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Author: Jia-Sheng Hong Publisher: John Wiley & Sons ISBN: 1118002121 Category : Technology & Engineering Languages : en Pages : 608
Book Description
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.
Author: Jia-Sheng Hong Publisher: John Wiley & Sons ISBN: 1118002121 Category : Technology & Engineering Languages : en Pages : 608
Book Description
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.
Author: Jia-Shen G. Hong Publisher: John Wiley & Sons ISBN: 0471464201 Category : Technology & Engineering Languages : en Pages : 487
Book Description
Advanced, specialized coverage of microstrip filter design Microstrip Filters for RF/Microwave Applications is the only professional reference focusing solely on microstrip filters. It offers a unique and comprehensive treatment of filters based on the microstrip structure and includes full design methodologies that are also applicable to waveguide and other transmission line filters. The authors include coverage of new configurations with advanced filtering characteristics, new design techniques, and methods for filter miniaturization. The book utilizes numerous design examples to illustrate and emphasize computer analysis and synthesis while also discussing the applications of commercially available software. Other highlights include: Lowpass and bandpass filters Highpass and bandstop filters Full-wave electromagnetic simulation Advanced materials and technologies Coupled resonator circuits Computer-aided design for low-cost/high-volume production Compact filters and filter miniaturization Microstrip Filters for RF/Microwave Applications is not only a valuable design resource for practitioners, but also a handy reference for students and researchers in microwave engineering.
Author: Adam Reda Hasan Alhawari Publisher: ISBN: Category : Languages : en Pages : 146
Book Description
Microstrip filters are essential components utilized in the RF/Microwave applications because of their low loss and simple structure. Moreover, it can be fabricated using simple printed circuit technology and characterize main advantages in RF/Microwave filters like high performance, light weight and low cost which the fact track of continuous evolution in wireless communication systems highly demands. This thesis presents design and development of three different microstrip bandpass filters (BPFs) for high selectivity applications. A fourth order microstrip BPF was designed using Chebychev lowpass prototype with passband ripple of 0.05 dB and bandwidth of 120 MHz, which operates at center frequency of 2.3 GHz. This filter is designed by using coupled spiral resonator, where these types of resonator structures simplify the design method for microstrip BPF and yet more efficient. This filter design is then rearranged and modified by using square spiral resonator structures and embedded-resonator topology with the same fundamental frequency to make it more compact; furthermore, it has high quality performance in terms of the frequency responses. All the microstrip BPF designs were developed and analyzed by a 3-D electromagnetic simulator. To confirm the simulation results, the three proposed filters are fabricated on R/T Duroid 5880 with dielectric constant of 2.2. The Experimental measurements are carried out using an Agilent N5230A network analyzer. The simulated and measured results are presented, compared and discussed. The analysis indicates a fairly good agreement between simulation and measurement. Finally, compact microstrip BPFs which could demonstrate high quality performance are thoroughly investigated. In this design, the minimum measured insertion loss is 2.65 dB, and the measured return loss is greater than 11 dB in the passband operating at 2.3 GHz, with a fractional bandwidth of 5.2% with two transmission zeros on both sides of the passband. The total size of this layout is 24.74 x 21.2 mm2. This new filter provides a significant size reduction of more than 30% and 18%, with respect to the conventional microstrip BPFs and the recently reported bandpass filter by Wang and others in 2008, respectively, at the same center frequency. Later, multilayer technology is used to reduce more than 25% of the filter size; which is much smaller compared to the microstrip filters using single layer structure. The new filter structure consists of four resonators placed on two stacked layers where the metallic ground plane is deposited onto bottom surface of the dielectric. The measured minimum passband insertion loss is 5.2 dB with measured return loss is no more than -17 dB in the passband. The overall filter size is 380 mm2, which is approximately 10% smaller compared to the multilayer filter reported by Denidni and Djaiz in 2005. It is also reduced more than 25% and 41% compared to our proposed single layer microstrip filter and bandpass filter reported by Wang and others in 2008, respectively, at the same center frequency. It is a promising product to attract usage in modern wireless communication system applications which demand compact size bandpass filters at very low insertion loss but high selectivity, and good out-of-band rejection.
Author: Lakshman Athukorala Publisher: LAP Lambert Academic Publishing ISBN: 9783847335542 Category : Languages : en Pages : 152
Book Description
New challenges are constantly faced in the development of RF and microwave filters, which have not only sustained but fuelled microwave filter research over the many years. These developments have encouraged new solutions for the realization of compact, low loss, highly selective RF and microwave filters. This text presents a novel distributed dual-mode resonator configuration which allows the realisation of tunable, highly compact microwave bandpass filters. Many interesting and attractive characteristics of the resonator are explored in detail. Application of this resonator in bandpass filter design is discussed with examples illustrating the design process with theoretical and experimental results to showcase filter performance. All-pole, generalised Chebyshev and dual-bandpass filters are shown to be easily developed with the novel resonator while achieveing a highly miniature footprint and a wide stopband. Finally, by employing a novel non-linear distortion enhancement technique readily applicable to this resonator, the design of highly linear tunable filter is discussed.
Author: Jia-Sheng Hong
Author: Jia-Sheng Hong
Author: Jia-Shen G. Hong
Author: Adam Reda Hasan Alhawari
Author: Lakshman Athukorala
Author: Vesna Crnojević-Bengin
Author: Kenneth A. Gilmore
Author: Arzani Deraman
Author: Jeffrey Oramel Brown
Author: 
Author: John R. Crute