Low noise amplifier for wireless communications

Details Low noise amplifier for wireless communications Low noise amplifier for wireless communications

2007-09-04

2007-09-04

Urban, Edward F. (Department: 2618)

Telecommunications

Receiver or analog modulated signal frequency converter

Noise or interference elimination

C455S307000, C330S131000, C330S302000

Reexamination Certificate

active

10819395

ABSTRACT:
A low noise amplifier is provided for the receiver of a wireless communications system. The amplifier incorporates an image rejection function by incorporating a notch filter formed by an inductor and capacitor connected at a node between two active elements of the amplifier. The amplifier also incorporates a gain control function by adding a further active element connected to, on one hand, a node between the inductor and capacitor and, on the other hand, a voltage supply. A gain control signal is connected to the control input of the further active element has an input connected to a feedback lead of the receiver to provide the gain control.

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