Title :
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
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;
Conference_Titel :
Circuits and Systems, 1989., IEEE International Symposium on
Conference_Location :
Portland, OR
DOI :
10.1109/ISCAS.1989.100410
