published in 2001. Over the years the book has been well received and is used extensively in both academia and industry by microwave researchers and engineers. From its inception as a manuscript the book is almost 8 years old. While the fundamentals of filter circuits have not changed, further innovations in filter realizations and other applications have occurred with changes in the technology and use of new fabrication processes, such as the recent advances in RF MEMS and ferroelectric films for tunable filters; the use of liquid crystal polymer (LCP) substrates for multilayer circuits, as well as the new filters for dual-band, multi-band and ultra wideband (UWB) applications. Although the microstrip filter remains as the main transmission line medium for these new developments, there has been a new trend of using combined planar transmission line structures such as co-planar waveguide (CPW) and slotted ground structures for novel physical implementations beyond the single layer in order to achieve filter miniaturization and better performance. Also, over the years, practitioners have suggested topics that should be added for completeness, or deleted in some cases, as they were not very useful in practice. In view of the above, the authors are proposing a revised version of the “Microstrip Filters for RF/Microwave Applications” text and a slightly changed book title of “Planar Filters for RF/Microwave Applications” to reflect the aforementioned trends in the revised book.

Practical Analog and RF Electronics

Practical Analog and RF Electronics
Author: Daniel B. Talbot
Publisher: CRC Press
Total Pages: 167
Release: 2020-09-23
Genre: Technology & Engineering
ISBN: 1000178420

This is a book about real-world design techniques for analog circuits: amplifiers, filters, injection-locked oscillators, phase-locked loops, transimpedance amplifiers, group delay correction circuits, notch filters, and spectrum regrowth in digital radio frequency (RF) transmitters, etc. The book offers practical solutions to analog and RF problems, helping the reader to achieve high-performance circuit and system design. A variety of issues are covered, such as: How to flatten group delay of filters How to use reciprocity to advantage How to neutralize a parasitic capacitance How to deepen a notch by adding only two components to the network How to demodulate a signal using the secant waveform and its benefit How to flatten the frequency response of a diode detector When to use a transimpedance amplifier and how to maximize its performance How to recover non-return-to-zero (NRZ) data when alternating current (AC) coupling is required Why phase noise corrupts adjacent communication channels Simple method to prevent false locking in phase-locked loops How to improve the bandwidth of amplification by using current conveyors A very simple impedance matching technique requiring only one reactive component How to use optimization Quadrature distortion and cross-rail interference This book is meant to be a handbook (or a supplemental textbook) for students and practitioners in the design of analog and RF circuitry with primary emphasis on practical albeit sometimes unorthodox circuit realizations. Equations and behavioral simulations result in an abundance of illustrations, following a "words and pictures" easy-to-understand approach. Teachers will find the book an important supplement to a standard analog and RF course, or it may stand alone as a textbook. Working engineers may find it useful as a handbook by bookmarking some of the step-by-step procedures, e.g., the section on simplified impedance matching or group delay flattening.