This book focuses on the modelling methodology of microstrip interconnects, discussing various structures of single-input multiple-output (SIMO) tree interconnects for signal integrity (SI) engineering. Further, it describes lumped and distributed transmission line elements based on single-input single-output (SIMO) models of symmetric and asymmetric trees, and investigates more complicated phenomenon, such as interbranch coupling. The modelling approaches are based on the analytical methods using the Z-, Y- and T-matrices. The established method enables the S-parameters and voltage transfer function of SIMO tree to be determined. Providing illustrative results with frequency and time domain analyses for each tree interconnect structure, the book is a valuable resource for researchers, engineers, and graduate students in fields of analogue, RF/microwave, digital and mixed circuit design, SI and manufacturing engineering.

This book focuses on the modelling methodology of microstrip interconnects, discussing various structures of single-input multiple-output (SIMO) tree interconnects for signal integrity (SI) engineering. Further, it describes lumped and distributed transmission line elements based on single-input single-output (SIMO) models of symmetric and asymmetric trees, and investigates more complicated phenomenon, such as interbranch coupling. The modelling approaches are based on the analytical methods using the Z-, Y- and T-matrices. The established method enables the S-parameters and voltage transfer function of SIMO tree to be determined. Providing illustrative results with frequency and time domain analyses for each tree interconnect structure, the book is a valuable resource for researchers, engineers, and graduate students in fields of analogue, RF/microwave, digital and mixed circuit design, SI and manufacturing engineering.

Negative Group Delay Devices: From concepts to applications introduces the theoretical concept, analysis, design methodology and implementation of negative group delay (NGD). The NGD concept is a recent topic in electrical and electronic engineering research based on an unconventional function; the generation of an output signal seemingly in time-advance of the input signal. The NGD function has been exploited to develop experimental high-performance electronic devices, and novel design features of radio frequency (RF) and microwave electronic devices, such as filters, power dividers and amplifiers. Examples include the realization of non-Foster reactive elements, shortening or reducing delay lines, enhancing the efficiency of feedforward linear amplifiers, improvement of phase shifters accuracy and bandwidth, equalization of electrical interconnect effects for the microwave, digital and mixed signal integrity improvement, and minimizing beam-squint in series-fed antenna arrays. The aim of the book is to advance understanding of the NGD principle and its applications. Recent results and outcomes for the different methodologies used to elaborate the NGD function are shared in each chapter, and approaches relevant to various devices are described. This book will be of particular interest to researchers, academics and postdoctoral students interested in signal processing in electronic, radio frequency, microwave and optoelectronic devices, and particularly those investigating unconventional circuit and system design.

This book presents an innovative theory of active circuit topologies exhibiting the negative group delay (NGD) function appli. in RF/electronic engineering. The basic properties of this abnormal function are established. An analogy between the NGD behaviour and filter gain is developed. Then, several elementary cells operating as low-pass, high-pass, band-pass and stop-band circuits are identified. Then, simulation and experimental results in very good agreement with the theory are offered. Design techniques of NGD low-pass and band-pass proof of concepts respectively operating with super ultra-wide band (UWB) RF signals are described. It is demonstrated theoretically and experimentally that the NGD circuits enable to realize the propagation of limited bandwidth signals with negative time-delay and applications for pure delay cancellation. In other words, the possibility of certain signal wave forms anticipation was verified in theory, simulation and practice. The feasibility of the NDG multiband devices implementation and digital FIR/IIR circuits is presented. Novel topologies of distributed circuits potentially integrable and susceptible to operate up to tens GHz are examined.