Low Power Emerging Wireless Technologies

5	Ultrawide Bandwidth Radio Frequency Identification and Localization
Davide Dardari

CONTENTS

5.1    Introduction

5.2    The UWB Technology

5.2.1    UWB: Definitions and Regulatory Issues

5.2.2    Impulse Radio UWB

5.2.3    Ranging Capability of UWB Signals

5.3    UWB Propagation

5.3.1    UWB Propagation Characteristics

5.3.2    Backscatter Propagation

5.4    UWB RFID and Localization with Active Tags

5.4.1    Low Duty Cycle UWB Tags

5.4.2    Localization Capability

5.4.3    The IEEE 802.15.4f Standard

5.5    UWB RFID and Localization with (Semi)Passive Tags

5.5.1    Hybrid Tags Based on UHF and UWB Modulations

5.5.2    Tags Based on Backscatter Modulation

5.5.3    Localization Capability

5.6    Advanced Issues

5.6.1    Chipless Tags ...