微带滤波器在RF/微波应用中的关键技术

需积分: 10 164 浏览量更新于2024-07-18 收藏 46.5MB PDF 举报

"Microstrip Filters for RF/Microwave Applications" 是一本关于射频/微波应用中的微带滤波器的专业书籍，由Jia-Sheng Hong编写，属于Wiley Series in Microwave and Optical Engineering系列，第二版发行。这本书由John Wiley & Sons, Inc.于2011年出版，并在加拿大同步发行。微带滤波器是射频和微波通信系统中至关重要的组成部分，它们主要用于去除不需要的信号频率成分，以改善信号质量，提高系统的选择性和性能。本书深入探讨了微带滤波器的设计、分析和实际应用，是微波工程领域的宝贵参考资料。微带滤波器的核心原理在于利用微带传输线结构，通过精心设计其尺寸和形状来实现特定频率范围内的信号过滤。这种技术的关键在于理解电磁场的传播特性以及如何利用这些特性来控制信号的频率响应。书中可能涵盖了以下关键知识点： 1. **微带传输线理论**：解释了微带线的基本工作原理，包括其电磁场分布、传播常数和特性阻抗等概念，这些都是设计微带滤波器的基础。 2. **滤波器设计方法**：包括了各种设计技术，如使用矩形、圆弧、开槽等不同形状的微带线，以及利用耦合结构（如耦合线、耦合槽）来实现带通、带阻、低通或高通滤波器。 3. **滤波器类型**：详细介绍了各种微带滤波器类型，如LC滤波器、阶梯型滤波器、耦合线滤波器、梳状滤波器和多模谐振器滤波器等，以及它们各自的特点和应用场景。 4. **滤波器性能参数**：探讨了诸如插入损耗、带宽、选择性、阻带抑制等关键性能指标的计算方法和优化策略。 5. **计算机辅助设计（CAD）工具**：介绍了如何使用电磁仿真软件（如HFSS、CST、ADS等）进行滤波器设计和优化，以及如何验证理论计算结果。 6. **制造与测试**：讲解了滤波器的制造工艺，包括材料选择、电路板制作和装配，以及实际测试与性能验证的方法。 7. **应用实例**：书中可能包含了一些实际的射频和微波系统中微带滤波器的应用案例，帮助读者理解理论知识在实践中的应用。 8. **最新进展**：对于第二版，可能还包含了近年来微带滤波器技术的最新发展，如微纳米制造技术、新型材料的应用，以及射频前端集成等前沿话题。通过阅读本书，读者不仅可以掌握微带滤波器的基本理论，还能学习到实用的设计技巧，从而能够设计出满足特定需求的高性能微带滤波器，应用于各种射频和微波通信系统中。

P1: OTA/XYZ P2: ABC

fm JWBS054-Hong November 17, 2010 8:49 Printer: Yet to come

xvi PREFACE TO THE FIRST EDITION

Much of work described herein has resulted from the authors’ research. The

authors wish to acknowledge the ﬁnancial supports of the UK EPSRC and the Euro-

pean Commission through the AdvancedCommunications Technologies and Services

(ACTS) program. They would also like to acknowledge their national and interna-

tional collaborators, including Professor Heinz Chaloupka at Wuppertal University

(Germany), Robert Greed at Marconi Research Center (U.K.), Dr. Jean-Claude Mage

at Thomson-CSF/CNRS (France), and Dieter Jedamzik formerly with GEC-Marconi

Materials Technology (U.K.).

The authors are indebted to many researchers for their published work, which were

rich sources of reference. Their sincere gratitude extends to the Editor of Wiley series

in microwave and optical engineering, Professor Kai Chang; the Executive Editor of

Wiley-Interscience, George Telecki; and the reviewers for their support in writing the

book. The help provided by Cassie Craig and other members of the staff at Wiley is

most appreciated. The authors also wish to thank their colleagues at the University

of Birmingham, including Professor Peter Hall, Dr. Fred Huang, Dr. Adrian Porch,

and Dr. Peter Gardener.

In addition, Jia-Sheng Hong would like to thank Professor John Allen at the

University of Oxford (U.K.), Professor Werner Wiesbeck at Kalsruhe Universiy

(Germany), and Dr. Nicholas Edwards at the British Telecom (U.K.) for their many

years’ support and friendship. Professor Joseph Helszajn at Heriot-Watt University

(U.K.), who sent his own book on ﬁlters to Jia-Sheng Hong, is also acknowledged.

Finally, Jia-Sheng Hong would like to express his deep appreciation to his wife,

Kai, and his son, Haide, for their tolerance and support, which allowed him to write

the book at home over many evenings, weekends, and holidays. In particular, without

the help of Kai, completing this book on time would not have been possible.

Jia-Sheng Hong

M. J. Lancaster

2001

P1: OTA/XYZ P2: ABC

c01 JWBS054-Hong November 16, 2010 6:45 Printer: Yet to come

CHAPTER ONE

Introduction

The term microwaves may be used to describe electromagnetic (EM) waves with

frequencies ranging from 300 MHz to 300 GHz, which correspond to wavelengths

(in free space) from 1 m to 1 mm. The EM waves with frequencies above 30 and up

to 300 GHz are also called millimeter waves, because their wavelengths are in the

millimeter range (1−10 mm). Above the millimeter wave spectrum is the infrared,

which comprises electromagnetic waves with wavelengths between 1 µm(10

−6

and 1 mm. Beyond the infrared spectrum is the visible optical spectrum, the ultraviolet

spectrum, and x rays. Below themicrowave frequency spectrumis the radio-frequency

(RF) spectrum. The frequency boundary between RF and microwaves is somewhat

arbitrary, depending on the particular technologies developed for the exploitation of

that speciﬁcfrequency range. Therefore, byextension, the RF/microwave applications

can be referred to as communications, radar, navigation, radio astronomy, sensing,

medical instrumentation, and others that explore the usage of frequency spectrums

in the range, for example, 300 kHz up to 300 GHz (Fig. 1.1). For convenience,

some of these frequency spectrums are further divided into many frequency bands,

as indicated in Fig. 1.1.

Filters play important roles in many RF/microwave applications. They are used

to separate or combine different frequencies. The electromagnetic spectrum is lim-

ited and has to be shared; ﬁlters are used to select or conﬁne the RF/microwave

signals within assigned spectral limits. Emerging applications, such as wireless com-

munications, continue to challenge RF/microwave ﬁlters with ever more stringent

requirements — higher performance, more functionalities such as tunable or recon-

ﬁgurable, smaller size, lighter weight, and lower cost. Depending on the requirements

and speciﬁcations, RF/microwave ﬁlters may be designed as lumped element or dis-

tributed element circuits, they may be realized in various transmission-line structures,

such as waveguide, coaxial line, coplanar waveguide (CPW), slotline, and microstrip.

Microstrip Filters for RF/Microwave Applications by Jia-Sheng Hong



2011 John Wiley & Sons, Inc.

P1: OTA/XYZ P2: ABC

c01 JWBS054-Hong November 16, 2010 6:45 Printer: Yet to come

INTRODUCTION 3

FIGURE 1.2 Microstrip ﬁlter linkage.

and equations; these are useful for the analysis of ﬁlter networks. Chapter 3 then

introduces basic concepts and theories for designing general RF/microwave ﬁl-

ters (including microstrip ﬁlters). The topics cover ﬁlter transfer functions (such as

Butterworth, Chebyshev, elliptic function, all-pass, and Gaussian response), lowpass

prototype ﬁlters and elements, frequency and element transformations, immittance

(impedance/admittance) inverters, Richards’ transformation, and Kuroda identities

for distributed elements. Effects of dissipation and unloaded quality factor of ﬁlter

elements on the ﬁlter performance are also discussed.

Chapter 4 summarizes basic concepts and design equations for microstrip lines,

coupled microstrip lines, discontinuities, lumped and distributed components, as

well as coplanar waveguide (CPW), and slotlines, which are useful for design of

ﬁlters. In Chapter 5, conventional microstrip lowpass and bandpass ﬁlters, such

as stepped-impedance ﬁlters, open-stub ﬁlters, semilumped element ﬁlters, end- and

parallel-coupled half-wavelength resonator ﬁlters, hairpin-line ﬁlters, interdigital and

combline ﬁlters, pseudocombline ﬁlters and stubline ﬁlters, are discussed with in-

structive design examples.

Chapter 6 discusses some typical microstrip highpass and bandstop ﬁlters. These

include quasilumped element and optimum distributed highpass ﬁlters, narrow-band

and wide-band bandstop ﬁlters, as well as ﬁlters for RF chokes. Design equations,

tables, and examples are presented for easy reference.

The remaining chapters of the book deal with more advanced topics. Chapter 7,

presents a comprehensive treatment of subjects regarding coupled resonator circuits.

These are of importance for design of RF/microwave ﬁlters, in particular, the narrow-

band bandpass ﬁlters that play a signiﬁcant role in many applications. There is a

P1: OTA/XYZ P2: ABC

c01 JWBS054-Hong November 16, 2010 6:45 Printer: Yet to come

4 INTRODUCTION

general technique for designing coupled resonator ﬁlters, which can be applied to

any type of resonator despite its physical structure. For examples, it can be applied for

the design of waveguide ﬁlters, dielectric resonator ﬁlters, ceramic combline ﬁlters,

microstrip ﬁlters, superconducting ﬁlters, and micromachined ﬁlters. This design

method is based on coupling coefﬁcients of intercoupled resonators and the external

quality factors of the input and output resonators. Since this design technique is so

useful and ﬂexible, it would be desirable to have a deep understanding of not only

its approach, but also its theory. For this purpose, the subjects cover (1) the formu-

lation of general coupling matrix, which is of importance for representing a wide

range of coupled-resonator ﬁlter topologies, and (2) the general theory of couplings

for establishing the relationship between the coupling coefﬁcient, and the physical

structure of coupled resonators. This leads to a very useful formulation for extract-

ing coupling coefﬁcients from EM simulations or measurements. Formulations for

extracting the external quality factors from frequency responses of the externally

loaded input/output resonators are derived next. Numerical examples are followed

to demonstrate how to use these formulations to extract coupling coefﬁcients and

external quality factors of microwave coupling structures for ﬁlter designs. In addi-

tion, a more advanced topic on general coupling matrix involving source and load is

addressed.

Chapter 8 is concerned with computer-aided design (CAD). Generally speaking,

any design involves using computers may be called CAD. There have been extraor-

dinary recent advances in CAD of RF/microwave circuits, particularly in full-wave

electromagnetic (EM) simulations. They have been implemented both in commercial

and speciﬁc in-house software and are being applied to microwave ﬁlters simulation,

modeling, design, and validation. The developments in this area are certainly stimu-

lated by increasing computer power. Another driving force for the developments is

the requirement of CAD for low-cost and high-volume production. In general, the

investment for tooling, materials, and labor mainly affect the cost of ﬁlter production.

Labor costs include those for design, fabrication, testing, and tuning. Here the costs

for the design and tuning can be reduced greatly by using CAD, which can provide

more accurate design with less design iterations, leading to ﬁrst-pass or tuneless

ﬁlters. This chapter discusses computer simulation and/or computer optimization.

It summarizes some basic concepts and methods regarding ﬁlter design by CAD.

Typical examples of the applications, including ﬁlter synthesis by optimization, are

described. Many more CAD examples, particularly those based on full-wave EM

simulation, can be found throughout this book.

In Chapter 9, we discuss the designs of some advanced ﬁlters, including selective

ﬁlters with a single pair of transmission zeros, cascaded quadruplet (CQ) ﬁlters, trisec-

tion and cascaded trisection (CT) ﬁlters, cross-coupled ﬁlters using transmission-line

inserted inverters, linear phase ﬁlters for group-delay equalization, extracted-pole

ﬁlters, canonical ﬁlters, and multiband ﬁlters. These types of ﬁlters, which are dif-

ferent from conventional Chebyshev ﬁlters, must meet stringent requirements from

RF/microwave systems, particularly from wireless communications systems.

Chapter 10 is intended to describe novel concepts, methodologies, and designs

for compact ﬁlters and ﬁlter miniaturization. The new types of ﬁlters discussed

剩余654页未读，继续阅读

weixin_42020169

粉丝: 0
资源: 1

微带滤波器在RF/微波应用中的关键技术

Microstrip Filters for RF Microwave Applications .pdf

Microstrip Filters for RF Microwave Applications

Microstrip Filters for RF Microwave Applications 2nd

microstrip filters for rf / microwave applications 2nd

Microstrip Filters for RF Microwave Applications 2001

Microstrip Filters for RF Microwave Applications second edition

Microstrip Filters for RF Microwave Application.pdf

microstrip_filters_for_rf_microwave_application

基于java的房地产销售管理系统的开题报告.docx

小程序 SKU 组件.zip

最新资源