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1. (AU1998072769) Method and apparatus for efficient signal power amplification

Office : Australia
Application Number: 72769/98 Application Date: 30.04.1998
Publication Number: 1998072769 Publication Date: 21.01.1999
Publication Kind : A
Prior PCT appl.: Application Number:US1998008893 ; Publication Number: Click to see the data
IPC:
H03F 3/68
H03F 1/02
H03F 3/60
H04B 1/04
H ELECTRICITY
03
BASIC ELECTRONIC CIRCUITRY
F
AMPLIFIERS
3
Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
68
Combinations of amplifiers, e.g. multi-channel amplifiers for stereophonics
H ELECTRICITY
03
BASIC ELECTRONIC CIRCUITRY
F
AMPLIFIERS
1
Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
02
Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
H ELECTRICITY
03
BASIC ELECTRONIC CIRCUITRY
F
AMPLIFIERS
3
Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
60
Amplifiers in which coupling networks have distributed constants, e.g. with waveguide resonators
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
B
TRANSMISSION
1
Details of transmission systems, not covered by a single one of groups H04B3/-H04B13/123; Details of transmission systems not characterised by the medium used for transmission
02
Transmitters
04
Circuits
CPC:
H03F 3/602
H03F 1/0294
Applicants: Motorola, Inc.
Inventors: Olson, Scott A.
Stengel, Robert E
Priority Data: 08850541 02.05.1997 US
Title: (EN) Method and apparatus for efficient signal power amplification
Abstract:
(EN) An apparatus (100) uses power recovery from a combining circuit (125) to improve efficiency. A power combiner (125) generates multiple output signals (127, 133) from a combination of input signals (113, 114). One of the output signals from the power combiner is coupled to a power recovery circuit (135), and energy is recovered and preferably stored for later use.
Also published as:
KR1020010012138EP0979551JP2001527722 CN1254453WO/1998/051007