Substrate-Voltage Modulation of Currents in Symmetric SOI Lateral Bipolar Transistors

The modulation of the currents in a symmetric Semiconductor-on-Insulator (SOI) lateral bipolar transistor with a voltage applied to the SOI substrate is studied. For an n-p-n transistor, a positive substrate bias could greatly increase the collector current, especially at low VBE values, while having relatively little effect on the base current. Similarly, a negative substrate bias could greatly i...