Conformal mapping of S-parameters of a three-terminal network from its feedback impedance admittance

Author

Li, Yun ; Feng, Shichang ; Luo, Yashua

Author_Institution

Dept. of Electron. Eng., Univ. of Electron. Sci. & Technol. of China, Chungdu, China

fYear

1989

Firstpage

545

Abstract

Feedback in high-frequency networks always takes the form of simple series and/or shunt applied to a single stage. Application of feedback changes the scattering parameters of the network considerably. A mapping relationship for the S-parameters directly from the feedback impedance and admittance is presented. This is a conformal Mobius transformation and, on a Smith chart, maps disks of impedance or admittance to disks of the new S-parameters

Keywords

S-parameters; electric admittance; electric impedance; feedback; multiterminal networks; network analysis; network synthesis; S-parameters; Smith chart; conformal Mobius transformation; conformal mapping; disc mapping; feedback admittance; feedback changes; feedback impedance; high-frequency networks; scattering parameters; series feedback; shunt feedback; single stage; three-terminal network; Admittance; Conformal mapping; Design methodology; Feedback circuits; Impedance; Industrial electronics; Microwave FETs; Microwave devices; Microwave transistors; Scattering parameters;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 1989., IEEE International Symposium on

Conference_Location

Portland, OR

Type

conf

DOI

10.1109/ISCAS.1989.100410

Filename

100410