Patent ID: 8242841
Filing Date: 2012-08-14
Classification: H03F

Abstract:
1. A receiver having a multi-stage low noise amplifier comprising: at least one antenna; a filter that receives and filters signals from the at least one antenna, the filtered signals including a first frequency band signal in a first frequency band and a second frequency band signal in a second frequency band; and a multi-stage low noise amplifier that receives the filtered signals from the filter, the multi-stage low noise amplifier including a first stage low noise amplifier that receives and performs impedance matching for the first frequency band signal and the second frequency band signal, the multi-stage low noise amplifier further including a second stage low noise amplifier that receives the first frequency band signal and the second frequency band signal, the second stage low noise amplifier including load resistors that are bypassed when the first frequency band signal is within the first frequency band and are not bypassed when the second frequency band signal is within the second frequency band based on receiving either the first frequency band signal or the second frequency band signal by the second stage low noise amplifier.