Title :
Nonlinear stability analysis of a ultra-wide band doubler MMIC
Author :
Liu, Yu ; Yang, Tao ; Yang, Ziqiang
Author_Institution :
Microwave Center, Univ. of Electron. Sci. & Technol. of China, Chengdu, China
Abstract :
An improved nonlinear stability analysis technique for circuits is presented. This technique is mainly implemented by adding variable terminal impedances and an additional auxiliary perturbation generator into a circuit node. This method can find out the potential oscillation of nonlinear circuits under the terminal unmatched condition. The method has been applied to an ultra-wide band doubler microwave monolithic integrate circuit for detecting the autonomous oscillations of DC regime under the unmatched terminal impedance condition. The simulation is in good agreement with measurements. Finally, the paper shows the measured conversion gain under matched terminal, and the minimum gain is about -4 dB over 3-50 GHz.
Keywords :
MMIC; circuit oscillations; circuit stability; nonlinear network analysis; ultra wideband technology; autonomous oscillations; auxiliary perturbation generator; conversion gain; frequency 3 GHz to 50 GHz; nonlinear circuits; nonlinear stability analysis; potential oscillation; ultra-wide band doubler MMIC; ultra-wide band doubler microwave monolithic integrated circuit; unmatched terminal impedance condition; Circuit simulation; Circuit stability; Frequency; Impedance; Integrated circuit modeling; MMICs; Microwave circuits; Microwave theory and techniques; Nonlinear circuits; Stability analysis; MMIC; doubler; nonlinear stability; ultra-wide band;
Conference_Titel :
Communications Technology and Applications, 2009. ICCTA '09. IEEE International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-4816-6
Electronic_ISBN :
978-1-4244-4817-3
DOI :
10.1109/ICCOMTA.2009.5349105
