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Analysis of parametric oscillations in high power ampliers
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نویسنده
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Nikandish G. ,Youse ,A. ,Mohammadi E. ,Babakrpour E. ,Medi A.
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منبع
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scientia iranica - 2013 - دوره : 20 - شماره : 6- D - صفحه:2048 -2092
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چکیده
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A large-signal analysis of sub-harmonic parametric oscillations in powerampliers (pas) is presented in this paper. simplied models for current-voltage andchannel charge characteristics of short-channel pseudomorphic high electron mobilitytransistors (phemts) are adopted to investigate the e ects of the device transconductanceand gate-source capacitance nonlinearities on the amplier stability. a 5-w ku-bandpa is designed to demonstrate the application of the presented analysis. mmic pa isimplemented in a 0.25-m gaas phemt process. according to the measurements, the paprovides 37.5 dbm (5.6 w) of output power, 36% of power added eciency (pae), andsmall-signal gain of 18 db on the frequency band of 12-15 ghz.
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کلیدواژه
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Large-signal instability; ,Parametric oscillation; ,pHEMT; ,Power ampliers; ,Stability analysis.
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آدرس
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sharif university of technology, M Sc degree from Sharif University of Technology,, ایران, sharif university of technology, M S degree from Sharif University of Technology,, ایران, sharif university of technology, M S degree from Sharif University of Technology, Tehran, ایران, sharif university of technology, M S degree in microelectronic circuits from Sharif University of Technology, ایران, sharif university of technology, Assistant Professor in the Electrical Engineering Department, Sharif University of Technology,, ایران
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Authors
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