Title :
A 24.6-GHz MMIC HBT Triple-Push Oscillator
Author :
Tang, Yu-Lung ; Wang, Huei
Author_Institution :
Dept. of Electrical Engineering and Graduate Institute of Communication Engineering, National Taiwan University, Taipei, Taiwan, 10617, ROC
Abstract :
A triple-push oscillator has been implemented using MMIC approach. This 24.6-GHz MMIC HBT triple-push oscillator was fabricated using InGaP/GaAs HBT MMIC technology. The principle of a triple-push oscillator is that three identical fundamental oscillators are combined via microstrip-lines and operated in odd-mode oscillation to provide 120° phase difference among three fundamental oscillators. As a consequence, the third harmonic signals of this MMIC triple-push oscillator chip were in-phase added to provide an output signal of ¿14.8 dBm at 24.6 GHz with more than 20-dB fundamental and the second harmonic rejection.
Keywords :
Circuit optimization; Frequency measurement; Gallium arsenide; Heterojunction bipolar transistors; MMICs; Microstrip; Microwave oscillators; Millimeter wave communication; Power generation; Semiconductor device measurement;
Conference_Titel :
Microwave Conference, 2001. 31st European
Conference_Location :
London, England
DOI :
10.1109/EUMA.2001.339151
