Extension of the TPA method for the exact analysis of feedback circuits in terms of the return ratio

Author

Bellone, Salvatore ; Licciardo, Gian Domenico

Author_Institution

Dept. of Electr. & Inf. Eng., Univ. of Salerno, Fisciano, Italy

fYear

2011

Firstpage

1

Lastpage

4

Abstract

A novel approach to determine all the closed-loop parameters of feedback circuits as a function of the Return Ratio (RR) is presented. It allows the extension of the Two-Port method to those analysis where the knowledge of the RR is essential, as occurs for oscillator circuits analysis. The accuracy of this approach is proven by comparing the expressions obtained for the gain, loop gain, input and output impedance with exact solutions determined from Kirchhoff analysis of two well-known shunt-shunt and series-series feedback topology.

Keywords

circuit feedback; two-port networks; Kirchhoff analysis; closed-loop parameters; feedback circuit exact analysis; input impedance; loop gain; oscillator circuits analysis; output impedance; series-series feedback topology; shunt-shunt feedback topology; two-port analysis method; Accuracy; Analytical models; Feedback circuits; Integrated circuit modeling; Network topology; Resistance; Topology; analog circuits; circuit theory; closed-loop parameters; feedback;

fLanguage

English

Publisher

ieee

Conference_Titel

Environment and Electrical Engineering (EEEIC), 2011 10th International Conference on

Conference_Location

Rome

Print_ISBN

978-1-4244-8779-0

Type

conf

DOI

10.1109/EEEIC.2011.5874612

Filename

5874612