Compact and Broadband Microstrip Antennas

Kin-Lu Wong
John Wiley & Sons Inc.
327 pages; $94.95
ISBN: 0-471-41717-3

Modern portable communication equipment requires compact, broadband microstrip antennas. This book is intended to present new advanced designs of this type of antenna, offering more than 100 advanced microstrip antenna designs and their detailed experimental results.

The microstrip antenna designs covered in the book are divided into two groups: compact microstrip antennas and broadband microstrip antennas. Chapter 1 presents an introduction and overview of recent advances in the design of both compact and broadband microstrip antennas. Chapter 2 describes recent advances in compact microstrip antennas. Based on recent compact design techniques, such as using a shorted patch, a meandered patch, a meandered ground plane, an inverted U-shaped patch and an inverted-L patch, microstrip antenna designs are discussed and experimental results are presented. Chapter 3 discusses compact broadband microstrip antenna designs. Design techniques for achieving broadband operation with a reduced antenna size are described. Chapter 4 presents designs for compact dual-frequency and dual-polarized microstrip antennas. Advances in compact circularly polarized (CP) microstrip antennas are considered in Chapter 5. Designs for achieving gain-enhanced compact microstrip antennas are included in Chapter 6. Chapter 7 is devoted to recent advances in broadband microstrip antennas. Advances in broadband microstrip antennas with additional microstrip resonators, an air or foam substrate, slot loading, or integrated reactive loading, for example, are presented and discussed in detail. Chapter 8 presents broadband dual-frequency and dual-polarized microstrip antennas. Various design examples are presented and design considerations for achieving high isolation and low cross-polarization for broadband dual-polarized radiation are addressed. Finally, in Chapter 9, advances in broadband and dual-band circularly polarized microstrip antennas are discussed. Related broadband designs with single-feed, dual-feed and four-feed excitations are studied. In addition to obtaining a wide axial-ratio bandwidth, how to improve CP quality in the entire radiation pattern to achieve wide-angle coverage is shown.

To order this book, contact: John Wiley & Sons Inc., One Wiley Drive, Somerset, NJ 08875 (800) 225-5945.

Principles of Radar and Sonar Signal Processing

Francois Le Chevalier
Artech House Inc.
397 pages; $109, £76
ISBN: 1-58053-338-9

The recent evolution of radar and sonar has been marked by the rapid increase in information processing capabilities. By enabling the implementation of signal processing procedures that are closer to theoretically optimum ones, this evolution has revealed the arbitrary character of some of the underlying assumptions: single-scatterer target, additive white Gaussian noise. It has also led to the development of multifunction radars and sonars and has enabled various types of processing developed in sonar to be adapted to radar.

The book is divided into three parts. Chapters 1, 2 and 3 deal with processing in the presence of white noise - detection and location, ambiguity function and tracking systems. Chapters 4 and 5 discuss reception in colored noise - various structures of the optimum receiver, adaptive processing, application to jammer suppression and tracking, and location in passive listening mode. Chapters 6 and 7 deal with the physical characteristics of targets and backgrounds, their modeling, and the signal processing taking them into account. The various types of processing are illustrated by examples applied to real or simulated signals, thus giving an immediate feeling of the exact nature of the limitations encountered.

Focused on principles, the book is aimed at students attending specialist courses; it is derived from such a course, given at the Ecole Nationale Superieure des Telecommunications and the Ecole Nationale de l' Aeronautique et de l' Espace in France. However, the sections on adaptive processing, and target and background signatures should also be of interest to engineers working on the design and evaluation of radar and sonar systems. A detailed, equation-free summary is given at the beginning of each chapter, which describes in the simplest terms the key points of the approach and the main results described in the chapter. This format should help readers understand the general approach of each chapter, allowing them to turn directly to the next, without getting lost in the detailed calculations of the previous ones.

To order this book, contact: Artech House Inc., 685 Canton St., Norwood, MA 02062 (781) 769-9750 ext. 4002; or 46 Gilligham St., London SW1V 1HH, UK +44 (0) 207 596-8750.