image

Next-generation communication systems will exploit the mm-wave frequency bands. So there is need to establish design rules for components to be used at these frequencies. These components will need to be compact, as well as low cost, to be economically viable. Developments in materials for thick film and low-temperature co-fired ceramic (LTTC) circuits have made these technologies viable and attractive options for very high-frequency circuits. It is the investigation of the practical implementation of these technologies for next-generation wireless components that forms the main theme of this book. It presents the approach of circuit miniaturisation at microwave and millimetre-wave frequencies. It includes the techniques for the characterization of dielectric materials, mainly LTCC and barium strontium Titanate (BST), using a free space method at frequencies between 145 and 200 GHz.

A new technique to characterize dual-layer materials is also discussed. Using BST as a distributed varactor, a new, miniature tuneable bandpass filter was developed. The filter performance shows a significant improvement in performance compared to other similar structures, reported elsewhere. Besides, the development of a narrowband bandpass filter at 150 GHz, using a rectangular waveguide as a prototype for an LTCC design is also discussed. In this filter, the design procedures commonly used at lower frequencies were modified to give optimum results at high mm-wave frequencies. The effect of miniaturizing the area occupied by microwave and mm-wave circuits was also investigated. This led to new information on the optimum spacing of circuit interconnections, and on the effectiveness of isolation structures, for both single and multilayer circuits, operating over a given frequency range.


Instructor Biography

Nurul Huda Osman, PhD, is a Senior Lecturer at the Applied Electromagnetic Laboratory, Department of Physic, Faculty of Science, Universiti Putra Malaysia (UPM). Areas of research include RF and microwave technology, EMI shielding, material for high-frequency applications, impedance spectroscopy and sensors and instrumentation. Over 50 technical publications are published, including proceedings and high-impact journals.

Muhammad Mahyiddin Ramli, PhD, is an Associate Professor at the Institute of Nano Electronic Engineering (INEE), Universiti Malaysia Perlis (UniMAP). Areas of his research include graphene synthesis and characterisation for gas sensors and biomedical devices. Over 150 technical publications are published, including journals, books, and proceedings. Besides, numerous awards have been won, including Gold and Special Awards in numerous exhibitions.

Norizah Abd Karim, PhD, is a Senior Lecturer at the Faculty of Chemical Engineering Technology, Universiti Malaysia Perlis (UniMAP). Areas of research include graphite synthesis, graphene synthesis, and characterization. Over 20 technical publications are published, including proceedings and journals. Besides, numerous awards have been won, including Gold Medals and Special Awards in numerous invention exhibitions.

Copyright © 2024 MindAppz Sdn Bhd. All rights reserved.