Title :
Non-Linear Characterization and Simulation of a Travelling Wave Amplifier
Author :
Walthes, Wolfgang ; Berroth, Manfred
Author_Institution :
Member IEEE, Infineon Technologies AG, COM HSC D IN, D-81106 Munich. wolfgang.walthes@infineon.com, Tel.: +49 89 234 84321, Fax: +49 89 234 723077
Abstract :
A large-signal characterization for a travelling wave amplifier (TWA) is presented based on measurements with a non-linear vector network analyzer. The TWA is a four stage CPW design fabricated in a 0.15 ¿m GaAs HEMT process. The measurement results are compared with simulations in the frequency domain and in the power domain up to the fifth harmonic. Over all a good agreement has been achieved. The model for the transistors, implemented as user-defined model in Agilent ADS, is suitable for large signal designs, especially for high output voltage swings required for drivers of optical modulators.
Keywords :
Coplanar waveguides; Frequency domain analysis; Frequency measurement; Gallium arsenide; HEMTs; Optical amplifiers; Optical modulation; Power measurement; Power system harmonics; Signal design;
Conference_Titel :
Microwave Conference, 2001. 31st European
Conference_Location :
London, England
DOI :
10.1109/EUMA.2001.338970
