Patent ID: 7800450

Claim:
A re-configurable low noise amplifier utilizing feedback capacitors, comprising: an input transistor, having one terminal connected to a capacitor and a first inductor, for amplifying a received signal to be an amplified signal; an output portion, configured to output the amplified signal, wherein the output portion has a plurality of output transistors and each output transistor has one terminal connected to another terminal of the input transistor, and wherein said each output transistor is configured to be switched according to a frequency band of the amplified signal in a wide band of frequencies; and a capacitor feedback part, having a capacitance distributor arranged at a gate electrode of the input transistor and connected to another terminal of said each output transistor, wherein the capacitance distributor is configured to adjust a gain and configured for input matching by feeding the output impedance of the re-configurable low noise amplifier back to the input impedance of the re-configurable low noise amplifier.