METHOD AND SYSTEM FOR AMPLIFYING A SIGNAL USING A TRANSFORMER MATCHED TRANSISTOR

摘要

A power amplifier includes a transistor (230), a transmission line transformer, (210) and a capacitor (220). The transistor (230) is operable to receive a signal and to generate an amplified signal. The transistor (230) has a source (36), a drain (34) and a gate (32). The gate (32) has a first impedance and is operable to receive to receive the signal to be amplified. The transmission line transformer (210) has a first (216), second (218), third, (214) and fourth port (212), the first port (216)being coupled to the gate (132) of the transistor (230) and the third port, (214) and the fourth port (212) being coupled to a signal source device (110) having a second impedance. The capacitor (220) has a first end (222) and a second end (224). The first end (222) of the capacitor (220) is coupled to the second port (218) of the transmission line transformer (210) and the second end (224) is coupled to a ground (240).