Meet the editor

Mohamed Kheir was born in Cairo, Egypt, in 1977. He received his MSc degree in Communications Technology from the University of Ulm, Ulm, Germany in 2005, and his PhD degree (with honors) in Information Engineering and Technology from the German University in Cairo, Egypt, in collaboration with Magdeburg University, Germany, in 2011. From 2012 to 2015, he was a Lecturer at the Chair of Microwave Engineering, University

of Kiel, Germany, where he was involved in several research projects and teaching duties. From October 2015 to October 2019, he has been a Senior RF-Development Engineer with IMS Connector Systems Group, Germany, where he is responsible for the design and development of high-speed and multi-channel connectors for automotive and 5G applications. Since November 2019, he has been working as a Senior EMC Expert at Keysight Technologies, Germany.

His research interests include microwave/mm wave integrated circuits, EMC measurements, and UWB Technology.

Dr. Kheir serves as an Associate Editor at IEEE Access and IEEE Internet of Things Journal. He is also a reviewer for multiple IEEE/IET journals and a TPC-member for many conferences. Dr. Kheir is the recipient of several prestigious awards and honors from different conferences and organizations worldwide.

Contents

Applications

Diversity

**Preface III**

**Chapter 1 1**

**Chapter 2 19**

**Chapter 3 41** Inner Tapered Tree-Shaped Ultra-Wideband Fractal Antenna with Polarization

**Chapter 4 59**

**Chapter 5 77**

**Chapter 6 101**

Passive Components for Ultra-Wide Band (UWB) Applications

Frequency Reconfigurable UWB Antenna Design for Wireless Applications

UWB Circuits and Sub-Systems for Aerospace, Defence and Security

*by Ritesh Kumar Saraswat and Mithilesh Kumar*

*by Ernesto Limiti and Patrick E. Longhi*

*by Sarthak Singhal and Amit Kumar Singh*

*by Symeon Nikolaou and Abdul Quddious*

*by Li-Tian Wang, Yang Xiong and Ming He*

*by Dalia N. Elsheakh and Esmat A. Abdallah*

Antennas for UWB Applications

Review on UWB Bandpass Filters
