LOW-VOLTAGE TRANSCONDUCTANCE AMPLIFIER/FILTERS

摘要

Wireless communications devices must handle a wide range of useful signal levels and must also cope with large interfering signals of nearby frequencies. The y often use transconductance amplifiers/filters as building blocks as such amplifier/filters exhibit good characteristics of both amplification and filtering. The transconductance cells described make use of feedbacks which involve no signal conversions. As the result, the cells have high linearity and yet can operate at low voltage.