Title :
An alternative approach in deriving associated circle equations for microwave transistor amplifiers
Author :
Silapunt, R. ; Torrungrueng, D.
Author_Institution :
Dept. of Electron. & Telecommun., King Mongkut´´s Univ. of Technol. Thonburi Bangkok, Bangkok
Abstract :
The bilinear transformation is employed in deriving associated circle equations for microwave transistor amplifiers in the conjugately characteristic-impedance transmission line (CCITL) system. This approach is engaged in transforming stability, operating and available power gains, voltage standing wave ratio (VSWR), and noise circles located in the reflection-coefficient plane (Gamma-plane) in the Z0 system into the corresponding ones in the CCITL system at any argument phi, which is the argument of the CCITL characteristic impedances. Its validity is verified by comparing with result of the characteristic conductance (CC) approach. Its convenience over the CC approach is realized.
Keywords :
microwave amplifiers; microwave transistors; bilinear transformation; circle equations; conjugately characteristic-impedance transmission line; microwave transistor amplifiers; voltage standing wave ratio; Equations; Impedance; Microwave amplifiers; Microwave technology; Microwave transistors; Power transmission lines; Radiofrequency interference; Stability; Transmission line theory; Voltage;
Conference_Titel :
Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology, 2008. ECTI-CON 2008. 5th International Conference on
Conference_Location :
Krabi
Print_ISBN :
978-1-4244-2101-5
Electronic_ISBN :
978-1-4244-2102-2
DOI :
10.1109/ECTICON.2008.4600415
