Title :
Signal and noise analysis in sliced model of a FET mixer
Author :
Moradi, G. ; Abdipour, A. ; Ghorbani, A. ; Farzaneh, F.
Author_Institution :
Dept. of Electr. Eng., Amirkabir Univ. of Technol., Tehran, Iran
Abstract :
This paper presents a nonlinear signal and noise analysis of a wide gate FET mixer. The study is performed using nonlinear sliced modeling. The FET is taken into account as a distributed element and divided into several smaller pieces so that in each slice a lumped model can be applied. Calculation of passive and active elements of each slice is performed using a proper scaling approach. For noise analysis, appropriate noise sources are added to the distributed circuit. The wide gate FETs have been suggested for high power, wideband and high gain devices such as the travelling wave amplifier. The nonlinear application is suggested for a novel device named a travelling wave mixer
Keywords :
circuit noise; equivalent circuits; microwave field effect transistors; microwave mixers; nonlinear network analysis; semiconductor device models; semiconductor device noise; FET mixer; FET sliced model; active elements; distributed circuit; distributed element; lumped mode; noise analysis; noise sources; nonlinear analysis; nonlinear sliced modeling; passive elements; signal analysis; travelling wave mixer; wide gate FET; Active noise reduction; Broadband amplifiers; Circuit noise; High power amplifiers; Microwave FETs; Microwave devices; Noise figure; Signal analysis; Transmission line matrix methods; Transmission lines;
Conference_Titel :
Microwave and Millimeter Wave Technology, 2000, 2nd International Conference on. ICMMT 2000
Conference_Location :
Beijing
Print_ISBN :
0-7803-5743-4
DOI :
10.1109/ICMMT.2000.895605
