On-chip impedance matching power amplifier and radio...

Details On-chip impedance matching power amplifier and radio... On-chip impedance matching power amplifier and radio...

2005-06-14

2005-06-14

Vo, Nguyen T. (Department: 2685)

Telecommunications

Transmitter

Power control, power supply, or bias voltage supply

C455S121000

Reexamination Certificate

active

06907231

ABSTRACT:
An on-chip impedance matching includes a transistor, an inductor, and a capacitive divider. The gate of the transistor is operably coupled to receive input signals; the source of the transistor is coupled to a first DC voltage potential; and the drain of the transistor is operably coupled to the inductor. The other end of the inductor is operably coupled to a second DC voltage potential. The capacitive divider includes matched capacitors that, in combination with the inductor, provide for substantially lossless on-chip impedance matching, where a tap of the capacitive divider provides an output of the on-chip impedance matching power amplifier. In addition, the capacitance of the capacitive divider and the inductance of the inductor are tuned to provide a tank circuit for the on-chip impedance matching power amplifier.

REFERENCES:
patent: 2002/0070802 (2002-06-01), Kim
patent: 2002/0177417 (2002-11-01), Visser

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