Preface xiii List of abbreviations xv A guide to the book xxiii 1 Introduction 1 1.1 The vision of Ambient Intelligence 1 1.2 Application examples 3 1.3 Types of applications 6 1.4 Challenges for WSNs 7 1.4.1 Characteristic requirements 7 1.4.2 Requ
Principles of Planar Near-Field Antenna Measurements 介绍天线近场测量的基础知识 Contents Preface xi 1 Introduction 1 1.1 The phenomena of antenna coupling 1 1.2 Characterisation via the measurement process 4 1.2.1 Free space radiation pattern 6 1.2.2 Polarisatio