Meta-Smith Charts and Their Potential Applications

Abstract

Synthesis Lectures on Antennas will publish 50-to 100-page publications on topics that include both classic and advanced antenna configurations. Each lecture covers, for that topic, the fundamental principles in a unified manner, develops underlying concepts needed for sequential material, and progresses to the more advanced designs. State-of-the-art advances made in antennas are also included. Computer software, when appropriate and available, is included for computation, visualization and design. The authors selected to write the lectures are leading experts on the subject who have extensive background in the theory, design and measurement of antenna characteristics. The series is designed to meet the demands of 21st century technology and its advancements on antenna analysis, design and measurements for engineers, scientists, technologists and engineering managers in the fields of wireless communication, radiation, propagation, communication, navigation, radar, RF systems, remote sensing, and radio astronomy who require a better understanding of the underlying concepts, designs, advancements and applications of antennas.

Theoretical Study of Microwave Transistor Amplifier Design in the Conjugately Characteristic-Impedance Transmission Line (Ccitl) System Using a Bilinear Transformation Approach

“…In this paper, only nonnegative characteristic resistances (NNCRs) are considered; i.e., the argument φ must lie in the following range [24]:…”

“…Analytical approaches for solving problems associated with CCITLs usually provide complex formulae [24]. To assist in the analysis and design of CCITLs, graphical tools can be useful.…”

“…They are constructed using the same approach as in constructing the Smith chart. For the Meta-Smith chart for CCITLs with NNCRs, the region of interest is always inside or on the unit circle in the Γ-plane for passive load terminations [24]. It has been found that this Meta-Smith chart depends in a complicated fashion on the argument φ defined in (3).…”

“…Recently, Torrungrueng and Thimaporn have proposed a novel graphical tool, called the Meta-Smith charts (previously known as the T-charts) [7], to analyze potential applications in the CCITL system [7,9,23,24]. Note that Meta-Smith charts are a generalization of the Smith chart for CCITLs.…”

“…Note that Meta-Smith charts are a generalization of the Smith chart for CCITLs. For matching networks, Meta-Smith charts can be applied in several fashions, such as lump element tuning, single stub tuning, and double stub tuning [24]. However, in order to incorporate component parameters that are typically in the Z 0 system into the CCITL system, a rigorous mathematical derivation is necessary, for example, the derivation of S-parameter and power gain conversions.…”