US 9,099,962 B2 · Systems and methods to adjust the matching conditions of an amplifier

Abstract

A system and method improve amplifier efficiency of operation relative to that of a matching circuit with fixed matching conditions. A power level representing a level of transmission power from an amplifier circuit and an indicator of amplifier circuit operation are provided. The indicator is at least one of channel, channel bandwidth, out-of band spectral requirements, spectral mask requirements, error vector magnitude, modulation rate, and modulation type. The matching conditions for a matching circuit of an amplifying transistor are adjusted based at least in part on the power level and the indication where the matching conditions are different for channels at an edge of a channel band than for channels nearer a center of the channel band.

Claims20

Dependent claims

A method comprising:

providing a power level indicating a level of transmission power from an amplifier circuit including an amplifying transistor and a matching circuit configured to match an output port of the amplifying transistor;
providing an indication of amplifier circuit operation;
and
adjusting matching characteristics of the matching circuit dependent upon the power level and the indication of amplifier circuit operation, the matching characteristics of the matching circuit being different for channels at an edge of a channel band than for channels nearer a center of the channel band.

1 more element

Dependencies are inferred from the claim text.

Facts

Application

14/192,721Filed 27 Feb 2014 · division

Priority

27 Aug 2009

Published

US 2014/0176243 A126 Jun 2014

Granted

4 Aug 2015

Term ends

Not estimatedThe source records don’t support an estimate.

Classification19 codes

H03G 3/3042
In high-frequency amplifiers or in frequency-changers: in modulators, frequency-changers, transmitters or power amplifiers
H03F 1/0205
Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation: in transistor amplifiers
H03F 1/0261
In transistor amplifiers: with control of the polarisation voltage or current, e.g. gliding Class A
H03F 1/56
Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements: modifications of…

Family

Application12/549,014Parent of this division · filed 27 Aug 2009

Application13/778,677Parent of this division · filed 27 Feb 2013

US 8,391,812 B2Parent of this division · filed 5 Mar 2013

US 2014/0176243 A1Pre-grant publication · published 26 Jun 2014

US 8,706,064 B2Parent of this division

US 2011/0050347 A1Published application

US 2013/0181779 A1Published application

US 9,099,962 B2This patent

From the US filing history. Foreign family members aren’t listed.

Systems and methods to adjust the matching conditions of an amplifier

Life of this patent

Systems and methods to adjust the matching conditions of an amplifier

Life of this patent

Abstract

Claims20