Title :
New analysis technique of transimpedance amplifiers with cascode structure: application to a DC-2.5 GHz MMIC amplifier
Author :
Cadenas, Carlos Crespo ; Martinez, F.P.
Author_Institution :
ETSI Telecomunicacion, Univ. Politecnica de Madrid, Spain
Abstract :
This paper describes the technique we have employed in the analysis of the cascode structure with resistive feedback used as a transimpedance amplifier and shows a new closed form expression for its frequency response based on the equivalent circuit parameters of the FETs. The predicted transimpedance magnitude, -3 dB bandwidth and ripple are in good agreement with previous simulations. We used this technique for the realization of a DC to 2.5 GHz MMIC amplifier with a transimpedance of 67 dBΩ and a good noise performance
Keywords :
MESFET integrated circuits; MMIC amplifiers; UHF amplifiers; equivalent circuits; feedback amplifiers; frequency response; integrated circuit noise; network analysis; wideband amplifiers; 0 to 2.5 GHz; 2.5 GHz; FETs; GaAs; MMIC amplifier; analysis technique; cascode structure; equivalent circuit parameters; frequency response; resistive feedback; transimpedance amplifiers; Bandwidth; Circuit noise; Circuit simulation; Equations; Equivalent circuits; FETs; MMICs; Optical amplifiers; Optical feedback; Optical noise;
Conference_Titel :
Electrotechnical Conference, 1994. Proceedings., 7th Mediterranean
Conference_Location :
Antalya
Print_ISBN :
0-7803-1772-6
DOI :
10.1109/MELCON.1994.381016
