Stability of grid amplifiers |
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Authors: | Cheh-Ming Liu MP De Lisio A Moussessian DB Rutledge |
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Affiliation: | Sci. Center, Rockwell Int. Corp., Thousand Oaks, CA, USA; |
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Abstract: | 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 common-mode resistance, allowing greatly increased amplifier efficiencies. Experimental evidence will be presented to confirm the validity of our stability model. |
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