Stability of Grid Amplifiers
نویسندگان
چکیده
We present a stability model for quasi-optical grid amplifiers. This model is useful for predicting and suppressing the common-mode oscillations that often occur in amplifier grids. Three stabilization techniques will be discussed. The first technique uses a capacitor to stabilize the grid. The second approach employs resistance to suppress the oscillations. The final technique stabilizes the grid by reducing the on-chip commonmode resistance, allowing greatly increased amplifier efficiencies. Experimental evidence will be presented to confirm the validity of our stability model.
منابع مشابه
Gain and Stability Models for HBT Grid Amplifiers - Antennas and Propagation Society International Symposium, 1995. AP-S. Digest
A 16-element heterojunction-bipolar-transistor (HBT) grid amplifier has been fabricated with a peak gain of 11 dB at 9.9 GHz with a 3-dB bandwidth of 350 MHz. Here we report a model of gain analysis for the grid and give a comparison of the measurement and theory. Measured patterns gives evidence of a common-mode oscillation. A stability model for the common-mode oscillation is developed. Based...
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تاریخ انتشار 1998