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1. US20130278333 - Optimizing cascade gain stages in a communication system

Office
United States of America
Application Number 13449956
Application Date 18.04.2012
Publication Number 20130278333
Publication Date 24.10.2013
Grant Number 08749312
Grant Date 10.06.2014
Publication Kind B2
IPC
H03F 3/04
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
FAMPLIFIERS
3Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
04with semiconductor devices only
CPC
H03F 3/602
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
FAMPLIFIERS
3Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
60Amplifiers in which coupling networks have distributed constants, e.g. with waveguide resonators
602Combinations of several amplifiers
H03G 3/3052
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
GCONTROL OF AMPLIFICATION
3Gain control in amplifiers or frequency changers ; without distortion of the input signal
20Automatic control
30in amplifiers having semiconductor devices
3052in bandpass amplifiers (H.F. or I.F.) or in frequency-changers used in a (super)heterodyne receiver
Applicants Corral Celestino A.
QUALCOMM Incorporated
Inventors Corral Celestino A.
Agents DeLizio Gilliam, PLLC
Title
(EN) Optimizing cascade gain stages in a communication system
Abstract
(EN)

Techniques for optimizing a cascade gain device comprising at least two gain stages are disclosed. A first noise figure associated with the first gain stage is incrementally increased by a plurality of noise figure increments determined based, at least in part, on a minimum noise figure and a maximum noise figure associated with the first gain stage. At each of the plurality of noise figure increments, at least a gain value that corresponds to the noise figure increment is calculated. One of the plurality of noise figure increments and the corresponding gain value is selected as an optimum noise figure of the first gain stage and an optimum gain value of the first gain stage respectively. Parameters of an inter-stage matching network associated with the first gain stage are configured based on the optimum noise figure and the optimum gain of the first gain stage.

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