Unified Expression of the Conjugate Image Impedances for Two-port Representations

• Published in: Radioengineering Vol. 31; no. 3; pp. 273 - 280
• Main Author: Minnaert, B.
• Format: Journal Article
• Language: English
• Published: Spolecnost pro radioelektronicke inzenyrstvi 01-09-2022
• Subjects: circuit theory; conjugate image; two-port networks
• ISSN: 1210-2512
• DOI: 10.13164/re.2022.0273

Conjugate image impedances are used to minimize power reflections in a variety of domains, including amplifier design, microwave engineering, wireless power transfer, antenna design and millimeter wave applications. For a two-port network, they can be described as function of different parameters including impedance, admittance, hybrid, inverse hybrid, chain, scattering and chain scattering parameters. In this work, a general unified structure for the conjugate image impedances is provided, valid for each of the two-port representations. It highlights its close relationship with the Rollett stability factor and provides insight into the structure of conjugate image impedances.