A MOSFET amplifier includes a pre-amplifier stage and a power amplifier stage. The pre-amplifier is a CMOS inverter having a signal output that is DC connected to the gate of a MOS control transistor of the power amplifier stage. The CMOS inverter includes an NMOS transistor with a source connected through...http://www.google.com.hk/patents/US6725030?utm_source=gb-gplus-share專利 US6725030 - CMOS radio frequency amplifier with inverter driver
