Enhanced bipolar transistor design for the linearization of the base-collector capacitance
2017
A frequency, bias and output power independent linearization technique for reducing the non-linear base-collector capacitance related distortion is proposed. Based on Volterra series analysis, the optimum base-collector capacitance for linear device operation is determined while respecting physical constrains. It is shown that by modifying the extrinsic base-collector region for an otherwise uncompromised device, the C bc linearity compensation can be included within the transistor design itself. The practicality of this implementation is demonstrated by considering the doping profile accuracy requirements for achieving a significant OIP3 improvement of at least 5dB.
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